Fibromyalgia syndrome affects an estimated 10 million people in the U.S. Around 75 to 90 percent of the people who have fibromyalgia are women, who are affected physically, mentally and socially. It is not a disease, but a syndrome - a collection of signs, symptoms, and medical issues that usually occur together, but are not related to one identifiable cause. Severe fibromyalgia can be debilitating as it interferes with basic activities of everyday life.
Often women in menopause confuse the many symptoms of hormone imbalance with those of conditions like fibromyalgia or even chronic fatigue. But the good news is that women with fibromyalgia who are taking the Wiley Protocol bioidentical hormone replacement therapy are finding relief.
Fibromyalgia is often seen in families, among siblings, or mothers and their children. Diagnosis is usually made between the ages of 20 to 50 years, but the incidence rises with age so that by age 80, approximately 8 percent of adults meet the American College of Rheumatology classification of fibromyalgia.
Fibromyalgia is characterized by chronic widespread pain, abnormal pain processing, multiple tender points, fatigue, psychological distress and sleep disturbances. Whereas hormone imbalance symptoms are primarily caused by the incorrect relationship between progesterone and estrogen levels in the body, and can have a dramatic effect on health, resulting in a number of the symptoms of hormone imbalance that are similar to those of fibromyalgia.
The primary symptom of fibromyalgia is chronic widespread body pain, and most people with fibromyalgia also experience sleep disturbances, moderate to extreme fatigue, cognitive difficulties, and sensitivity to touch, light, or sound. Many individuals also experience a number of other symptoms and overlapping conditions, such as lupus, arthritis and irritable bowel syndrome. Symptoms also include poor stamina and profound exhaustion. However it is important to note that fibromyalgia symptoms may vary widely from one person to the next.
T.S. Wiley says, “It’s actually diminishing hormones that are the cause of the classic lower back pain common in middle-age people. The backache of old age is really just a case of threadbare sciatic nerves. Scientists found that natural progesterone increased in the expression of the gene that remyelinates the nerves in the rats lower back. At the main nerve junctions of communication, like the heart and brain stem, wires start to fray when hormones levels fall off. Without estrogen to peak and cause ovulation, there’s no progesterone. Without progesterone to remyelinate nerves, peripheral nerve bundles that are farthest from the brain fray first. The biggest ones, farthest down, after the one in the base of your neck, is at your tail bone area in the lower back.”
Interestingly many of the women on bioidentical hormones have experienced relief from symptoms like insomnia, muscle aches and pains, chronic fatigue, depression, and many other typical fibromyalgia symptoms.
Once such example is from Linda, talking about her sister Kathryn, who takes the Wiley Protocol bioidentical hormones. She said, “She has recently run out and has been suffering the consequences of not having the hormones in her system. (Her fibromyalgia is acting up; she has osteopenia in all her joints – her pain levels are highly escalated when she’s not on the Wiley Protocol).”
Alternative therapies, such as massage, acupuncture, chiropractic, herbal supplements, myofasical release and even yoga, can also be effective tools in managing fibromyalgia symptoms and helping improve quality of life. But even more recently, the doctors of women taking bioidentical hormone replacement therapy, the Wiley Protcol, see relief among patients. Dr. Delmi Behr, a general surgeon in Pottstown, PA, explains how the Wiley Protocol is different from other hormone replacement therapies and how it helps even uncommon menopausal symptoms and fibromyalgia.
Sources: National Fibromyalgia Association (NFA) and the American College of Rheumatology (ACR); Sex, Lies, and Menopause
Call my office in Wilmington (815) 476-5210 or Lombard (630) 627-3700 to set up an appointment or email me at jones.gretchen@gmail.com
Saturday, February 27, 2010
Julie Taguchi, M.D. Explains LA Times Article Linking Hormones and Lung Cancer
On Sept. 20, 2009 this Los Angeles Times newspaper article by Thomas H. Maugh II prompted women to write regarding their Wiley Protocol bioidentical hormones, which are biomimetically dosed.
"This LA Times article and other media continue to report on the negative outcomes of the Women's Health Initiative (WHI) that validates the elimination the drugs with hormone-like effects," said Dr. Taguchi, an oncologist at Santa Barbara's Sansom Clinic. It was Taguchi who worked with T.S. Wiley on her book Sex, Lies and Menopause, The Shocking Truth About Hormone Replacement Therapy.
She continued, "The WHI study used Premarin and daily PREMPRO (Premarin and the progeSTIN Provera) and not bio-identical estradiol or the real hormone, progeSTERONE. Physicians will continue to lump progesterone together with progeSTINS when discussing "Hormone Replacement Thereapy" until there is definitive research on progesterone. I have been following patients on BHRT in my oncology practice for seven years and not one has developed lung cancer."
The initial Women’s Health Initiative (WHI) ten years ago was a study of more than 161,000 women which was designed to identify the benefits and risks of using hormone restoration therapy to prevent chronic diseases such as heart disease, breast cancer and osteoporosis in postmenopausal women.
Many people, including doctors, still do not realize that the results of WHI Study dealt with only women over 65 who were taking only synthetic hormone replacement therapy which consisted of the drugs PremPro and Premarin only. The study was ended mid-stream in 2002 when WHI investigators found that the risks of this approach using synthetic therapy exceeded the safety limits established at the beginning of the study. They never looked at compounded bio-identical hormones in static doses because they are prescribed and dosed too many different ways. This is yet another reason why T.S. Wiley has standardized the Wiley Protocol.
"This LA Times article and other media continue to report on the negative outcomes of the Women's Health Initiative (WHI) that validates the elimination the drugs with hormone-like effects," said Dr. Taguchi, an oncologist at Santa Barbara's Sansom Clinic. It was Taguchi who worked with T.S. Wiley on her book Sex, Lies and Menopause, The Shocking Truth About Hormone Replacement Therapy.
She continued, "The WHI study used Premarin and daily PREMPRO (Premarin and the progeSTIN Provera) and not bio-identical estradiol or the real hormone, progeSTERONE. Physicians will continue to lump progesterone together with progeSTINS when discussing "Hormone Replacement Thereapy" until there is definitive research on progesterone. I have been following patients on BHRT in my oncology practice for seven years and not one has developed lung cancer."
The initial Women’s Health Initiative (WHI) ten years ago was a study of more than 161,000 women which was designed to identify the benefits and risks of using hormone restoration therapy to prevent chronic diseases such as heart disease, breast cancer and osteoporosis in postmenopausal women.
Many people, including doctors, still do not realize that the results of WHI Study dealt with only women over 65 who were taking only synthetic hormone replacement therapy which consisted of the drugs PremPro and Premarin only. The study was ended mid-stream in 2002 when WHI investigators found that the risks of this approach using synthetic therapy exceeded the safety limits established at the beginning of the study. They never looked at compounded bio-identical hormones in static doses because they are prescribed and dosed too many different ways. This is yet another reason why T.S. Wiley has standardized the Wiley Protocol.
American Cancer Society Says Benefits of Early Detection Often Overstated
The chief medical officer for the American Cancer Society now says that the benefits of early detection are often overstated. The article, "Benefits and Risks of Cancer Screening Are Not Always Clear, Experts Say"
by Tara Parker-Pope for the New York Times, October 22, 2009 said, "You would have to screen 1000 women ages 50 and older for 10 years in order to avert one additional death from breast cancer, compared to a similar number who are not screened." Other highlights included ...
"In the case of prostate cancer, for every 100 men with diagnoses, as many as 70 have cancers that if left untreated would never have harmed them."
"...the chief medical officer for the American Cancer Society now says that the benefits of early detection are often overstated."
The cancer society says it will continue to revise its public messages about cancer screening as new information becomes available.
Author T.S. Wiley (Lights Out and Sex, Lies, and Menopause) has been saying this for years based on her extensive research, and many of the doctors attending her Two Days Back on Earth environmental endocrinology seminars agree. Quoting from her book, in Chapter 5, p. 97," she stated, "As researchers and journalists, we looked back 150 years at the numbers. The statistics Rose Kushner unearthed also proved that early detection is worthless because breast cancer, statistically, kills half of all women diagnosed with it within five to ten years after diagnosis, no matter how early it’s detected. The statistics have never changed. If women never experienced the hormonal fall-off known as menopause, these cancers might never develop.”
by Tara Parker-Pope for the New York Times, October 22, 2009 said, "You would have to screen 1000 women ages 50 and older for 10 years in order to avert one additional death from breast cancer, compared to a similar number who are not screened." Other highlights included ...
"In the case of prostate cancer, for every 100 men with diagnoses, as many as 70 have cancers that if left untreated would never have harmed them."
"...the chief medical officer for the American Cancer Society now says that the benefits of early detection are often overstated."
The cancer society says it will continue to revise its public messages about cancer screening as new information becomes available.
Author T.S. Wiley (Lights Out and Sex, Lies, and Menopause) has been saying this for years based on her extensive research, and many of the doctors attending her Two Days Back on Earth environmental endocrinology seminars agree. Quoting from her book, in Chapter 5, p. 97," she stated, "As researchers and journalists, we looked back 150 years at the numbers. The statistics Rose Kushner unearthed also proved that early detection is worthless because breast cancer, statistically, kills half of all women diagnosed with it within five to ten years after diagnosis, no matter how early it’s detected. The statistics have never changed. If women never experienced the hormonal fall-off known as menopause, these cancers might never develop.”
Premarin: What are Synthetic Hormones?
In the 70's, when Provera was invented, Premarin, the "Prem" in Prempro, was prescribed alone. This low-dose chronic horse estrogen caused uterin cancer by fostering an overgrowth of the lining of the uterous. Originally, a doctor aiming to replace hormones only prescribed estrogen replacement therapy (ERT). But once the epidemic increase of uterine cancer was identified, instead of pulling Premarin from the shelves, Upjohn, the original maker of MPA, invented another drug out of natural progesterone.
The molecule of natural progesterone found in a compound called genistein in plants was chemically altered into a patentable drug that has been proven to have life-threatening side effects like heart disease, breast cancer, stroke, and dementia. The two drugs were eventually packaged together and remarketed as PremPro to prevent the horse estrogen from causing uterine cancer, and increase the market share to women with uteruses.
However, unlike real progesterone, which has a rhythmic, cyclical presence in your body two weeks out of every month, if you take Prempro, you recieve Provera every day. In actuality this combination of horse estrogen and fake progesterone can't ever recreate a normal cycle, so although it's marketed as HRT, it's not. It's not really hormone replacement for two reasons: 1) because it's a drug, and 2) because it's prescribed in a static dose, which has no resemblance to what used to go on hormonally in your body when you were in your prime.
In the end, the static, chronic dose of a progestin like Provera in a combination dose with an animal-source estrogen like Premarin blocks the horse estrogen's effect every day. So any benefits known to result in heart, brain, and breast from estrogen are lost or diminished. Even though this combination drug can cause breast cancer, heart disease, and dimentia, it's still widely available to women all over the world
The molecule of natural progesterone found in a compound called genistein in plants was chemically altered into a patentable drug that has been proven to have life-threatening side effects like heart disease, breast cancer, stroke, and dementia. The two drugs were eventually packaged together and remarketed as PremPro to prevent the horse estrogen from causing uterine cancer, and increase the market share to women with uteruses.
However, unlike real progesterone, which has a rhythmic, cyclical presence in your body two weeks out of every month, if you take Prempro, you recieve Provera every day. In actuality this combination of horse estrogen and fake progesterone can't ever recreate a normal cycle, so although it's marketed as HRT, it's not. It's not really hormone replacement for two reasons: 1) because it's a drug, and 2) because it's prescribed in a static dose, which has no resemblance to what used to go on hormonally in your body when you were in your prime.
In the end, the static, chronic dose of a progestin like Provera in a combination dose with an animal-source estrogen like Premarin blocks the horse estrogen's effect every day. So any benefits known to result in heart, brain, and breast from estrogen are lost or diminished. Even though this combination drug can cause breast cancer, heart disease, and dimentia, it's still widely available to women all over the world
Wiley Protocol for Men™ – Biomimetic DHEA and Testosterone Restoration
When a man gets older, he often notices a decline in his competitive interests, sex drive and overall enthusiasm for life. Many men experience androgen and testosterone deficiency that goes unrecognized. A man's testosterone levels begin to decline from the age of about twenty five and continue to decline until death.
Testosterone is an androgenic, or male orientated, hormone produced in the testicles with a masculinising influence in the development of puberty, as well as associated secondary sexual characteristics such as the change of his voice, a beard, aggression and sexual libido, or sexual appetite. In health it circulates at high concentration in the blood of males from puberty onwards.
In men four hormones significantly decrease with age: testosterone, estradiol, (DHEA)/ DHEA sulfate (DHEA-S), and growth hormone (GH). There are a number of men that have a gradual decline in testosterone levels and have no decline in their sexual performance, however, this is not the case for others whose hormonal decline has very negative effects such as loss of muscle mass, depression, lack of energy, libido, and more.
A multi-year study shows mean total testosterone levels down 30 percent in men ages between 25 and 75 and mean free-testosterone decreased 50 percent.
The Wiley Protocol™ for Men restores lust, sleep, muscle mass, and bone health, and helps to reduce depression.
Research has shown that restoring androgens to optimum levels can provide significant improvement in mood, increased energy and sexual function. Restoring the body's normal balance of hormones can make a man feel strong, healthy, happy and energized.
The Wiley Protocol for Men is based on the premise employed in the original Wiley Protocol (28WP) biomimetic hormone restoration therapy (BHRT), the Wiley Protocol for Men replicates additional hormone rhythms. As with the original Wiley Protocols, we recognize that the body’s rhythms work in tandem with nature.
Testosterone is an androgenic, or male orientated, hormone produced in the testicles with a masculinising influence in the development of puberty, as well as associated secondary sexual characteristics such as the change of his voice, a beard, aggression and sexual libido, or sexual appetite. In health it circulates at high concentration in the blood of males from puberty onwards.
In men four hormones significantly decrease with age: testosterone, estradiol, (DHEA)/ DHEA sulfate (DHEA-S), and growth hormone (GH). There are a number of men that have a gradual decline in testosterone levels and have no decline in their sexual performance, however, this is not the case for others whose hormonal decline has very negative effects such as loss of muscle mass, depression, lack of energy, libido, and more.
A multi-year study shows mean total testosterone levels down 30 percent in men ages between 25 and 75 and mean free-testosterone decreased 50 percent.
The Wiley Protocol™ for Men restores lust, sleep, muscle mass, and bone health, and helps to reduce depression.
Research has shown that restoring androgens to optimum levels can provide significant improvement in mood, increased energy and sexual function. Restoring the body's normal balance of hormones can make a man feel strong, healthy, happy and energized.
The Wiley Protocol for Men is based on the premise employed in the original Wiley Protocol (28WP) biomimetic hormone restoration therapy (BHRT), the Wiley Protocol for Men replicates additional hormone rhythms. As with the original Wiley Protocols, we recognize that the body’s rhythms work in tandem with nature.
Transdermal Hormones and the Pulsatility of Hormones in the Body
Any endocrinologist worth his salt knows that hormones are not chronically pouring into your system. Hormones, all hormones, have a pulsatility and amplitude. That means that hormones have a "beat" like music or your heart. Think of a single drumbeat - boom, boom, boom - or your pulse. That's pulsitility. Now hear it go faster and louder - boom, boom, boom, boom. That's amplitude. In the same way your heart can "race" depending on the needs of your system and the environmental cues to which it's responding.
Transdermal hormones can deposit through your skin into your fat base below, where it will sit, waiting to seep into your bloodstream. With every pulse of your heartbeat, your resting baseline of estrogen or progesterone seeps through capillaries into the blood rushing by.
When you are under stress and your heart beats faster, the amplitude of hormone release is faster, too. The system of delivery of hormone to your bloodstream will bring you internally as close to being twenty years old as you'll ever get when putting in hormones from the outside.
The transdermal mode of delivery of physiologically more identical to the pulse and amplification of the beat of your own orchestrated hormones than any pill or patch can possibly, with their chronically low application of hormone, ever approach.
The Wiley Protocol is transdermal, and rhythmic bioidentical hormone replacement therapy.
Transdermal hormones can deposit through your skin into your fat base below, where it will sit, waiting to seep into your bloodstream. With every pulse of your heartbeat, your resting baseline of estrogen or progesterone seeps through capillaries into the blood rushing by.
When you are under stress and your heart beats faster, the amplitude of hormone release is faster, too. The system of delivery of hormone to your bloodstream will bring you internally as close to being twenty years old as you'll ever get when putting in hormones from the outside.
The transdermal mode of delivery of physiologically more identical to the pulse and amplification of the beat of your own orchestrated hormones than any pill or patch can possibly, with their chronically low application of hormone, ever approach.
The Wiley Protocol is transdermal, and rhythmic bioidentical hormone replacement therapy.
Wednesday, February 3, 2010
Dietary Supplement Fact Sheet - Vitamin D
Vitamin D
Table of Contents
Introduction
Reference Intakes
Sources of Vitamin D
Vitamin D Intakes and Status
Vitamin D Deficiency
Groups at Risk of Vitamin D Inadequacy
Vitamin D and Health
Health Risks from Excessive Vitamin D
Interactions with Medications
Vitamin D and Healthful Diets
References
Introduction
Vitamin D is a fat-soluble vitamin that is naturally present in very few foods, added to others, and available as a dietary supplement. It is also produced endogenously when ultraviolet rays from sunlight strike the skin and trigger vitamin D synthesis [1,2]. Vitamin D obtained from sun exposure, food, and supplements is biologically inert and must undergo two hydroxylations in the body for activation. The first occurs in the liver and converts vitamin D to 25-hydroxyvitamin D [25(OH)D], also known as calcidiol. The second occurs primarily in the kidney and forms the physiologically active 1,25-dihydroxyvitamin D [1,25(OH)2D], also known as calcitriol [3].
Vitamin D is essential for promoting calcium absorption in the gut and maintaining adequate serum calcium and phosphate concentrations to enable normal mineralization of bone and prevent hypocalcemic tetany. It is also needed for bone growth and bone remodeling by osteoblasts and osteoclasts [3,4,5]. Without sufficient vitamin D, bones can become thin, brittle, or misshapen. Vitamin D sufficiency prevents rickets in children and osteomalacia in adults [2,6,7]. Together with calcium, vitamin D also helps protect older adults from osteoporosis.
Vitamin D has other roles in human health, including modulation of neuromuscular and immune function and reduction of inflammation. Many genes encoding proteins that regulate cell proliferation, differentiation, and apoptosis are modulated in part by vitamin D [3,5,8,9]. Many laboratory-cultured human cells have vitamin D receptors and some convert 25(OH)D to 1,25(OH)2D [10]. It remains to be determined whether cells with vitamin D receptors in the intact human carry out this conversion.
Serum concentration of 25(OH)D is the best indicator of vitamin D status. It reflects vitamin D produced cutaneously and that obtained from food and supplements [4] and has a fairly long circulating half-life of 15 days [11]. However, serum 25(OH)D levels do not indicate the amount of vitamin D stored in other body tissues. Circulating 1,25(OH)2D is generally not a good indicator of vitamin D status because it has a short half-life of 15 hours and serum concentrations are closely regulated by parathyroid hormone, calcium, and phosphate [11]. Levels of 1,25(OH)2D do not typically decrease until vitamin D deficiency is severe [5,10].
There is considerable discussion of the serum concentrations of 25(OH)D associated with deficiency (e.g., rickets), adequacy for bone health, and optimal overall health (Table 1). A concentration of <15 nanograms per milliliter (ng/mL) (or <37.5 nanomoles per liter [nmol/L]) is generally considered inadequate; concentrations >15 ng/ml (>37.5 nmol/L) are recommended. Higher levels are proposed by some (>30 ng/ml or >75 nmol/L) as desirable for overall health and disease prevention [12], but insufficient data are available to support them [13]. Serum concentrations of 25(OH)D consistently >200 ng/ml (>500 nmol/L) are potentially toxic.
Table 1: Serum 25-Hydroxyvitamin D [25(OH)D] Concentrations and Health*ng/mL** nmol/L** Health status
<10-11 <25-27.5 Associated with vitamin D deficiency, leading to rickets in infants and children and osteomalacia in adults [4,13] <10-15 <25-37.5 Generally considered inadequate for bone and overall health in healthy individuals [4,13] ≥15 ≥37.5 Generally considered adequate for bone and overall health in healthy individuals [4] Consistently >200 Consistently >500 Considered potentially toxic, leading to hypercalcemia and hyperphosphatemia, although human data are limited. In an animal model, concentrations ≤400 ng/mL (≤1,000 nmol/L) demonstrated no toxicity [11,14].
* Serum concentrations of 25(OH)D are reported in both nanograms per milliliter (ng/mL) and nanomoles per liter (nmol/L).
** 1 ng/mL = 2.5 nmol/L
An additional complication in assessing vitamin D status is in the actual measurement of serum concentrations of 25(OH)D. Considerable variability exists among the various assays available and among laboratories that conduct the analyses [15,16,17]. This means that compared to the actual concentration of 25(OH)D in a sample of blood serum, a falsely low or falsely high value may be obtained depending on the assay or laboratory used [18]. A standard reference material for 25(OH)D became available in July 2009 that will now permit standardization of values across laboratories [19].
Reference Intakes
Intake reference values for vitamin D and other nutrients are provided in the Dietary Reference Intakes (DRIs) developed by the Food and Nutrition Board (FNB) at the Institute of Medicine of The National Academies (formerly National Academy of Sciences) [4]. DRI is the general term for a set of reference values used to plan and assess nutrient intakes of healthy people. These values, which vary by age and gender [4], include:
Recommended Dietary Allowance (RDA): average daily level of intake sufficient to meet the nutrient requirements of nearly all (97%-98%) healthy people.
Adequate Intake (AI): established when evidence is insufficient to develop an RDA and is set at a level assumed to ensure nutritional adequacy.
Tolerable Upper Intake Level (UL): maximum daily intake unlikely to cause adverse health effects [4].
The FNB established an AI for vitamin D that represents a daily intake that is sufficient to maintain bone health and normal calcium metabolism in healthy people. AIs for vitamin D are listed in both micrograms (mcg) and International Units (IUs); the biological activity of 1 mcg is equal to 40 IU (Table 2). The AIs for vitamin D are based on the assumption that the vitamin is not synthesized by exposure to sunlight [4].
Table 2: Adequate Intakes (AIs) for Vitamin D [4]Age Children Men Women Pregnancy Lactation
Birth to 13 years 5 mcg
(200 IU)
14-18 years 5 mcg
(200 IU) 5 mcg
(200 IU) 5 mcg
(200 IU) 5 mcg
(200 IU)
19-50 years 5 mcg
(200 IU) 5 mcg
(200 IU) 5 mcg
(200 IU) 5 mcg
(200 IU)
51-70 years 10 mcg
(400 IU) 10 mcg
(400 IU)
71+ years 15 mcg
(600 IU) 15 mcg
(600 IU)
In 2008, the American Academy of Pediatrics (AAP) issued recommended intakes for vitamin D that exceed those of FNB [20]. The AAP recommendations are based on evidence from more recent clinical trials and the history of safe use of 400 IU/day of vitamin D in pediatric and adolescent populations. AAP recommends that exclusively and partially breastfed infants receive supplements of 400 IU/day of vitamin D shortly after birth and continue to receive these supplements until they are weaned and consume ≥1,000 mL/day of vitamin D-fortified formula or whole milk [20]. (All formulas sold in the United States provide ≥400 IU vitamin D3 per liter, and the majority of vitamin D-only and multivitamin liquid supplements provide 400 IU per serving.) Similarly, all non-breastfed infants ingesting <1,000 mL/day of vitamin D-fortified formula or milk should receive a vitamin D supplement of 400 IU/day. AAP also recommends that older children and adolescents who do not obtain 400 IU/day through vitamin D-fortified milk and foods should take a 400 IU vitamin D supplement daily [20]. The FNB established an expert committee in 2008 to review the DRIs for vitamin D (and calcium). The current DRIs for this nutrient were established in 1997, and since that time substantial new research has been published to justify a reevaluation of adequate vitamin D intakes for healthy populations. Determinations of DRIs are based on indicators of adequacy or hazard; dose-response curves; health outcomes; life-stage groups; and relations between intakes, biomarkers, and outcomes. For vitamin D, the FNB committee will focus on (1) effects of circulating concentrations of 25(OH)D on health outcomes, (2) effects of vitamin D intakes on circulating 25(OH)D and on health outcomes, and (3) levels of intake associated with adverse effects [21]. The FNB expects to issue its report, updating as appropriate the DRIs for vitamin D and calcium, by May 2010 [22]. Sources of Vitamin D Food Very few foods in nature contain vitamin D. The flesh of fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources [4]. Small amounts of vitamin D are found in beef liver, cheese, and egg yolks. Vitamin D in these foods is primarily in the form of vitamin D3 (cholecalciferol) and its metabolite 25(OH)D3 [23]. Some mushrooms provide vitamin D2 (ergocalciferol) in variable amounts [24-26]. Mushrooms with enhanced levels of vitamin D2 from being exposed to ultraviolet light under controlled conditions are also available. Fortified foods provide most of the vitamin D in the American diet [4,26]. For example, almost all of the U.S. milk supply is fortified with 100 IU/cup of vitamin D (25% of the Daily Value or 50% of the AI level for ages 14-50 years). In the 1930s, a milk fortification program was implemented in the United States to combat rickets, then a major public health problem. This program virtually eliminated the disorder at that time [4,14]. Other dairy products made from milk, such as cheese and ice cream, are generally not fortified. Ready-to-eat breakfast cereals often contain added vitamin D, as do some brands of orange juice, yogurt, and margarine. In the United States, foods allowed to be fortified with vitamin D include cereal flours and related products, milk and products made from milk, and calcium-fortified fruit juices and drinks [27]. Maximum levels of added vitamin D are specified by law. Several food sources of vitamin D are listed in Table 3. Table 3: Selected Food Sources of Vitamin D [30]Food IUs per serving* Percent DV** Cod liver oil, 1 tablespoon 1,360 340 Salmon (sockeye), cooked, 3 ounces 794 199 Mushrooms that have been exposed to ultraviolet light to increase vitamin D, 3 ounces (not yet commonly available) 400 100 Mackerel, cooked, 3 ounces 388 97 Tuna fish, canned in water, drained, 3 ounces 154 39 Milk, nonfat, reduced fat, and whole, vitamin D-fortified, 1 cup 115-124 29-31 Orange juice fortified with vitamin D, 1 cup (check product labels, as amount of added vitamin D varies) 100 25 Yogurt, fortified with 20% of the DV for vitamin D, 6 ounces (more heavily fortified yogurts provide more of the DV) 80 20 Margarine, fortified, 1 tablespoon 60 15 Sardines, canned in oil, drained, 2 sardines 46 12 Liver, beef, cooked, 3.5 ounces 46 12 Ready-to-eat cereal, fortified with 10% of the DV for vitamin D, 0.75-1 cup (more heavily fortified cereals might provide more of the DV) 40 10 Egg, 1 whole (vitamin D is found in yolk) 25 6 Cheese, Swiss, 1 ounce 6 2 *IUs = International Units. **DV = Daily Value. DVs were developed by the U.S. Food and Drug Administration to help consumers compare the nutrient contents of products within the context of a total diet. The DV for vitamin D is 400 IU for adults and children age 4 and older. Food labels, however, are not required to list vitamin D content unless a food has been fortified with this nutrient. Foods providing 20% or more of the DV are considered to be high sources of a nutrient. The U.S. Department of Agriculture's Nutrient Database Web site, http://www.nal.usda.gov/fnic/foodcomp/search, lists the nutrient content of many foods and provides a list of foods containing vitamin D: http://www.ars.usda.gov/SP2UserFiles/Place/12354500/Data/SR22/nutrlist/sr22a324.pdf. A growing number of foods are being analyzed for vitamin D content. Simpler and faster methods to measure vitamin D in foods are needed, as are food standard reference materials with certified values for vitamin D to ensure accurate measurements [31]. Sun exposure Most people meet their vitamin D needs through exposure to sunlight [5,31]. Ultraviolet (UV) B radiation with a wavelength of 290-315 nanometers penetrates uncovered skin and converts cutaneous 7-dehydrocholesterol to previtamin D3, which in turn becomes vitamin D3 [9,32,33]. Season, geographic latitude, time of day, cloud cover, smog, skin melanin content, and sunscreen are among the factors that affect UV radiation exposure and vitamin D synthesis [33]. The UV energy above 42 degrees north latitude (a line approximately between the northern border of California and Boston) is insufficient for cutaneous vitamin D synthesis from November through February [5]; in far northern latitudes, this reduced intensity lasts for up to 6 months. In the United States, latitudes below 34 degrees north (a line between Los Angeles and Columbia, South Carolina) allow for cutaneous production of vitamin D throughout the year [27]. Complete cloud cover reduces UV energy by 50%; shade (including that produced by severe pollution) reduces it by 60% [34]. UVB radiation does not penetrate glass, so exposure to sunshine indoors through a window does not produce vitamin D [35]. Sunscreens with a sun protection factor of 8 or more appear to block vitamin D-producing UV rays, although in practice people generally do not apply sufficient amounts, cover all sun-exposed skin, or reapply sunscreen regularly [36]. Skin likely synthesizes some vitamin D even when it is protected by sunscreen as typically applied. The factors that affect UV radiation exposure and research to date on the amount of sun exposure needed to maintain adequate vitamin D levels make it difficult to provide general guidelines. It has been suggested by some vitamin D researchers, for example, that approximately 5-30 minutes of sun exposure between 10 AM and 3 PM at least twice a week to the face, arms, legs, or back without sunscreen usually lead to sufficient vitamin D synthesis and that the moderate use of commercial tanning beds that emit 2%-6% UVB radiation is also effective [10,33]. Individuals with limited sun exposure need to include good sources of vitamin D in their diet or take a supplement. Despite the importance of the sun to vitamin D synthesis, it is prudent to limit exposure of skin to sunlight [36] and UV radiation from tanning beds [37]. UV radiation is a carcinogen responsible for most of the estimated 1.5 million skin cancers and the 8,000 deaths due to metastatic melanoma that occur annually in the United States [36]. Lifetime cumulative UV damage to skin is also largely responsible for some age-associated dryness and other cosmetic changes. It is not known whether a desirable level of regular sun exposure exists that imposes no (or minimal) risk of skin cancer over time. The American Academy of Dermatology advises that photoprotective measures be taken, including the use of sunscreen, whenever one is exposed to the sun [38]. Dietary supplements In supplements and fortified foods, vitamin D is available in two forms, D2 (ergocalciferol) and D3 (cholecalciferol). Vitamin D2 is manufactured by the UV irradiation of ergosterol in yeast, and vitamin D3 is manufactured by the irradiation of 7-dehydrocholesterol from lanolin and the chemical conversion of cholesterol [10]. The two forms have traditionally been regarded as equivalent based on their ability to cure rickets, but evidence has been offered that they are metabolized differently. Vitamin D3 could be more than three times as effective as vitamin D2 in raising serum 25(OH)D concentrations and maintaining those levels for a longer time, and its metabolites have superior affinity for vitamin D-binding proteins in plasma [5,39,40]. Because metabolite receptor affinity is not a functional assessment, as the earlier results for the healing of rickets were, further research is needed on the comparative physiological effects of both forms. Many supplements are being reformulated to contain vitamin D3 instead of vitamin D2 [40]. Both forms (as well as vitamin D in foods and from cutaneous synthesis) effectively raise serum 25(OH)D levels [5]. Vitamin D Intakes and Status In 1988-1994, as part of the third National Health and Nutrition Examination Survey (NHANES III), the frequency of use of some vitamin D-containing foods and supplements was examined in 1,546 non-Hispanic African American women and 1,426 non-Hispanic white women of reproductive age (15-49 years) [41]. In both groups, 25(OH)D levels were higher in the fall (after a summer of sun exposure) and when milk or fortified cereals were consumed more than three times per week. The prevalence of serum concentrations of 25(OH)D ≤15 ng/mL (≤37.5 nmol/L) was 10 times greater for the African American women (42.2%) than for the white women (4.2%). The 2000-2004 NHANES provides the most recent data on the vitamin D nutritional status of the U.S. population. Generally, younger people had higher serum 25(OH)D levels than older people, males had higher levels than females, and non-Hispanic whites had higher levels than Mexican Americans, who in turn had higher levels than non-Hispanic blacks. Depending on the population group, 1%-9% had serum 25(OH)D levels <11 ng/mL (<27.5 nmol/L), 8%-36% had levels <20 ng/mL (<50 nmol/L), and the majority (50%-78%) had levels <30 ng/mL (<75 nmol/L) [42]. In NHANES 2000-2004, age-adjusted mean serum 25(OH)D concentrations were 2-8 ng/mL (5–20 nmol/L) lower compared to NHANES III [43]. However, after adjustment for assay shifts, age-adjusted means in NHANES 2000–2004 remained significantly lower (by 2.0-3.6 ng/mL (5–9 nmol/L)) in most males, but not in most females. In a study subsample, adjustment for the confounding effects of assay differences changed mean serum 25(OH)D concentrations by ~4 ng/mL (~10 nmol/L), and adjustment for changes in the factors likely related to real changes in vitamin D status (such as body mass index (BMI), milk intake, and sun protection) changed mean serum 25(OH)D concentrations by 0.4-0.64 ng/mL (1.0-1.6 nmol/L). Subsequent to this report, another investigator [44] evaluated vitamin D levels measured in NHANES 2001-2004 compared to NHANES III and reported a marked decline, leading some to suggest that the majority of children and adults in the United States (and almost all African Americans and Mexican Americans) are vitamin D insufficient. However, this analysis exaggerates the temporal and demographic trends in vitamin D status because it uses a higher than usual cutoff to characterize vitamin D insufficiency, does not separate the independent effects of season and latitude in data and, most seriously, fails to compensate for a change in the 25(OH)D measurement assay used between both sets of NHANES surveys [45]. Over time, mean serum 25(OH)D concentrations in the United States have declined, but only modestly, when compensating for the assay change [43]. The real decline (~2.0-3.6 ng/mL (~5-9 nmol/L)) is likely due to simultaneous increases in BMI, reduced milk intake, and greater use of sun protection in the U.S. population. According to NHANES data from 2005-2006, only 29% of adult men and 17% of adult women (ages 19 and older) had intakes of vitamin D from food alone that exceeded their AIs. Overall in the U.S. population, only about one-third of individuals 1 year of age and older had vitamin D intakes from food exceeding their respective AIs [46]. However, dietary supplements as well as foods contribute vitamin D, so both sources must be included to obtain a true picture of total intakes. In 2005-2006, 37% of people in the United States reported the use of a dietary supplement containing vitamin D. Total intake estimates of vitamin D from both food and supplements are currently being tabulated by the Office of Dietary Supplements. Vitamin D Deficiency Nutrient deficiencies are usually the result of dietary inadequacy, impaired absorption and use, increased requirement, or increased excretion. A vitamin D deficiency can occur when usual intake is lower than recommended levels over time, exposure to sunlight is limited, the kidneys cannot convert vitamin D to its active form, or absorption of vitamin D from the digestive tract is inadequate. Vitamin D-deficient diets are associated with milk allergy, lactose intolerance, and strict vegetarianism [47]. Rickets and osteomalacia are the classical vitamin D deficiency diseases. In children, vitamin D deficiency causes rickets, a disease characterized by a failure of bone tissue to properly mineralize, resulting in soft bones and skeletal deformities [34]. Rickets was first described in the mid-17th century by British researchers [34,48]. In the late 19th and early 20th centuries, German physicians noted that consuming 1-3 teaspoons of cod liver oil per day could reverse rickets [48]. In the 1920s and prior to identification of the structure of vitamin D and its metabolites, biochemist Harry Steenbock patented a process to impart antirachitic activity to foods [27]. The process involved the addition of what turned out to be precursor forms of vitamin D followed by exposure to UV radiation. The fortification of milk with vitamin D has made rickets a rare disease in the United States. However, rickets is still reported periodically, particularly among African American infants and children [34,48]. A 2003 report from Memphis, for example, described 21 cases of rickets among infants, 20 of whom were African American [48]. Prolonged exclusive breastfeeding without the AAP-recommended vitamin D supplementation is a significant cause of rickets, particularly in dark-skinned infants breastfed by mothers who are not vitamin D replete [6]. Additional causes of rickets include extensive use of sunscreens and placement of children in daycare programs, where they often have less outdoor activity and sun exposure [34,48]. Rickets is also more prevalent among immigrants from Asia, Africa, and the Middle East, possibly because of genetic differences in vitamin D metabolism and behavioral differences that lead to less sun exposure [34]. In adults, vitamin D deficiency can lead to osteomalacia, resulting in weak muscles and bones [6,7,11]. Symptoms of bone pain and muscle weakness can indicate inadequate vitamin D levels, but such symptoms can be subtle and go undetected in the initial stages. Groups at Risk of Vitamin D Inadequacy Obtaining sufficient vitamin D from natural food sources alone can be difficult. For many people, consuming vitamin D-fortified foods and being exposed to sunlight are essential for maintaining a healthy vitamin D status. In some groups, dietary supplements might be required to meet the daily need for vitamin D. Breastfed infants Vitamin D requirements cannot be met by human milk alone [4,49], which provides only about 25 IU/L [50]. A recent review of reports of nutritional rickets found that a majority of cases occurred among young, breastfed African Americans [51]. The sun is a potential source of vitamin D, but AAP advises keeping infants out of direct sunlight and having them wear protective clothing and sunscreen [52]. As noted earlier, AAP recommends that exclusively and partially breastfed infants be supplemented with 400 IU of vitamin D per day [20]. Older adults Americans aged 50 and older are at increased risk of developing vitamin D insufficiency [33]. As people age, skin cannot synthesize vitamin D as efficiently and the kidney is less able to convert vitamin D to its active hormone form [4,53]. As many as half of older adults in the United States with hip fractures could have serum 25(OH)D levels <12 ng/mL (<30 nmol/L) [5]. People with limited sun exposure Homebound individuals, people living in northern latitudes (such as New England and Alaska), women who wear long robes and head coverings for religious reasons, and people with occupations that prevent sun exposure are unlikely to obtain adequate vitamin D from sunlight [54,55]. People with dark skin Greater amounts of the pigment melanin result in darker skin and reduce the skin's ability to produce vitamin D from exposure to sunlight. Some studies suggest that older adults, especially women, with darker skin are at high risk of developing vitamin D insufficiency [41,56]. However, one group with dark skin, African Americans, generally has lower levels of 25(OH)D yet develops fewer osteoporotic fractures than Caucasians (see section below on osteoporosis). People with fat malabsorption As a fat-soluble vitamin, vitamin D requires some dietary fat in the gut for absorption. Individuals who have a reduced ability to absorb dietary fat might require vitamin D supplements [57]. Fat malabsorption is associated with a variety of medical conditions including some forms of liver disease, cystic fibrosis, and Crohn's disease [27]. People who are obese or who have undergone gastric bypass surgery Individuals with a BMI ≥30 typically have a low plasma concentration of 25(OH)D [58]; this level decreases as obesity and body fat increase [59]. Obesity does not affect skin's capacity to synthesize vitamin D, but greater amounts of subcutaneous fat sequester more of the vitamin and alter its release into the circulation. Even with orally administered vitamin D, BMI is inversely correlated with peak serum concentrations, probably because some vitamin D is sequestered in the larger pools of body fat [58]. Obese individuals who have undergone gastric bypass surgery may become vitamin D deficient without a sufficient intake of this nutrient from food or supplements, since part of the upper small intestine where vitamin D is absorbed is bypassed [60,61]. Vitamin D and Health Optimal serum concentrations of 25(OH)D for bone and general health throughout life have not been established [5,10] and are likely to vary at each stage of life, depending on the physiological measures selected. The three-fold range of cut points that have been proposed by various experts, from 16 to 48 ng/mL (40 to 120 nmol/L), reflect differences in the functional endpoints chosen (e.g., serum concentrations of parathyroid hormone or bone fractures), as well as differences in the analytical methods used. In March 2007, a group of vitamin D and nutrition researchers published a controversial and provocative editorial contending that the desirable concentration of 25(OH)D is ≥30 ng/mL (≥75 nmol/L) [12]. They noted that supplemental intakes of 400 IU/day of vitamin D increase 25(OH)D concentrations by only 2.8-4.8 ng/mL (7-12 nmol/L) and that daily intakes of approximately 1,700 IU are needed to raise these concentrations from 20 to 32 ng/mL (50 to 80 nmol/L). Osteoporosis More than 25 million adults in the United States have or are at risk of developing osteoporosis, a disease characterized by fragile bones that significantly increases the risk of bone fractures [62]. Osteoporosis is most often associated with inadequate calcium intakes (generally <1,000-1,200 mg/day), but insufficient vitamin D contributes to osteoporosis by reducing calcium absorption [63]. Although rickets and osteomalacia are extreme examples of the effects of vitamin D deficiency, osteoporosis is an example of a long-term effect of calcium and vitamin D insufficiency [64]. Adequate storage levels of vitamin D maintain bone strength and might help prevent osteoporosis in older adults, nonambulatory individuals who have difficulty exercising, postmenopausal women, and individuals on chronic steroid therapy [65]. Normal bone is constantly being remodeled. During menopause, the balance between these processes changes, resulting in more bone being resorbed than rebuilt. Hormone therapy with estrogen and progesterone might be able to delay the onset of osteoporosis. However, some medical groups and professional societies recommend that postmenopausal women consider using other agents to slow or stop bone resorption because of the potential adverse health effects of hormone therapy [66-68]. Most supplementation trials of the effects of vitamin D on bone health also include calcium, so it is not possible to isolate the effects of each nutrient. The authors of a recent evidence-based review of research concluded that supplements of both vitamin D3 (at 700-800 IU/day) and calcium (500-1,200 mg/day) decreased the risk of falls, fractures, and bone loss in elderly individuals aged 62-85 years [5]. The decreased risk of fractures occurred primarily in elderly women aged 85 years, on average, and living in a nursing home. Women should consult their healthcare providers about their needs for vitamin D (and calcium) as part of an overall plan to prevent or treat osteoporosis. African Americans have lower levels of 25(OH)D than Caucasians, yet they develop fewer osteoporotic fractures. This suggests that factors other than vitamin D provide protection [69]. African Americans have an advantage in bone density from early childhood, a function of their more efficient calcium economy, and have a lower risk of fracture even when they have the same bone density as Caucasians. They also have a higher prevalence of obesity, and the resulting higher estrogen levels in obese women might protect them from bone loss [69]. Further reducing the risk of osteoporosis in African Americans are their lower levels of bone-turnover markers, shorter hip-axis length, and superior renal calcium conservation. However, despite this advantage in bone density, osteoporosis is a significant health problem among African Americans as they age [69]. Cancer Laboratory and animal evidence as well as epidemiologic data suggest that vitamin D status could affect cancer risk. Strong biological and mechanistic bases indicate that vitamin D plays a role in the prevention of colon, prostate, and breast cancers. Emerging epidemiologic data suggest that vitamin D has a protective effect against colon cancer, but the data are not as strong for a protective effect against prostate and breast cancer, and are variable for cancers at other sites [70,71]. Studies do not consistently show a protective effect or no effect, however. One study of Finnish smokers, for example, found that subjects in the highest quintile of baseline vitamin D status have a three-fold higher risk of developing pancreatic cancer [72]. Vitamin D emerged as a protective factor in a prospective, cross-sectional study of 3,121 adults aged ≥50 years (96% men) who underwent a colonoscopy. The study found that 10% had at least one advanced cancerous lesion. Those with the highest vitamin D intakes (>645 IU/day) had a significantly lower risk of these lesions [73]. However, the Women's Health Initiative, in which 36,282 postmenopausal women of various races and ethnicities were randomly assigned to receive 400 IU vitamin D plus 1,000 mg calcium daily or a placebo, found no significant differences between the groups in the incidence of colorectal cancers over 7 years [74]. More recently, a clinical trial focused on bone health in 1,179 postmenopausal women residing in rural Nebraska found that subjects supplemented daily with calcium (1,400-1,500 mg) and vitamin D3 (1,100 IU) had a significantly lower incidence of cancer over 4 years compared to women taking a placebo [64]. The small number of cancers reported (50) precludes generalizing about a protective effect from either or both nutrients or for cancers at different sites. This caution is supported by an analysis of 16,618 participants in NHANES III, where total cancer mortality was found to be unrelated to baseline vitamin D status [76]. However, colorectal cancer mortality was inversely related to serum 25(OH)D concentrations.
Further research is needed to determine whether vitamin D inadequacy in particular increases cancer risk, whether greater exposure to the nutrient is protective, and whether some individuals could be at increased risk of cancer because of vitamin D exposure [70,77].
Other conditions
A growing body of research suggests that vitamin D might play some role in the prevention and treatment of type 1 [78] and type 2 diabetes [79], hypertension [80], glucose intolerance [81], multiple sclerosis [82], and other medical conditions [83,84]. However, most evidence for these roles comes from in vitro, animal, and epidemiological studies, not the randomized clinical trials considered to be more definitive. Until such trials are conducted, the implications of the available evidence for public health and patient care will be debated. A systematic review of health outcomes related to vitamin D and calcium intakes, both alone and in combination, was published in August 2009 [85].
A recent meta-analysis found that use of vitamin D supplements was associated with a reduction in overall mortality from any cause by a statistically significant 7% [86,87]. The subjects in these trials were primarily healthy, middle aged or elderly, and at high risk of fractures; they took 300-2,000 IU/day of vitamin D supplements.
Health Risks from Excessive Vitamin D
Vitamin D toxicity can cause nonspecific symptoms such as nausea, vomiting, poor appetite, constipation, weakness, and weight loss [88]. More seriously, it can also raise blood levels of calcium, causing mental status changes such as confusion and heart rhythm abnormalities [7]. The use of supplements of both calcium (1,000 mg/day) and vitamin D (400 IU/day) by postmenopausal women was associated with a 17% increase in the risk of kidney stones over 7 years in the Women's Health Initiative [89]. Deposition of calcium and phosphate in the kidneys and other soft tissues can also be caused by excessive vitamin D levels [47]. A serum 25(OH)D concentration consistently >200 ng/mL (>500 nmol/L) is considered to be potentially toxic [11]. In an animal model, concentrations ≤400 ng/mL (≤1,000 nmol/L) were not associated with harm [14].
Excessive sun exposure does not result in vitamin D toxicity because the sustained heat on the skin is thought to photodegrade previtamin D3 and vitamin D3 as it is formed [10,35]. High intakes of dietary vitamin D are very unlikely to result in toxicity unless large amounts of cod liver oil are consumed; toxicity is more likely to occur from high intakes of supplements.
Long-term intakes above the UL increase the risk of adverse health effects [4] (Table 4). Substantially larger doses administered for a short time or periodically (e.g., 50,000 IU/week for 8 weeks) do not cause toxicity. Rather, the excess is stored and used as needed to maintain normal serum 25(OH)D concentrations when vitamin D intakes or sun exposure are limited [11,90].
Table 4: Tolerable Upper Intake Levels (ULs) for Vitamin D [4]Age Children Men Women Pregnancy Lactation
Birth to 12 months 25 mcg
(1,000 IU)
1-13 years 50 mcg
(2,000 IU)
14+ years 50 mcg
(2,000 IU) 50 mcg
(2,000 IU) 50 mcg
(2,000 IU) 50 mcg
(2,000 IU)
Several nutrition scientists recently challenged these ULs, first published in 1997 [90]. They point to newer clinical trials conducted in healthy adults and conclude that the data support a UL as high as 10,000 IU/day. Although vitamin D supplements above recommended levels given in clinical trials have not shown harm, most trials were not adequately designed to assess harm [5]. Evidence is not sufficient to determine the potential risks of excess vitamin D in infants, children, and women of reproductive age.
As noted earlier, the FNB is currently reviewing data to determine whether updates to the DRIs (including the ULs) for vitamin D are appropriate [4].
Interactions with Medications
Vitamin D supplements have the potential to interact with several types of medications. A few examples are provided below. Individuals taking these medications on a regular basis should discuss vitamin D intakes with their healthcare providers.
Steroids
Corticosteroid medications such as prednisone, often prescribed to reduce inflammation, can reduce calcium absorption [91-93] and impair vitamin D metabolism. These effects can further contribute to the loss of bone and the development of osteoporosis associated with their long-term use [92,93].
Other medications
Both the weight-loss drug orlistat (brand names Xenical® and alli™) and the cholesterol-lowering drug cholestyramine (brand names Questran®, LoCholest®, and Prevalite®) can reduce the absorption of vitamin D and other fat-soluble vitamins [94,95]. Both phenobarbital and phenytoin (brand name Dilantin®), used to prevent and control epileptic seizures, increase the hepatic metabolism of vitamin D to inactive compounds and reduce calcium absorption [96].
Vitamin D and Healthful Diets
According to the 2005 Dietary Guidelines for Americans, "nutrient needs should be met primarily through consuming foods. Foods provide an array of nutrients and other compounds that may have beneficial effects on health. In certain cases, fortified foods and dietary supplements may be useful sources of one or more nutrients that otherwise might be consumed in less than recommended amounts. However, dietary supplements, while recommended in some cases, cannot replace a healthful diet."
The Dietary Guidelines for Americans describes a healthy diet as one that
Emphasizes a variety of fruits, vegetables, whole grains, and fat-free or low-fat milk and milk products.
Milk is fortified with vitamin D, as are many ready-to-eat cereals and a few brands of yogurt and orange juice. Cheese naturally contains small amounts of vitamin D.
Includes lean meats, poultry, fish, beans, eggs, and nuts.
Fish such as salmon, tuna, and mackerel are very good sources of vitamin D. Small amounts of vitamin D are also found in beef liver and egg yolks.
Is low in saturated fats, trans fats, cholesterol, salt (sodium), and added sugars.
Vitamin D is added to some margarines.
Stays within your daily calorie needs.
For more information about building a healthful diet, refer to the Dietary Guidelines for Americans (http://www.health.gov/dietaryguidelines/dga2005/document/default.htm) and the U.S. Department of Agriculture's food guidance system, My Pyramid (http://www.mypyramid.gov).
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Reasonable care has been taken in preparing this document and the information provided herein is believed to be accurate. However, this information is not intended to constitute an "authoritative statement" under Food and Drug Administration rules and regulations.
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The mission of the Office of Dietary Supplements (ODS) is to strengthen knowledge and understanding of dietary supplements by evaluating scientific information, stimulating and supporting research, disseminating research results, and educating the public to foster an enhanced quality of life and health for the U.S. population.
General Safety Advisory
Health professionals and consumers need credible information to make thoughtful decisions about eating a healthful diet and using vitamin and mineral supplements. These Fact Sheets provide responsible information about the role of vitamins and minerals in health and disease. Each Fact Sheet in this series received extensive review by recognized experts from the academic and research communities.
The information is not intended to be a substitute for professional medical advice. It is important to seek the advice of a physician about any medical condition or symptom. It is also important to seek the advice of a physician, registered dietitian, pharmacist, or other qualified health professional about the appropriateness of taking dietary supplements and their potential interactions with medications.
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Document Last Updated: 11/13/2009
Office of Dietary Supplements
National Institutes of Health
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Table of Contents
Introduction
Reference Intakes
Sources of Vitamin D
Vitamin D Intakes and Status
Vitamin D Deficiency
Groups at Risk of Vitamin D Inadequacy
Vitamin D and Health
Health Risks from Excessive Vitamin D
Interactions with Medications
Vitamin D and Healthful Diets
References
Introduction
Vitamin D is a fat-soluble vitamin that is naturally present in very few foods, added to others, and available as a dietary supplement. It is also produced endogenously when ultraviolet rays from sunlight strike the skin and trigger vitamin D synthesis [1,2]. Vitamin D obtained from sun exposure, food, and supplements is biologically inert and must undergo two hydroxylations in the body for activation. The first occurs in the liver and converts vitamin D to 25-hydroxyvitamin D [25(OH)D], also known as calcidiol. The second occurs primarily in the kidney and forms the physiologically active 1,25-dihydroxyvitamin D [1,25(OH)2D], also known as calcitriol [3].
Vitamin D is essential for promoting calcium absorption in the gut and maintaining adequate serum calcium and phosphate concentrations to enable normal mineralization of bone and prevent hypocalcemic tetany. It is also needed for bone growth and bone remodeling by osteoblasts and osteoclasts [3,4,5]. Without sufficient vitamin D, bones can become thin, brittle, or misshapen. Vitamin D sufficiency prevents rickets in children and osteomalacia in adults [2,6,7]. Together with calcium, vitamin D also helps protect older adults from osteoporosis.
Vitamin D has other roles in human health, including modulation of neuromuscular and immune function and reduction of inflammation. Many genes encoding proteins that regulate cell proliferation, differentiation, and apoptosis are modulated in part by vitamin D [3,5,8,9]. Many laboratory-cultured human cells have vitamin D receptors and some convert 25(OH)D to 1,25(OH)2D [10]. It remains to be determined whether cells with vitamin D receptors in the intact human carry out this conversion.
Serum concentration of 25(OH)D is the best indicator of vitamin D status. It reflects vitamin D produced cutaneously and that obtained from food and supplements [4] and has a fairly long circulating half-life of 15 days [11]. However, serum 25(OH)D levels do not indicate the amount of vitamin D stored in other body tissues. Circulating 1,25(OH)2D is generally not a good indicator of vitamin D status because it has a short half-life of 15 hours and serum concentrations are closely regulated by parathyroid hormone, calcium, and phosphate [11]. Levels of 1,25(OH)2D do not typically decrease until vitamin D deficiency is severe [5,10].
There is considerable discussion of the serum concentrations of 25(OH)D associated with deficiency (e.g., rickets), adequacy for bone health, and optimal overall health (Table 1). A concentration of <15 nanograms per milliliter (ng/mL) (or <37.5 nanomoles per liter [nmol/L]) is generally considered inadequate; concentrations >15 ng/ml (>37.5 nmol/L) are recommended. Higher levels are proposed by some (>30 ng/ml or >75 nmol/L) as desirable for overall health and disease prevention [12], but insufficient data are available to support them [13]. Serum concentrations of 25(OH)D consistently >200 ng/ml (>500 nmol/L) are potentially toxic.
Table 1: Serum 25-Hydroxyvitamin D [25(OH)D] Concentrations and Health*ng/mL** nmol/L** Health status
<10-11 <25-27.5 Associated with vitamin D deficiency, leading to rickets in infants and children and osteomalacia in adults [4,13] <10-15 <25-37.5 Generally considered inadequate for bone and overall health in healthy individuals [4,13] ≥15 ≥37.5 Generally considered adequate for bone and overall health in healthy individuals [4] Consistently >200 Consistently >500 Considered potentially toxic, leading to hypercalcemia and hyperphosphatemia, although human data are limited. In an animal model, concentrations ≤400 ng/mL (≤1,000 nmol/L) demonstrated no toxicity [11,14].
* Serum concentrations of 25(OH)D are reported in both nanograms per milliliter (ng/mL) and nanomoles per liter (nmol/L).
** 1 ng/mL = 2.5 nmol/L
An additional complication in assessing vitamin D status is in the actual measurement of serum concentrations of 25(OH)D. Considerable variability exists among the various assays available and among laboratories that conduct the analyses [15,16,17]. This means that compared to the actual concentration of 25(OH)D in a sample of blood serum, a falsely low or falsely high value may be obtained depending on the assay or laboratory used [18]. A standard reference material for 25(OH)D became available in July 2009 that will now permit standardization of values across laboratories [19].
Reference Intakes
Intake reference values for vitamin D and other nutrients are provided in the Dietary Reference Intakes (DRIs) developed by the Food and Nutrition Board (FNB) at the Institute of Medicine of The National Academies (formerly National Academy of Sciences) [4]. DRI is the general term for a set of reference values used to plan and assess nutrient intakes of healthy people. These values, which vary by age and gender [4], include:
Recommended Dietary Allowance (RDA): average daily level of intake sufficient to meet the nutrient requirements of nearly all (97%-98%) healthy people.
Adequate Intake (AI): established when evidence is insufficient to develop an RDA and is set at a level assumed to ensure nutritional adequacy.
Tolerable Upper Intake Level (UL): maximum daily intake unlikely to cause adverse health effects [4].
The FNB established an AI for vitamin D that represents a daily intake that is sufficient to maintain bone health and normal calcium metabolism in healthy people. AIs for vitamin D are listed in both micrograms (mcg) and International Units (IUs); the biological activity of 1 mcg is equal to 40 IU (Table 2). The AIs for vitamin D are based on the assumption that the vitamin is not synthesized by exposure to sunlight [4].
Table 2: Adequate Intakes (AIs) for Vitamin D [4]Age Children Men Women Pregnancy Lactation
Birth to 13 years 5 mcg
(200 IU)
14-18 years 5 mcg
(200 IU) 5 mcg
(200 IU) 5 mcg
(200 IU) 5 mcg
(200 IU)
19-50 years 5 mcg
(200 IU) 5 mcg
(200 IU) 5 mcg
(200 IU) 5 mcg
(200 IU)
51-70 years 10 mcg
(400 IU) 10 mcg
(400 IU)
71+ years 15 mcg
(600 IU) 15 mcg
(600 IU)
In 2008, the American Academy of Pediatrics (AAP) issued recommended intakes for vitamin D that exceed those of FNB [20]. The AAP recommendations are based on evidence from more recent clinical trials and the history of safe use of 400 IU/day of vitamin D in pediatric and adolescent populations. AAP recommends that exclusively and partially breastfed infants receive supplements of 400 IU/day of vitamin D shortly after birth and continue to receive these supplements until they are weaned and consume ≥1,000 mL/day of vitamin D-fortified formula or whole milk [20]. (All formulas sold in the United States provide ≥400 IU vitamin D3 per liter, and the majority of vitamin D-only and multivitamin liquid supplements provide 400 IU per serving.) Similarly, all non-breastfed infants ingesting <1,000 mL/day of vitamin D-fortified formula or milk should receive a vitamin D supplement of 400 IU/day. AAP also recommends that older children and adolescents who do not obtain 400 IU/day through vitamin D-fortified milk and foods should take a 400 IU vitamin D supplement daily [20]. The FNB established an expert committee in 2008 to review the DRIs for vitamin D (and calcium). The current DRIs for this nutrient were established in 1997, and since that time substantial new research has been published to justify a reevaluation of adequate vitamin D intakes for healthy populations. Determinations of DRIs are based on indicators of adequacy or hazard; dose-response curves; health outcomes; life-stage groups; and relations between intakes, biomarkers, and outcomes. For vitamin D, the FNB committee will focus on (1) effects of circulating concentrations of 25(OH)D on health outcomes, (2) effects of vitamin D intakes on circulating 25(OH)D and on health outcomes, and (3) levels of intake associated with adverse effects [21]. The FNB expects to issue its report, updating as appropriate the DRIs for vitamin D and calcium, by May 2010 [22]. Sources of Vitamin D Food Very few foods in nature contain vitamin D. The flesh of fish (such as salmon, tuna, and mackerel) and fish liver oils are among the best sources [4]. Small amounts of vitamin D are found in beef liver, cheese, and egg yolks. Vitamin D in these foods is primarily in the form of vitamin D3 (cholecalciferol) and its metabolite 25(OH)D3 [23]. Some mushrooms provide vitamin D2 (ergocalciferol) in variable amounts [24-26]. Mushrooms with enhanced levels of vitamin D2 from being exposed to ultraviolet light under controlled conditions are also available. Fortified foods provide most of the vitamin D in the American diet [4,26]. For example, almost all of the U.S. milk supply is fortified with 100 IU/cup of vitamin D (25% of the Daily Value or 50% of the AI level for ages 14-50 years). In the 1930s, a milk fortification program was implemented in the United States to combat rickets, then a major public health problem. This program virtually eliminated the disorder at that time [4,14]. Other dairy products made from milk, such as cheese and ice cream, are generally not fortified. Ready-to-eat breakfast cereals often contain added vitamin D, as do some brands of orange juice, yogurt, and margarine. In the United States, foods allowed to be fortified with vitamin D include cereal flours and related products, milk and products made from milk, and calcium-fortified fruit juices and drinks [27]. Maximum levels of added vitamin D are specified by law. Several food sources of vitamin D are listed in Table 3. Table 3: Selected Food Sources of Vitamin D [30]Food IUs per serving* Percent DV** Cod liver oil, 1 tablespoon 1,360 340 Salmon (sockeye), cooked, 3 ounces 794 199 Mushrooms that have been exposed to ultraviolet light to increase vitamin D, 3 ounces (not yet commonly available) 400 100 Mackerel, cooked, 3 ounces 388 97 Tuna fish, canned in water, drained, 3 ounces 154 39 Milk, nonfat, reduced fat, and whole, vitamin D-fortified, 1 cup 115-124 29-31 Orange juice fortified with vitamin D, 1 cup (check product labels, as amount of added vitamin D varies) 100 25 Yogurt, fortified with 20% of the DV for vitamin D, 6 ounces (more heavily fortified yogurts provide more of the DV) 80 20 Margarine, fortified, 1 tablespoon 60 15 Sardines, canned in oil, drained, 2 sardines 46 12 Liver, beef, cooked, 3.5 ounces 46 12 Ready-to-eat cereal, fortified with 10% of the DV for vitamin D, 0.75-1 cup (more heavily fortified cereals might provide more of the DV) 40 10 Egg, 1 whole (vitamin D is found in yolk) 25 6 Cheese, Swiss, 1 ounce 6 2 *IUs = International Units. **DV = Daily Value. DVs were developed by the U.S. Food and Drug Administration to help consumers compare the nutrient contents of products within the context of a total diet. The DV for vitamin D is 400 IU for adults and children age 4 and older. Food labels, however, are not required to list vitamin D content unless a food has been fortified with this nutrient. Foods providing 20% or more of the DV are considered to be high sources of a nutrient. The U.S. Department of Agriculture's Nutrient Database Web site, http://www.nal.usda.gov/fnic/foodcomp/search, lists the nutrient content of many foods and provides a list of foods containing vitamin D: http://www.ars.usda.gov/SP2UserFiles/Place/12354500/Data/SR22/nutrlist/sr22a324.pdf. A growing number of foods are being analyzed for vitamin D content. Simpler and faster methods to measure vitamin D in foods are needed, as are food standard reference materials with certified values for vitamin D to ensure accurate measurements [31]. Sun exposure Most people meet their vitamin D needs through exposure to sunlight [5,31]. Ultraviolet (UV) B radiation with a wavelength of 290-315 nanometers penetrates uncovered skin and converts cutaneous 7-dehydrocholesterol to previtamin D3, which in turn becomes vitamin D3 [9,32,33]. Season, geographic latitude, time of day, cloud cover, smog, skin melanin content, and sunscreen are among the factors that affect UV radiation exposure and vitamin D synthesis [33]. The UV energy above 42 degrees north latitude (a line approximately between the northern border of California and Boston) is insufficient for cutaneous vitamin D synthesis from November through February [5]; in far northern latitudes, this reduced intensity lasts for up to 6 months. In the United States, latitudes below 34 degrees north (a line between Los Angeles and Columbia, South Carolina) allow for cutaneous production of vitamin D throughout the year [27]. Complete cloud cover reduces UV energy by 50%; shade (including that produced by severe pollution) reduces it by 60% [34]. UVB radiation does not penetrate glass, so exposure to sunshine indoors through a window does not produce vitamin D [35]. Sunscreens with a sun protection factor of 8 or more appear to block vitamin D-producing UV rays, although in practice people generally do not apply sufficient amounts, cover all sun-exposed skin, or reapply sunscreen regularly [36]. Skin likely synthesizes some vitamin D even when it is protected by sunscreen as typically applied. The factors that affect UV radiation exposure and research to date on the amount of sun exposure needed to maintain adequate vitamin D levels make it difficult to provide general guidelines. It has been suggested by some vitamin D researchers, for example, that approximately 5-30 minutes of sun exposure between 10 AM and 3 PM at least twice a week to the face, arms, legs, or back without sunscreen usually lead to sufficient vitamin D synthesis and that the moderate use of commercial tanning beds that emit 2%-6% UVB radiation is also effective [10,33]. Individuals with limited sun exposure need to include good sources of vitamin D in their diet or take a supplement. Despite the importance of the sun to vitamin D synthesis, it is prudent to limit exposure of skin to sunlight [36] and UV radiation from tanning beds [37]. UV radiation is a carcinogen responsible for most of the estimated 1.5 million skin cancers and the 8,000 deaths due to metastatic melanoma that occur annually in the United States [36]. Lifetime cumulative UV damage to skin is also largely responsible for some age-associated dryness and other cosmetic changes. It is not known whether a desirable level of regular sun exposure exists that imposes no (or minimal) risk of skin cancer over time. The American Academy of Dermatology advises that photoprotective measures be taken, including the use of sunscreen, whenever one is exposed to the sun [38]. Dietary supplements In supplements and fortified foods, vitamin D is available in two forms, D2 (ergocalciferol) and D3 (cholecalciferol). Vitamin D2 is manufactured by the UV irradiation of ergosterol in yeast, and vitamin D3 is manufactured by the irradiation of 7-dehydrocholesterol from lanolin and the chemical conversion of cholesterol [10]. The two forms have traditionally been regarded as equivalent based on their ability to cure rickets, but evidence has been offered that they are metabolized differently. Vitamin D3 could be more than three times as effective as vitamin D2 in raising serum 25(OH)D concentrations and maintaining those levels for a longer time, and its metabolites have superior affinity for vitamin D-binding proteins in plasma [5,39,40]. Because metabolite receptor affinity is not a functional assessment, as the earlier results for the healing of rickets were, further research is needed on the comparative physiological effects of both forms. Many supplements are being reformulated to contain vitamin D3 instead of vitamin D2 [40]. Both forms (as well as vitamin D in foods and from cutaneous synthesis) effectively raise serum 25(OH)D levels [5]. Vitamin D Intakes and Status In 1988-1994, as part of the third National Health and Nutrition Examination Survey (NHANES III), the frequency of use of some vitamin D-containing foods and supplements was examined in 1,546 non-Hispanic African American women and 1,426 non-Hispanic white women of reproductive age (15-49 years) [41]. In both groups, 25(OH)D levels were higher in the fall (after a summer of sun exposure) and when milk or fortified cereals were consumed more than three times per week. The prevalence of serum concentrations of 25(OH)D ≤15 ng/mL (≤37.5 nmol/L) was 10 times greater for the African American women (42.2%) than for the white women (4.2%). The 2000-2004 NHANES provides the most recent data on the vitamin D nutritional status of the U.S. population. Generally, younger people had higher serum 25(OH)D levels than older people, males had higher levels than females, and non-Hispanic whites had higher levels than Mexican Americans, who in turn had higher levels than non-Hispanic blacks. Depending on the population group, 1%-9% had serum 25(OH)D levels <11 ng/mL (<27.5 nmol/L), 8%-36% had levels <20 ng/mL (<50 nmol/L), and the majority (50%-78%) had levels <30 ng/mL (<75 nmol/L) [42]. In NHANES 2000-2004, age-adjusted mean serum 25(OH)D concentrations were 2-8 ng/mL (5–20 nmol/L) lower compared to NHANES III [43]. However, after adjustment for assay shifts, age-adjusted means in NHANES 2000–2004 remained significantly lower (by 2.0-3.6 ng/mL (5–9 nmol/L)) in most males, but not in most females. In a study subsample, adjustment for the confounding effects of assay differences changed mean serum 25(OH)D concentrations by ~4 ng/mL (~10 nmol/L), and adjustment for changes in the factors likely related to real changes in vitamin D status (such as body mass index (BMI), milk intake, and sun protection) changed mean serum 25(OH)D concentrations by 0.4-0.64 ng/mL (1.0-1.6 nmol/L). Subsequent to this report, another investigator [44] evaluated vitamin D levels measured in NHANES 2001-2004 compared to NHANES III and reported a marked decline, leading some to suggest that the majority of children and adults in the United States (and almost all African Americans and Mexican Americans) are vitamin D insufficient. However, this analysis exaggerates the temporal and demographic trends in vitamin D status because it uses a higher than usual cutoff to characterize vitamin D insufficiency, does not separate the independent effects of season and latitude in data and, most seriously, fails to compensate for a change in the 25(OH)D measurement assay used between both sets of NHANES surveys [45]. Over time, mean serum 25(OH)D concentrations in the United States have declined, but only modestly, when compensating for the assay change [43]. The real decline (~2.0-3.6 ng/mL (~5-9 nmol/L)) is likely due to simultaneous increases in BMI, reduced milk intake, and greater use of sun protection in the U.S. population. According to NHANES data from 2005-2006, only 29% of adult men and 17% of adult women (ages 19 and older) had intakes of vitamin D from food alone that exceeded their AIs. Overall in the U.S. population, only about one-third of individuals 1 year of age and older had vitamin D intakes from food exceeding their respective AIs [46]. However, dietary supplements as well as foods contribute vitamin D, so both sources must be included to obtain a true picture of total intakes. In 2005-2006, 37% of people in the United States reported the use of a dietary supplement containing vitamin D. Total intake estimates of vitamin D from both food and supplements are currently being tabulated by the Office of Dietary Supplements. Vitamin D Deficiency Nutrient deficiencies are usually the result of dietary inadequacy, impaired absorption and use, increased requirement, or increased excretion. A vitamin D deficiency can occur when usual intake is lower than recommended levels over time, exposure to sunlight is limited, the kidneys cannot convert vitamin D to its active form, or absorption of vitamin D from the digestive tract is inadequate. Vitamin D-deficient diets are associated with milk allergy, lactose intolerance, and strict vegetarianism [47]. Rickets and osteomalacia are the classical vitamin D deficiency diseases. In children, vitamin D deficiency causes rickets, a disease characterized by a failure of bone tissue to properly mineralize, resulting in soft bones and skeletal deformities [34]. Rickets was first described in the mid-17th century by British researchers [34,48]. In the late 19th and early 20th centuries, German physicians noted that consuming 1-3 teaspoons of cod liver oil per day could reverse rickets [48]. In the 1920s and prior to identification of the structure of vitamin D and its metabolites, biochemist Harry Steenbock patented a process to impart antirachitic activity to foods [27]. The process involved the addition of what turned out to be precursor forms of vitamin D followed by exposure to UV radiation. The fortification of milk with vitamin D has made rickets a rare disease in the United States. However, rickets is still reported periodically, particularly among African American infants and children [34,48]. A 2003 report from Memphis, for example, described 21 cases of rickets among infants, 20 of whom were African American [48]. Prolonged exclusive breastfeeding without the AAP-recommended vitamin D supplementation is a significant cause of rickets, particularly in dark-skinned infants breastfed by mothers who are not vitamin D replete [6]. Additional causes of rickets include extensive use of sunscreens and placement of children in daycare programs, where they often have less outdoor activity and sun exposure [34,48]. Rickets is also more prevalent among immigrants from Asia, Africa, and the Middle East, possibly because of genetic differences in vitamin D metabolism and behavioral differences that lead to less sun exposure [34]. In adults, vitamin D deficiency can lead to osteomalacia, resulting in weak muscles and bones [6,7,11]. Symptoms of bone pain and muscle weakness can indicate inadequate vitamin D levels, but such symptoms can be subtle and go undetected in the initial stages. Groups at Risk of Vitamin D Inadequacy Obtaining sufficient vitamin D from natural food sources alone can be difficult. For many people, consuming vitamin D-fortified foods and being exposed to sunlight are essential for maintaining a healthy vitamin D status. In some groups, dietary supplements might be required to meet the daily need for vitamin D. Breastfed infants Vitamin D requirements cannot be met by human milk alone [4,49], which provides only about 25 IU/L [50]. A recent review of reports of nutritional rickets found that a majority of cases occurred among young, breastfed African Americans [51]. The sun is a potential source of vitamin D, but AAP advises keeping infants out of direct sunlight and having them wear protective clothing and sunscreen [52]. As noted earlier, AAP recommends that exclusively and partially breastfed infants be supplemented with 400 IU of vitamin D per day [20]. Older adults Americans aged 50 and older are at increased risk of developing vitamin D insufficiency [33]. As people age, skin cannot synthesize vitamin D as efficiently and the kidney is less able to convert vitamin D to its active hormone form [4,53]. As many as half of older adults in the United States with hip fractures could have serum 25(OH)D levels <12 ng/mL (<30 nmol/L) [5]. People with limited sun exposure Homebound individuals, people living in northern latitudes (such as New England and Alaska), women who wear long robes and head coverings for religious reasons, and people with occupations that prevent sun exposure are unlikely to obtain adequate vitamin D from sunlight [54,55]. People with dark skin Greater amounts of the pigment melanin result in darker skin and reduce the skin's ability to produce vitamin D from exposure to sunlight. Some studies suggest that older adults, especially women, with darker skin are at high risk of developing vitamin D insufficiency [41,56]. However, one group with dark skin, African Americans, generally has lower levels of 25(OH)D yet develops fewer osteoporotic fractures than Caucasians (see section below on osteoporosis). People with fat malabsorption As a fat-soluble vitamin, vitamin D requires some dietary fat in the gut for absorption. Individuals who have a reduced ability to absorb dietary fat might require vitamin D supplements [57]. Fat malabsorption is associated with a variety of medical conditions including some forms of liver disease, cystic fibrosis, and Crohn's disease [27]. People who are obese or who have undergone gastric bypass surgery Individuals with a BMI ≥30 typically have a low plasma concentration of 25(OH)D [58]; this level decreases as obesity and body fat increase [59]. Obesity does not affect skin's capacity to synthesize vitamin D, but greater amounts of subcutaneous fat sequester more of the vitamin and alter its release into the circulation. Even with orally administered vitamin D, BMI is inversely correlated with peak serum concentrations, probably because some vitamin D is sequestered in the larger pools of body fat [58]. Obese individuals who have undergone gastric bypass surgery may become vitamin D deficient without a sufficient intake of this nutrient from food or supplements, since part of the upper small intestine where vitamin D is absorbed is bypassed [60,61]. Vitamin D and Health Optimal serum concentrations of 25(OH)D for bone and general health throughout life have not been established [5,10] and are likely to vary at each stage of life, depending on the physiological measures selected. The three-fold range of cut points that have been proposed by various experts, from 16 to 48 ng/mL (40 to 120 nmol/L), reflect differences in the functional endpoints chosen (e.g., serum concentrations of parathyroid hormone or bone fractures), as well as differences in the analytical methods used. In March 2007, a group of vitamin D and nutrition researchers published a controversial and provocative editorial contending that the desirable concentration of 25(OH)D is ≥30 ng/mL (≥75 nmol/L) [12]. They noted that supplemental intakes of 400 IU/day of vitamin D increase 25(OH)D concentrations by only 2.8-4.8 ng/mL (7-12 nmol/L) and that daily intakes of approximately 1,700 IU are needed to raise these concentrations from 20 to 32 ng/mL (50 to 80 nmol/L). Osteoporosis More than 25 million adults in the United States have or are at risk of developing osteoporosis, a disease characterized by fragile bones that significantly increases the risk of bone fractures [62]. Osteoporosis is most often associated with inadequate calcium intakes (generally <1,000-1,200 mg/day), but insufficient vitamin D contributes to osteoporosis by reducing calcium absorption [63]. Although rickets and osteomalacia are extreme examples of the effects of vitamin D deficiency, osteoporosis is an example of a long-term effect of calcium and vitamin D insufficiency [64]. Adequate storage levels of vitamin D maintain bone strength and might help prevent osteoporosis in older adults, nonambulatory individuals who have difficulty exercising, postmenopausal women, and individuals on chronic steroid therapy [65]. Normal bone is constantly being remodeled. During menopause, the balance between these processes changes, resulting in more bone being resorbed than rebuilt. Hormone therapy with estrogen and progesterone might be able to delay the onset of osteoporosis. However, some medical groups and professional societies recommend that postmenopausal women consider using other agents to slow or stop bone resorption because of the potential adverse health effects of hormone therapy [66-68]. Most supplementation trials of the effects of vitamin D on bone health also include calcium, so it is not possible to isolate the effects of each nutrient. The authors of a recent evidence-based review of research concluded that supplements of both vitamin D3 (at 700-800 IU/day) and calcium (500-1,200 mg/day) decreased the risk of falls, fractures, and bone loss in elderly individuals aged 62-85 years [5]. The decreased risk of fractures occurred primarily in elderly women aged 85 years, on average, and living in a nursing home. Women should consult their healthcare providers about their needs for vitamin D (and calcium) as part of an overall plan to prevent or treat osteoporosis. African Americans have lower levels of 25(OH)D than Caucasians, yet they develop fewer osteoporotic fractures. This suggests that factors other than vitamin D provide protection [69]. African Americans have an advantage in bone density from early childhood, a function of their more efficient calcium economy, and have a lower risk of fracture even when they have the same bone density as Caucasians. They also have a higher prevalence of obesity, and the resulting higher estrogen levels in obese women might protect them from bone loss [69]. Further reducing the risk of osteoporosis in African Americans are their lower levels of bone-turnover markers, shorter hip-axis length, and superior renal calcium conservation. However, despite this advantage in bone density, osteoporosis is a significant health problem among African Americans as they age [69]. Cancer Laboratory and animal evidence as well as epidemiologic data suggest that vitamin D status could affect cancer risk. Strong biological and mechanistic bases indicate that vitamin D plays a role in the prevention of colon, prostate, and breast cancers. Emerging epidemiologic data suggest that vitamin D has a protective effect against colon cancer, but the data are not as strong for a protective effect against prostate and breast cancer, and are variable for cancers at other sites [70,71]. Studies do not consistently show a protective effect or no effect, however. One study of Finnish smokers, for example, found that subjects in the highest quintile of baseline vitamin D status have a three-fold higher risk of developing pancreatic cancer [72]. Vitamin D emerged as a protective factor in a prospective, cross-sectional study of 3,121 adults aged ≥50 years (96% men) who underwent a colonoscopy. The study found that 10% had at least one advanced cancerous lesion. Those with the highest vitamin D intakes (>645 IU/day) had a significantly lower risk of these lesions [73]. However, the Women's Health Initiative, in which 36,282 postmenopausal women of various races and ethnicities were randomly assigned to receive 400 IU vitamin D plus 1,000 mg calcium daily or a placebo, found no significant differences between the groups in the incidence of colorectal cancers over 7 years [74]. More recently, a clinical trial focused on bone health in 1,179 postmenopausal women residing in rural Nebraska found that subjects supplemented daily with calcium (1,400-1,500 mg) and vitamin D3 (1,100 IU) had a significantly lower incidence of cancer over 4 years compared to women taking a placebo [64]. The small number of cancers reported (50) precludes generalizing about a protective effect from either or both nutrients or for cancers at different sites. This caution is supported by an analysis of 16,618 participants in NHANES III, where total cancer mortality was found to be unrelated to baseline vitamin D status [76]. However, colorectal cancer mortality was inversely related to serum 25(OH)D concentrations.
Further research is needed to determine whether vitamin D inadequacy in particular increases cancer risk, whether greater exposure to the nutrient is protective, and whether some individuals could be at increased risk of cancer because of vitamin D exposure [70,77].
Other conditions
A growing body of research suggests that vitamin D might play some role in the prevention and treatment of type 1 [78] and type 2 diabetes [79], hypertension [80], glucose intolerance [81], multiple sclerosis [82], and other medical conditions [83,84]. However, most evidence for these roles comes from in vitro, animal, and epidemiological studies, not the randomized clinical trials considered to be more definitive. Until such trials are conducted, the implications of the available evidence for public health and patient care will be debated. A systematic review of health outcomes related to vitamin D and calcium intakes, both alone and in combination, was published in August 2009 [85].
A recent meta-analysis found that use of vitamin D supplements was associated with a reduction in overall mortality from any cause by a statistically significant 7% [86,87]. The subjects in these trials were primarily healthy, middle aged or elderly, and at high risk of fractures; they took 300-2,000 IU/day of vitamin D supplements.
Health Risks from Excessive Vitamin D
Vitamin D toxicity can cause nonspecific symptoms such as nausea, vomiting, poor appetite, constipation, weakness, and weight loss [88]. More seriously, it can also raise blood levels of calcium, causing mental status changes such as confusion and heart rhythm abnormalities [7]. The use of supplements of both calcium (1,000 mg/day) and vitamin D (400 IU/day) by postmenopausal women was associated with a 17% increase in the risk of kidney stones over 7 years in the Women's Health Initiative [89]. Deposition of calcium and phosphate in the kidneys and other soft tissues can also be caused by excessive vitamin D levels [47]. A serum 25(OH)D concentration consistently >200 ng/mL (>500 nmol/L) is considered to be potentially toxic [11]. In an animal model, concentrations ≤400 ng/mL (≤1,000 nmol/L) were not associated with harm [14].
Excessive sun exposure does not result in vitamin D toxicity because the sustained heat on the skin is thought to photodegrade previtamin D3 and vitamin D3 as it is formed [10,35]. High intakes of dietary vitamin D are very unlikely to result in toxicity unless large amounts of cod liver oil are consumed; toxicity is more likely to occur from high intakes of supplements.
Long-term intakes above the UL increase the risk of adverse health effects [4] (Table 4). Substantially larger doses administered for a short time or periodically (e.g., 50,000 IU/week for 8 weeks) do not cause toxicity. Rather, the excess is stored and used as needed to maintain normal serum 25(OH)D concentrations when vitamin D intakes or sun exposure are limited [11,90].
Table 4: Tolerable Upper Intake Levels (ULs) for Vitamin D [4]Age Children Men Women Pregnancy Lactation
Birth to 12 months 25 mcg
(1,000 IU)
1-13 years 50 mcg
(2,000 IU)
14+ years 50 mcg
(2,000 IU) 50 mcg
(2,000 IU) 50 mcg
(2,000 IU) 50 mcg
(2,000 IU)
Several nutrition scientists recently challenged these ULs, first published in 1997 [90]. They point to newer clinical trials conducted in healthy adults and conclude that the data support a UL as high as 10,000 IU/day. Although vitamin D supplements above recommended levels given in clinical trials have not shown harm, most trials were not adequately designed to assess harm [5]. Evidence is not sufficient to determine the potential risks of excess vitamin D in infants, children, and women of reproductive age.
As noted earlier, the FNB is currently reviewing data to determine whether updates to the DRIs (including the ULs) for vitamin D are appropriate [4].
Interactions with Medications
Vitamin D supplements have the potential to interact with several types of medications. A few examples are provided below. Individuals taking these medications on a regular basis should discuss vitamin D intakes with their healthcare providers.
Steroids
Corticosteroid medications such as prednisone, often prescribed to reduce inflammation, can reduce calcium absorption [91-93] and impair vitamin D metabolism. These effects can further contribute to the loss of bone and the development of osteoporosis associated with their long-term use [92,93].
Other medications
Both the weight-loss drug orlistat (brand names Xenical® and alli™) and the cholesterol-lowering drug cholestyramine (brand names Questran®, LoCholest®, and Prevalite®) can reduce the absorption of vitamin D and other fat-soluble vitamins [94,95]. Both phenobarbital and phenytoin (brand name Dilantin®), used to prevent and control epileptic seizures, increase the hepatic metabolism of vitamin D to inactive compounds and reduce calcium absorption [96].
Vitamin D and Healthful Diets
According to the 2005 Dietary Guidelines for Americans, "nutrient needs should be met primarily through consuming foods. Foods provide an array of nutrients and other compounds that may have beneficial effects on health. In certain cases, fortified foods and dietary supplements may be useful sources of one or more nutrients that otherwise might be consumed in less than recommended amounts. However, dietary supplements, while recommended in some cases, cannot replace a healthful diet."
The Dietary Guidelines for Americans describes a healthy diet as one that
Emphasizes a variety of fruits, vegetables, whole grains, and fat-free or low-fat milk and milk products.
Milk is fortified with vitamin D, as are many ready-to-eat cereals and a few brands of yogurt and orange juice. Cheese naturally contains small amounts of vitamin D.
Includes lean meats, poultry, fish, beans, eggs, and nuts.
Fish such as salmon, tuna, and mackerel are very good sources of vitamin D. Small amounts of vitamin D are also found in beef liver and egg yolks.
Is low in saturated fats, trans fats, cholesterol, salt (sodium), and added sugars.
Vitamin D is added to some margarines.
Stays within your daily calorie needs.
For more information about building a healthful diet, refer to the Dietary Guidelines for Americans (http://www.health.gov/dietaryguidelines/dga2005/document/default.htm) and the U.S. Department of Agriculture's food guidance system, My Pyramid (http://www.mypyramid.gov).
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Compston JE, Horton LW. Oral 25-hydroxyvitamin D3 in treatment of osteomalacia associated with ileal resection and cholestyramine therapy. Gastroenterology 1978;74:900-2. [PubMed abstract]
Gough H, Goggin T, Bissessar A, Baker M, Crowley M, Callaghan N. A comparative study of the relative influence of different anticonvulsant drugs, UV exposure and diet on vitamin D and calcium metabolism in outpatients with epilepsy. Q J Med 1986;59:569-77. [PubMed abstract]
Disclaimer
Reasonable care has been taken in preparing this document and the information provided herein is believed to be accurate. However, this information is not intended to constitute an "authoritative statement" under Food and Drug Administration rules and regulations.
About ODS
The mission of the Office of Dietary Supplements (ODS) is to strengthen knowledge and understanding of dietary supplements by evaluating scientific information, stimulating and supporting research, disseminating research results, and educating the public to foster an enhanced quality of life and health for the U.S. population.
General Safety Advisory
Health professionals and consumers need credible information to make thoughtful decisions about eating a healthful diet and using vitamin and mineral supplements. These Fact Sheets provide responsible information about the role of vitamins and minerals in health and disease. Each Fact Sheet in this series received extensive review by recognized experts from the academic and research communities.
The information is not intended to be a substitute for professional medical advice. It is important to seek the advice of a physician about any medical condition or symptom. It is also important to seek the advice of a physician, registered dietitian, pharmacist, or other qualified health professional about the appropriateness of taking dietary supplements and their potential interactions with medications.
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Document Last Updated: 11/13/2009
Office of Dietary Supplements
National Institutes of Health
Bethesda, Maryland 20892 USA
Web: http://ods.od.nih.gov
E-mail: ods@nih.gov
Call my office to set up an appointment or email me 815-476-5210 or jones.gretchen@gmail.com
Monday, January 11, 2010
20 Super Foods You Need to Build Muscle & Lose Fat
To build muscle & lose fat, you need a variety of proteins, veggies, fruits, carbs, and healthy fats. Eating protein helps building & maintaining muscle. But it also helps fat loss: protein has a higher thermic effect than carbs/fats.
Eating fats also helps fat loss: your body holds fat if you don’t eat fats. Fruits & veggies contain vitamins & minerals, necessary for recovery from your workouts. And carbs fuel your muscles so you feel full of energy at the gym.
Lots of you struggle to get these foods. Sometimes because you’re too busy or sometimes because you just lack information. This list will help you — 20 super foods you need to build muscle & lose fat.
1. Whole Eggs. Cheap & rich source of protein: 7g/egg. The yolk contains most nutrients: half the protein, vitamins A/D/E and cholesterol to naturally increase your testosterone levels.
Don’t worry about cholesterol in eggs. Dietary cholesterol isn’t bound to blood cholesterol. Read this, this, this & this. If you have bad cholesterol, lower your body fat rather than throwing the yolk away.
2. Fish Oil. Reduces inflammation (joints/skin), lowers body fat and increases testosterone levels. You need 9000mg EPA/DHA per day. Since you’ll probably struggle to get that from eating fatty fish, consider a fish oil supplement.
3. Wild Salmon. One of the best sources of omega-3 fatty acids that also gets you 20g protein per 100g serving. Farm raised salmon is, however, omega-3 deficient: it’s corn/grain fed. Go with wild salmon.
4. Berries. Strong antioxidants that prevent cancer, heart & eye diseases. Any kind works: cranberries, raspberries, blackberries, blueberries, etc. Buy fresh or frozen berries and mix with oatmeal.
5. Yogurt. Contain bacteria that improve your gastrointestinal health. Don’t buy frozen yogurt or yogurt with added sugar and fruits at the bottom. Get plain low fat yogurt. Eat it with berries & flax seeds.
6. Flax Seeds. Source of fiber, protein & omega-3. Grind the flax seeds to get the most out of them. Take 1 tbsp with yogurt & berries before going to bed. Stay away from flax oil: it’s unstable and contains no fiber.
7. Extra Virgin Olive Oil. 70% monounsaturated fats that protect against heart diseases and cancer. Add 1-2 tbsp olive oil to your salads. Buy Extra Virgin Olive Oil: it contains more polyphenols and tastes better.
8. Mixed Nuts. Contain mono- & polyunsaturated fats, proteins, fiber, vitamin E, zinc, potassium, magnesium, etc. Mixed nuts are caloric dense, great if you’re a skinny guy who wants to gain weight.
Anything works: almonds, walnuts, cashews, hazelnuts, … Peanut butter also works as long as you buy natural peanut butter without added salts/sugars.
Image credit: Inside_man
9. Red Meat. Protein, vitamin B12, heme iron, zinc, creatine, carnosine and even omega-3 if you eat grass-fed beef. Eat steaks & hamburgers from top round or sirloin. Read Dr. Lonnie Lowery’s article on Meat.
10. Broccoli. High in cancer-fighting phytochemicals and anti-estrogenic indoles. Broccoli is also high in soluble fiber and low calorie, helping fat loss. Eat other cruciferous vegetables for a change: cabbage, bok choy, cauliflower, kale, …
11. Spinach. One of the most alkaline foods. Spinach prevents muscle & bone loss, but also cancer and heart diseases because of its high nutrient profile. Try one of the spinach recipes I shared a while back.
12. Turkey. If you don’t believe saturated fat is good for you, try white turkey. The leanest beef has about 4.5g saturated fat/100g, while white turkey has close to 0g (that why it’s so dry). Eat turkey with spinach & quinoa.
13. Quinoa. South American “king of grains”. Quinoa is higher in fiber & protein than rice or oats, tastes a lot better and is gluten free. Buy the whiter grain, it’s better quality. Eat it post workout with meat & spinach.
14. Oats. Reduce cholesterol, provide you with low-gi carbs for energy, and high in soluble fiber. Try this post workout shake of whey & oats.
15. Tomatoes. High in lycopene, which prevents cancer. The lycopene in tomato paste is 4 times more bioavailable than in fresh tomatoes. Have pizza or pasta with tomato sauce & olive oil post strength training.
16. Oranges. Vitamin C to fight diseases, magnesium to lower blood pressure, anti-oxidant beta-carotenes, etc. Quit drinking processed orange juice which often has added sugars. Eat oranges or make your own orange juice.
17. Apples. Pectin in apples helps weight loss by increasing satiety. Apples are also the strongest antioxidiant after cranberries (eat the peels). Unfortunately apples are one of the most pesticide-contaminated fruits. Go organic.
18. Carrots. Their huge vitamin A content improves eye-health, especially night vision. Carrots are also rich in fiber, low calorie and taste good, even raw.
19. Water. Your body holds water if you don’t drink enough. Drinking prevents water retention, helps muscle recovery and prevents dehydration from strength training. Get a brita filter and drink 2 cups of water with each meal.
20. Green Tea. Strong antioxidant and natural diuretic. Green tea also speeds up fat loss, prevents cancer and improves blood sugar & circulation. Drink green tea in the morning instead of coffee. Real green tea, not the teabags.
Putting it All Together. Eat proteins, veggies, fruits & fats every 3 hours. 2 cups water with each meal. Carbs post workout only. Junk food 10% of the time. Get stronger in the meanwhile and you’ll build muscle & lose fat.
Eating fats also helps fat loss: your body holds fat if you don’t eat fats. Fruits & veggies contain vitamins & minerals, necessary for recovery from your workouts. And carbs fuel your muscles so you feel full of energy at the gym.
Lots of you struggle to get these foods. Sometimes because you’re too busy or sometimes because you just lack information. This list will help you — 20 super foods you need to build muscle & lose fat.
1. Whole Eggs. Cheap & rich source of protein: 7g/egg. The yolk contains most nutrients: half the protein, vitamins A/D/E and cholesterol to naturally increase your testosterone levels.
Don’t worry about cholesterol in eggs. Dietary cholesterol isn’t bound to blood cholesterol. Read this, this, this & this. If you have bad cholesterol, lower your body fat rather than throwing the yolk away.
2. Fish Oil. Reduces inflammation (joints/skin), lowers body fat and increases testosterone levels. You need 9000mg EPA/DHA per day. Since you’ll probably struggle to get that from eating fatty fish, consider a fish oil supplement.
3. Wild Salmon. One of the best sources of omega-3 fatty acids that also gets you 20g protein per 100g serving. Farm raised salmon is, however, omega-3 deficient: it’s corn/grain fed. Go with wild salmon.
4. Berries. Strong antioxidants that prevent cancer, heart & eye diseases. Any kind works: cranberries, raspberries, blackberries, blueberries, etc. Buy fresh or frozen berries and mix with oatmeal.
5. Yogurt. Contain bacteria that improve your gastrointestinal health. Don’t buy frozen yogurt or yogurt with added sugar and fruits at the bottom. Get plain low fat yogurt. Eat it with berries & flax seeds.
6. Flax Seeds. Source of fiber, protein & omega-3. Grind the flax seeds to get the most out of them. Take 1 tbsp with yogurt & berries before going to bed. Stay away from flax oil: it’s unstable and contains no fiber.
7. Extra Virgin Olive Oil. 70% monounsaturated fats that protect against heart diseases and cancer. Add 1-2 tbsp olive oil to your salads. Buy Extra Virgin Olive Oil: it contains more polyphenols and tastes better.
8. Mixed Nuts. Contain mono- & polyunsaturated fats, proteins, fiber, vitamin E, zinc, potassium, magnesium, etc. Mixed nuts are caloric dense, great if you’re a skinny guy who wants to gain weight.
Anything works: almonds, walnuts, cashews, hazelnuts, … Peanut butter also works as long as you buy natural peanut butter without added salts/sugars.
Image credit: Inside_man
9. Red Meat. Protein, vitamin B12, heme iron, zinc, creatine, carnosine and even omega-3 if you eat grass-fed beef. Eat steaks & hamburgers from top round or sirloin. Read Dr. Lonnie Lowery’s article on Meat.
10. Broccoli. High in cancer-fighting phytochemicals and anti-estrogenic indoles. Broccoli is also high in soluble fiber and low calorie, helping fat loss. Eat other cruciferous vegetables for a change: cabbage, bok choy, cauliflower, kale, …
11. Spinach. One of the most alkaline foods. Spinach prevents muscle & bone loss, but also cancer and heart diseases because of its high nutrient profile. Try one of the spinach recipes I shared a while back.
12. Turkey. If you don’t believe saturated fat is good for you, try white turkey. The leanest beef has about 4.5g saturated fat/100g, while white turkey has close to 0g (that why it’s so dry). Eat turkey with spinach & quinoa.
13. Quinoa. South American “king of grains”. Quinoa is higher in fiber & protein than rice or oats, tastes a lot better and is gluten free. Buy the whiter grain, it’s better quality. Eat it post workout with meat & spinach.
14. Oats. Reduce cholesterol, provide you with low-gi carbs for energy, and high in soluble fiber. Try this post workout shake of whey & oats.
15. Tomatoes. High in lycopene, which prevents cancer. The lycopene in tomato paste is 4 times more bioavailable than in fresh tomatoes. Have pizza or pasta with tomato sauce & olive oil post strength training.
16. Oranges. Vitamin C to fight diseases, magnesium to lower blood pressure, anti-oxidant beta-carotenes, etc. Quit drinking processed orange juice which often has added sugars. Eat oranges or make your own orange juice.
17. Apples. Pectin in apples helps weight loss by increasing satiety. Apples are also the strongest antioxidiant after cranberries (eat the peels). Unfortunately apples are one of the most pesticide-contaminated fruits. Go organic.
18. Carrots. Their huge vitamin A content improves eye-health, especially night vision. Carrots are also rich in fiber, low calorie and taste good, even raw.
19. Water. Your body holds water if you don’t drink enough. Drinking prevents water retention, helps muscle recovery and prevents dehydration from strength training. Get a brita filter and drink 2 cups of water with each meal.
20. Green Tea. Strong antioxidant and natural diuretic. Green tea also speeds up fat loss, prevents cancer and improves blood sugar & circulation. Drink green tea in the morning instead of coffee. Real green tea, not the teabags.
Putting it All Together. Eat proteins, veggies, fruits & fats every 3 hours. 2 cups water with each meal. Carbs post workout only. Junk food 10% of the time. Get stronger in the meanwhile and you’ll build muscle & lose fat.
Sunday, January 10, 2010
This is why Wyeth is Out of Business! Let's Get Smarter and Change The Standard of Care
Connie Barton, then a medical office assistant in Peoria, Ill., was one woman who responded to such messages. She says she took Prempro, a hormone drug made by Wyeth, from 1997, when she was 53, until 2002, when she received a diagnosis of breast cancer. As part of her cancer treatment, she had a mastectomy to remove her left breast. Now Ms. Barton, who said in an interview that she used Prempro in part because her doctor told her it could help prevent heart disease and dementia, is one of more than 13,000 people who have sued Wyeth over the last seven years, claiming in courts across the country that its menopause drugs caused breast cancer and other problems. The suits also assert, based on recently unsealed court documents, that Wyeth oversold the benefits of menopausal hormones and failed to properly warn of the risks.
In October, a jury in a Pennsylvania state court awarded Ms. Barton $75 million in punitive damages from Wyeth on top of compensatory damages of $3.75 million. The drug giant Pfizer, which absorbed Wyeth and its hormone drugs in a merger this year, says that Prempro is a safe, federally approved drug that did not cause Ms. Barton’s breast cancer. Chris Loder, a Pfizer spokesman, says Wyeth acted responsibly by including a clear warning about a breast cancer risk on Prempro labels and by updating the warning as new evidence emerged.
Mr. Loder also notes that Pfizer plans to appeal every product-liability case on menopausal drugs it loses, including Ms. Barton’s. While Wyeth has faced periodic complaints about its blockbuster menopause drugs, the latest lawsuits have turned the company’s menopausal hormone franchise into the kind of case study dissected at Ivy League business schools. Lawyers have made some documents public in the suits, and The New York Times and the nonprofit Public Library of Science filed successful motions to unseal thousands of documents in July.
To be sure, even some doctors who think hormone therapy has risks say it is the most effective treatment for symptoms directly associated with menopause. The documents that have surfaced in the Wyeth cases offer a rare glimpse inside the file cabinets and hard drives of a major drug company. And the cases demonstrate the importance of litigation in detailing exactly how drug makers operate their businesses, says Dr. Jerome L. Avorn, a professor of medicine at Harvard Medical School who has written about the subject in The Journal of the American Medical Association.
“The information coming out in litigation helps us understand how a belief in a ‘protective benefit’ of estrogens on the heart was able to spread like wildfire through the medical community,” says Dr. Avorn, who is not involved in the Wyeth litigation. “Thousands of doctors prescribed the drugs for millions of women on that basis,” he says, adding that studies later contradicted the belief. “It will be very interesting to see whether the courts are able to connect the dots and make it clear whether this was a kind of medical ventriloquism on Wyeth’s part.”
In October, a jury in a Pennsylvania state court awarded Ms. Barton $75 million in punitive damages from Wyeth on top of compensatory damages of $3.75 million. The drug giant Pfizer, which absorbed Wyeth and its hormone drugs in a merger this year, says that Prempro is a safe, federally approved drug that did not cause Ms. Barton’s breast cancer. Chris Loder, a Pfizer spokesman, says Wyeth acted responsibly by including a clear warning about a breast cancer risk on Prempro labels and by updating the warning as new evidence emerged.
Mr. Loder also notes that Pfizer plans to appeal every product-liability case on menopausal drugs it loses, including Ms. Barton’s. While Wyeth has faced periodic complaints about its blockbuster menopause drugs, the latest lawsuits have turned the company’s menopausal hormone franchise into the kind of case study dissected at Ivy League business schools. Lawyers have made some documents public in the suits, and The New York Times and the nonprofit Public Library of Science filed successful motions to unseal thousands of documents in July.
To be sure, even some doctors who think hormone therapy has risks say it is the most effective treatment for symptoms directly associated with menopause. The documents that have surfaced in the Wyeth cases offer a rare glimpse inside the file cabinets and hard drives of a major drug company. And the cases demonstrate the importance of litigation in detailing exactly how drug makers operate their businesses, says Dr. Jerome L. Avorn, a professor of medicine at Harvard Medical School who has written about the subject in The Journal of the American Medical Association.
“The information coming out in litigation helps us understand how a belief in a ‘protective benefit’ of estrogens on the heart was able to spread like wildfire through the medical community,” says Dr. Avorn, who is not involved in the Wyeth litigation. “Thousands of doctors prescribed the drugs for millions of women on that basis,” he says, adding that studies later contradicted the belief. “It will be very interesting to see whether the courts are able to connect the dots and make it clear whether this was a kind of medical ventriloquism on Wyeth’s part.”
Chemosensitivity Tests – Why Does Big Pharma Know About Them and WE Don’t?
By Suzanne Somers:
After a show at ShopNBC, my family took me out to dinner for my birthday at a fancy restaurant in Minneapolis, called The Kitchen (spectacular, by the way!). A man at the table across from us started by buying two very nice bottles of wine for our table. By the end of the evening, he decided to buy the entire dinner! I went to his table to thank him. Turns out he owns a pharmaceutical company (that explains the extravagant gift!). He was a very nice man and went on to tell me his wife had recently died of cancer. We started talking about my book, KNOCKOUT: Interviews with Doctors Who Are Curing Cancer and How to Prevent Getting it in the First Place. When the subject of chemosensitivity tests came up, he mentioned his wife had one during the course of her treatment, even still she could not be saved.
While the owner of a big pharmaceutical company knew the term and asked for this test for his own wife, the term “chemosensitivity test” would fail to be recognized by most Americans. However, this concept is well known in other parts of the world. For instance, in Germany, chemosensitivity tests are routinely conducted in order to determine which type of chemo should be utilized for a specific cancer patient. In KNOCKOUT, Dr. James Forsythe explains that in both Germany and Greece, specialists begin by harvesting the cancer cells out of the patient’s blood. They then break down the cells genetically in order to discover which markers are compatible with treatment of the tumor. From this, they can tell which drugs would be most effective for the particular cancer, which ones would be ineffective, or harmful. Once the correct type of chemo has been determined, Dr. Forsythe uses an integrative treatment, with far lower doses of chemo (10-20% of the norm), far fewer side effects, and much better results.
We are all aware that the purpose of chemo is to kill cancer cells, but that it also kills our healthy cells along the way. With the right fit, the correct chemo can target and kill cancer cells so that at least when we are choosing to add this poison into our systems we know it will do its intended job. Dr. Forsythe illustrates the impact of this testing by sharing one of his patient’s stories. He begins, “I had a patient from Sacramento who six months ago had been on a heavy-duty chemo protocol called FOL-FOX (containing oxaliplatin, 5FU, and Avastin). We found out from the German chemosensitivity test that two out of the three of those drugs were completely ineffective against his cancer cells. I switched him over to a sensitive drug and he’s now out playing golf three days a week and his liver has cleared up completely on recent follow-up scans” (KNOCKOUT, p.128).
If these tests could help us to take less chemo, or a better chemo for our specific cancer, why wouldn’t we ALL be given these tests? Experts say it’s too long of a process and too much trouble, so they make the best guess possible and hope it works. Dr. Robert Nagourney in Long Beach, California, and Larry Weisenthal in Huntington Beach, California, are the only two American doctors who run these tests. Otherwise, we don’t bother to go through this step of chemotherapy sensitivity testing before administering a poison that could be completely ineffective and damaging to our immune system. I wasn’t even told this testing was an option for me in either of my two diagnoses. Why not? Why not find out if at least there is a shot that the chemo being administered will have any effect? I suspect the reason is that if this poison doesn’t fit, someone will lose the revenue.
I have also learned about this major issue through my friend, Farrah Fawcett’s experience. She underwent two courses of excruciating, debilitating, immune-system-ruining chemotherapy for anal cancer – only to have the cancer return in three months. Then she traveled to Germany and was told upon doing a chemosensitivity test that the chemo she had been administered in our country had been completely ineffective. A waste of time. Useless. All it did was seriously degrade her health. Perhaps this explains Bill Faloon’s thought process when he says, “The second biggest killer in America is medical ignorance and it is the number one reason people die” (KNOCKOUT, p. 254).
Now that I realize chemosensitivity tests exist, it feels unconscionable that chemotherapy would ever, ever be administered without testing first to find out if the chemo is even compatible with the specific cancer. Big Pharma knows about these tests… and the man who bought my birthday dinner insisted for his own wife. Why doesn’t everyone have access to the same knowledge and treatment?
If you would like to find out more about chemosensitivity testing, read KNOCKOUT or consult the following resources:
Biofocus Institute for Laboratory Medicine
Dr. med Dipl. Chem. Doris Bachg
Dr. med Uwe Haselhorst
Berghauser Str. 295
45659 Recklinghausen, Germany
Contact: Dr. Lothar Prix
+49 2361-3000-130
+49 2361-3000-169 (fax)
Email: prix@biofocus.de
Research Genetic Cancer Centre (R.G.C.C.)
P.O. 53070 Florina, Greece
+30-24630-42264
+30-24630-42265 (fax)
E-mail: jpapasot@doctors.org.uk
After a show at ShopNBC, my family took me out to dinner for my birthday at a fancy restaurant in Minneapolis, called The Kitchen (spectacular, by the way!). A man at the table across from us started by buying two very nice bottles of wine for our table. By the end of the evening, he decided to buy the entire dinner! I went to his table to thank him. Turns out he owns a pharmaceutical company (that explains the extravagant gift!). He was a very nice man and went on to tell me his wife had recently died of cancer. We started talking about my book, KNOCKOUT: Interviews with Doctors Who Are Curing Cancer and How to Prevent Getting it in the First Place. When the subject of chemosensitivity tests came up, he mentioned his wife had one during the course of her treatment, even still she could not be saved.
While the owner of a big pharmaceutical company knew the term and asked for this test for his own wife, the term “chemosensitivity test” would fail to be recognized by most Americans. However, this concept is well known in other parts of the world. For instance, in Germany, chemosensitivity tests are routinely conducted in order to determine which type of chemo should be utilized for a specific cancer patient. In KNOCKOUT, Dr. James Forsythe explains that in both Germany and Greece, specialists begin by harvesting the cancer cells out of the patient’s blood. They then break down the cells genetically in order to discover which markers are compatible with treatment of the tumor. From this, they can tell which drugs would be most effective for the particular cancer, which ones would be ineffective, or harmful. Once the correct type of chemo has been determined, Dr. Forsythe uses an integrative treatment, with far lower doses of chemo (10-20% of the norm), far fewer side effects, and much better results.
We are all aware that the purpose of chemo is to kill cancer cells, but that it also kills our healthy cells along the way. With the right fit, the correct chemo can target and kill cancer cells so that at least when we are choosing to add this poison into our systems we know it will do its intended job. Dr. Forsythe illustrates the impact of this testing by sharing one of his patient’s stories. He begins, “I had a patient from Sacramento who six months ago had been on a heavy-duty chemo protocol called FOL-FOX (containing oxaliplatin, 5FU, and Avastin). We found out from the German chemosensitivity test that two out of the three of those drugs were completely ineffective against his cancer cells. I switched him over to a sensitive drug and he’s now out playing golf three days a week and his liver has cleared up completely on recent follow-up scans” (KNOCKOUT, p.128).
If these tests could help us to take less chemo, or a better chemo for our specific cancer, why wouldn’t we ALL be given these tests? Experts say it’s too long of a process and too much trouble, so they make the best guess possible and hope it works. Dr. Robert Nagourney in Long Beach, California, and Larry Weisenthal in Huntington Beach, California, are the only two American doctors who run these tests. Otherwise, we don’t bother to go through this step of chemotherapy sensitivity testing before administering a poison that could be completely ineffective and damaging to our immune system. I wasn’t even told this testing was an option for me in either of my two diagnoses. Why not? Why not find out if at least there is a shot that the chemo being administered will have any effect? I suspect the reason is that if this poison doesn’t fit, someone will lose the revenue.
I have also learned about this major issue through my friend, Farrah Fawcett’s experience. She underwent two courses of excruciating, debilitating, immune-system-ruining chemotherapy for anal cancer – only to have the cancer return in three months. Then she traveled to Germany and was told upon doing a chemosensitivity test that the chemo she had been administered in our country had been completely ineffective. A waste of time. Useless. All it did was seriously degrade her health. Perhaps this explains Bill Faloon’s thought process when he says, “The second biggest killer in America is medical ignorance and it is the number one reason people die” (KNOCKOUT, p. 254).
Now that I realize chemosensitivity tests exist, it feels unconscionable that chemotherapy would ever, ever be administered without testing first to find out if the chemo is even compatible with the specific cancer. Big Pharma knows about these tests… and the man who bought my birthday dinner insisted for his own wife. Why doesn’t everyone have access to the same knowledge and treatment?
If you would like to find out more about chemosensitivity testing, read KNOCKOUT or consult the following resources:
Biofocus Institute for Laboratory Medicine
Dr. med Dipl. Chem. Doris Bachg
Dr. med Uwe Haselhorst
Berghauser Str. 295
45659 Recklinghausen, Germany
Contact: Dr. Lothar Prix
+49 2361-3000-130
+49 2361-3000-169 (fax)
Email: prix@biofocus.de
Research Genetic Cancer Centre (R.G.C.C.)
P.O. 53070 Florina, Greece
+30-24630-42264
+30-24630-42265 (fax)
E-mail: jpapasot@doctors.org.uk
PREMPRO IS NOT A HORMONE ANY WOMAN SHOULD BE TAKING
PREMPRO is a combination of Premarin, an estrogen drug derived from the urine of pregnant mares and first approved by the Food and Drug Administration in 1942, with an additional hormone, progestin. Part of the Premarin saga shows how a drug maker successfully and cannily expanded a franchise whose central ingredient is horse estrogens into a billion-dollar panacea for aging women. Yet several hundred pages of court documents also raise questions about another aspect of Premarin’s trajectory: how Wyeth worked over decades to maintain the image and credibility of its hormone drugs even as the products were repeatedly under siege.
BY the mid-1990s, after a few studies had reported a protective effect of hormone drugs on the heart, Wyeth had begun to reposition menopausal hormone therapy as a preventive health choice that could help inhibit heart disease and other maladies, according to court documents.
That marketing strategy coincided with the introduction of Wyeth’s new combination hormone drug Prempro, which included a progestin hormone to keep estrogen from causing excessive cell growth in the uterine lining.
In one commercial from a Wyeth research institute, the model Lauren Hutton runs down a beach and warns of the health risks of estrogen loss.
“My doctor said if you don’t replace estrogen that you lose at menopause, your risk for certain age-related diseases could increase,” Ms. Hutton said in the commercial. In a voice-over, a narrator told viewers about studies looking into the connections between menopause and heart disease, memory loss and sight loss. This is all true if you replace hormones with actual hormones, not synthetically and chemically changed hormones.
“Believe me,” Ms. Hutton said, “the time to protect your future is now.”
Sally Beatty, a spokeswoman for Pfizer, said this was a “help seeking” ad, of the type encouraged by the F.D.A. She added that the promotion did not mention any specific drugs, not did it suggest that drugs could cure the ailments described.
The labels for Premarin and Prempro at the time said the drugs were approved to treat moderate to severe symptoms of menopause like hot flashes, night sweats and vaginal dryness and to prevent osteoporosis.
But Wyeth also positioned its menopausal hormone drugs as having larger protective benefits, court documents show.
Wyeth used proxies to promote a wide range of health benefits from hormone therapy, paying millions of dollars to influential doctors and medical groups and helping them develop abstracts for medical conferences and articles for medical journals, according to court documents.
The company also paid $12 million to sponsor continuing medical education programs from 2002 through 2006 at the University of Wisconsin, Madison. The programs, including an assertion that the Women’s Health Initiative and another heart-risk study “miss the mark on quality of life,” reached thousands of doctors.
Doctors were aware in the 1990s that hormone therapy could increase a woman’s risk of breast cancer, says Dr. Carol Bates, the director of the primary care program at Beth Israel Deaconess Medical Center in Boston.
But based on the results of observational studies that had been published, many physicians, herself included, believed that the drugs’ ostensible ability to reduce heart attacks and perhaps Alzheimer’s would outweigh a breast cancer risk, she says.
“In the 1990s, there was actually tremendous pressure to put women on hormone therapy, and it came from a good place,” Dr. Bates says. “But it was taken a bit to the extreme.”
HORMONE therapy — aimed at the symptoms it effectively treats and with full disclosure about its possible risks — has many advocates. Dr. Lynne T. Shuster, the director of the women’s health clinic at the Mayo Clinic in Rochester, Minn., says such regimens can be very worthwhile for treating hot flashes, night sweats and vaginal dryness associated with menopause.
And some users agree.
Irene Fisher, a kitchen and bath designer in Baldwin, N.Y., says she has been taking Prempro for 16 years to control hot flashes and night sweats.
“I always feel good when I take it,” she says. The benefits are worth a small risk, Ms. Fisher says, adding that she has an annual mammogram to check for breast cancer and that “I think you have to know your own body.”
But many women were not so fully informed in the 1990s.
In 1996, for example, a federal study reported that breast cancer risk may have been “substantially underestimated.” Wyeth reacted with plans to dismiss it as “just one more paper,” and try to “overshadow” it by directing journalists to other studies, according to documents cited in the court of appeals decision in Missouri.
In 1996, for example, a federal study reported that breast cancer risk may have been “substantially underestimated.” Wyeth reacted with plans to dismiss it as “just one more paper,” and try to “overshadow” it by directing journalists to other studies, according to documents cited in the court of appeals decision in Missouri.
In 1997, Wyeth began working with DesignWrite, a company in Princeton, N.J., that is paid by drug makers to develop manuscripts for publication in medical journals. The specific objective of a publication plan for Premarin was to “increase physician awareness on the multitude of benefits that hormone replacement therapy provides” and “diminish the negative perceptions associated with estrogens and cancer,” according to a 1997 DesignWrite proposal prepared for Wyeth.
Over the next decade, Wyeth paid DesignWrite to prepare at least 60 articles for publication in medical journals on the potential benefits of hormone therapy for cardiovascular disease, Alzheimer’s disease, diabetes, colon cancer, vision loss and other health problems, the court documents show.
In response to an e-mail query, Michael Platt, president of DesignWrite, wrote that the articles were all medically and scientifically accurate and valid and peer reviewed. But Wyeth’s and DesignWrite’s effort hit an obstacle in 2002 when researchers reported the results of the Women’s Health Initiative.
In 2002, researchers halted the largest clinical trial ever conducted of women’s health because participants who took certain combined hormones had an increased risk of breast cancer — as well as a higher risk of heart attack, stroke and blood clots in the lungs — compared with those taking a placebo. Other parts of the same federal study, called the Women’s Health Initiative, later found that hormone drugs increased the risk of dementia in a subset of participants, those age 65 and older. Sales of Wyeth’s hormone drugs peaked at about $2 billion in 2001, but after results of the 2002 study came out sales plummeted. Because these drugs were not bioidentical hormones and do not behave the same when taken orally and are chemical mistakes of the actual hormone.
The National Institutes of Health ultimately decided to start using the term “menopausal hormone therapy” instead of “hormone replacement therapy,” says Marcia L. Stefanick, a professor of medicine at the Stanford University medical school who was principal investigator on the Women’s Health Initiative study at her institution.
While the drugs are effective at treating symptoms like hot flashes, she says, the word “replacement” implies that women are getting hormones "replaced" which is not the case with drugs like Premarin or Prempro.
In 2003 Wyeth added a “black box” warning to the label saying Prempro should not be prescribed to prevent cardiovascular disease. The same year, the F.D.A. approved a lower dose version of Prempro so women would have more options.
Dr. Adriane Fugh-Berman, an associate professor at the medical school of Georgetown University, considers both Premarin and Prempro examples of drugs that gained widespread popularity before science had established the full extent of their risks.
“Where there has always been a push is where there isn’t data,” says Dr. Fugh-Berman, who has been a paid expert witness for plaintiffs in the hormone litigation.
BY the mid-1990s, after a few studies had reported a protective effect of hormone drugs on the heart, Wyeth had begun to reposition menopausal hormone therapy as a preventive health choice that could help inhibit heart disease and other maladies, according to court documents.
That marketing strategy coincided with the introduction of Wyeth’s new combination hormone drug Prempro, which included a progestin hormone to keep estrogen from causing excessive cell growth in the uterine lining.
In one commercial from a Wyeth research institute, the model Lauren Hutton runs down a beach and warns of the health risks of estrogen loss.
“My doctor said if you don’t replace estrogen that you lose at menopause, your risk for certain age-related diseases could increase,” Ms. Hutton said in the commercial. In a voice-over, a narrator told viewers about studies looking into the connections between menopause and heart disease, memory loss and sight loss. This is all true if you replace hormones with actual hormones, not synthetically and chemically changed hormones.
“Believe me,” Ms. Hutton said, “the time to protect your future is now.”
Sally Beatty, a spokeswoman for Pfizer, said this was a “help seeking” ad, of the type encouraged by the F.D.A. She added that the promotion did not mention any specific drugs, not did it suggest that drugs could cure the ailments described.
The labels for Premarin and Prempro at the time said the drugs were approved to treat moderate to severe symptoms of menopause like hot flashes, night sweats and vaginal dryness and to prevent osteoporosis.
But Wyeth also positioned its menopausal hormone drugs as having larger protective benefits, court documents show.
Wyeth used proxies to promote a wide range of health benefits from hormone therapy, paying millions of dollars to influential doctors and medical groups and helping them develop abstracts for medical conferences and articles for medical journals, according to court documents.
The company also paid $12 million to sponsor continuing medical education programs from 2002 through 2006 at the University of Wisconsin, Madison. The programs, including an assertion that the Women’s Health Initiative and another heart-risk study “miss the mark on quality of life,” reached thousands of doctors.
Doctors were aware in the 1990s that hormone therapy could increase a woman’s risk of breast cancer, says Dr. Carol Bates, the director of the primary care program at Beth Israel Deaconess Medical Center in Boston.
But based on the results of observational studies that had been published, many physicians, herself included, believed that the drugs’ ostensible ability to reduce heart attacks and perhaps Alzheimer’s would outweigh a breast cancer risk, she says.
“In the 1990s, there was actually tremendous pressure to put women on hormone therapy, and it came from a good place,” Dr. Bates says. “But it was taken a bit to the extreme.”
HORMONE therapy — aimed at the symptoms it effectively treats and with full disclosure about its possible risks — has many advocates. Dr. Lynne T. Shuster, the director of the women’s health clinic at the Mayo Clinic in Rochester, Minn., says such regimens can be very worthwhile for treating hot flashes, night sweats and vaginal dryness associated with menopause.
And some users agree.
Irene Fisher, a kitchen and bath designer in Baldwin, N.Y., says she has been taking Prempro for 16 years to control hot flashes and night sweats.
“I always feel good when I take it,” she says. The benefits are worth a small risk, Ms. Fisher says, adding that she has an annual mammogram to check for breast cancer and that “I think you have to know your own body.”
But many women were not so fully informed in the 1990s.
In 1996, for example, a federal study reported that breast cancer risk may have been “substantially underestimated.” Wyeth reacted with plans to dismiss it as “just one more paper,” and try to “overshadow” it by directing journalists to other studies, according to documents cited in the court of appeals decision in Missouri.
In 1996, for example, a federal study reported that breast cancer risk may have been “substantially underestimated.” Wyeth reacted with plans to dismiss it as “just one more paper,” and try to “overshadow” it by directing journalists to other studies, according to documents cited in the court of appeals decision in Missouri.
In 1997, Wyeth began working with DesignWrite, a company in Princeton, N.J., that is paid by drug makers to develop manuscripts for publication in medical journals. The specific objective of a publication plan for Premarin was to “increase physician awareness on the multitude of benefits that hormone replacement therapy provides” and “diminish the negative perceptions associated with estrogens and cancer,” according to a 1997 DesignWrite proposal prepared for Wyeth.
Over the next decade, Wyeth paid DesignWrite to prepare at least 60 articles for publication in medical journals on the potential benefits of hormone therapy for cardiovascular disease, Alzheimer’s disease, diabetes, colon cancer, vision loss and other health problems, the court documents show.
In response to an e-mail query, Michael Platt, president of DesignWrite, wrote that the articles were all medically and scientifically accurate and valid and peer reviewed. But Wyeth’s and DesignWrite’s effort hit an obstacle in 2002 when researchers reported the results of the Women’s Health Initiative.
In 2002, researchers halted the largest clinical trial ever conducted of women’s health because participants who took certain combined hormones had an increased risk of breast cancer — as well as a higher risk of heart attack, stroke and blood clots in the lungs — compared with those taking a placebo. Other parts of the same federal study, called the Women’s Health Initiative, later found that hormone drugs increased the risk of dementia in a subset of participants, those age 65 and older. Sales of Wyeth’s hormone drugs peaked at about $2 billion in 2001, but after results of the 2002 study came out sales plummeted. Because these drugs were not bioidentical hormones and do not behave the same when taken orally and are chemical mistakes of the actual hormone.
The National Institutes of Health ultimately decided to start using the term “menopausal hormone therapy” instead of “hormone replacement therapy,” says Marcia L. Stefanick, a professor of medicine at the Stanford University medical school who was principal investigator on the Women’s Health Initiative study at her institution.
While the drugs are effective at treating symptoms like hot flashes, she says, the word “replacement” implies that women are getting hormones "replaced" which is not the case with drugs like Premarin or Prempro.
In 2003 Wyeth added a “black box” warning to the label saying Prempro should not be prescribed to prevent cardiovascular disease. The same year, the F.D.A. approved a lower dose version of Prempro so women would have more options.
Dr. Adriane Fugh-Berman, an associate professor at the medical school of Georgetown University, considers both Premarin and Prempro examples of drugs that gained widespread popularity before science had established the full extent of their risks.
“Where there has always been a push is where there isn’t data,” says Dr. Fugh-Berman, who has been a paid expert witness for plaintiffs in the hormone litigation.
Reader Survey: Will the USPSTF Breast Cancer Screening Recommendations change what you do?
Clinical Guidelines
Screening for Breast Cancer: U.S. Preventive Services Task Force Recommendation Statement
From the U.S. Preventive Services Task Force, Agency for Healthcare Research and Quality, Rockville, Maryland.
Description: Update of the 2002 U.S. Preventive Services Task Force (USPSTF) recommendation statement on screening for breast cancer in the general population.
Methods: The USPSTF examined the evidence on the efficacy of 5 screening modalities in reducing mortality from breast cancer: film mammography, clinical breast examination, breast self-examination, digital mammography, and magnetic resonance imaging in order to update the 2002 recommendation. To accomplish this update, the USPSTF commissioned 2 studies: 1) a targeted systematic evidence review of 6 selected questions relating to benefits and harms of screening, and 2) a decision analysis that used population modeling techniques to compare the expected health outcomes and resource requirements of starting and ending mammography screening at different ages and using annual versus biennial screening intervals.
Recommendations: The USPSTF recommends against routine screening mammography in women aged 40 to 49 years. The decision to start regular, biennial screening mammography before the age of 50 years should be an individual one and take into account patient context, including the patient's values regarding specific benefits and harms. (Grade C recommendation)
The USPSTF recommends biennial screening mammography for women between the ages of 50 and 74 years. (Grade B recommendation)
The USPSTF concludes that the current evidence is insufficient to assess the additional benefits and harms of screening mammography in women 75 years or older. (I statement)
The USPSTF concludes that the current evidence is insufficient to assess the additional benefits and harms of clinical breast examination beyond screening mammography in women 40 years or older. (I statement)
The USPSTF recommends against clinicians teaching women how to perform breast self-examination. (Grade D recommendation)
The USPSTF concludes that the current evidence is insufficient to assess additional benefits and harms of either digital mammography or magnetic resonance imaging instead of film mammography as screening modalities for breast cancer. (I statement)
The U.S. Preventive Services Task Force (USPSTF) makes recommendations about preventive care services for patients without recognized signs or symptoms of the target condition.
It bases its recommendations on a systematic review of the evidence of the benefits and harms and an assessment of the net benefit of the service.
The USPSTF recognizes that clinical or policy decisions involve more considerations than this body of evidence alone. Clinicians and policymakers should understand the evidence but individualize decision making to the specific patient or situation.
Previous SectionNext SectionSummary of Recommendations and Evidence
The USPSTF recommends against routine screening mammography in women aged 40 to 49 years. The decision to start regular, biennial screening mammography before the age of 50 years should be an individual one and take patient context into account, including the patient's values regarding specific benefits and harms. This is a C recommendation.
The USPSTF recommends biennial screening mammography for women aged 50 to 74 years. This is a B recommendation.
The USPSTF concludes that the current evidence is insufficient to assess the additional benefits and harms of screening mammography in women 75 years or older. This is an I statement.
The USPSTF recommends against teaching breast self-examination (BSE). This is a D recommendation.
The USPSTF concludes that the current evidence is insufficient to assess the additional benefits and harms of clinical breast examination (CBE) beyond screening mammography in women 40 years or older. This is an I statement.
The USPSTF concludes that the current evidence is insufficient to assess the additional benefits and harms of either digital mammography or magnetic resonance imaging (MRI) instead of film mammography as screening modalities for breast cancer.
For a summary of the evidence systematically reviewed in making these recommendations, the full recommendation statement, and supporting documents, please go to www.preventiveservices.ahrq.gov
Screening for Breast Cancer: U.S. Preventive Services Task Force Recommendation Statement
From the U.S. Preventive Services Task Force, Agency for Healthcare Research and Quality, Rockville, Maryland.
Description: Update of the 2002 U.S. Preventive Services Task Force (USPSTF) recommendation statement on screening for breast cancer in the general population.
Methods: The USPSTF examined the evidence on the efficacy of 5 screening modalities in reducing mortality from breast cancer: film mammography, clinical breast examination, breast self-examination, digital mammography, and magnetic resonance imaging in order to update the 2002 recommendation. To accomplish this update, the USPSTF commissioned 2 studies: 1) a targeted systematic evidence review of 6 selected questions relating to benefits and harms of screening, and 2) a decision analysis that used population modeling techniques to compare the expected health outcomes and resource requirements of starting and ending mammography screening at different ages and using annual versus biennial screening intervals.
Recommendations: The USPSTF recommends against routine screening mammography in women aged 40 to 49 years. The decision to start regular, biennial screening mammography before the age of 50 years should be an individual one and take into account patient context, including the patient's values regarding specific benefits and harms. (Grade C recommendation)
The USPSTF recommends biennial screening mammography for women between the ages of 50 and 74 years. (Grade B recommendation)
The USPSTF concludes that the current evidence is insufficient to assess the additional benefits and harms of screening mammography in women 75 years or older. (I statement)
The USPSTF concludes that the current evidence is insufficient to assess the additional benefits and harms of clinical breast examination beyond screening mammography in women 40 years or older. (I statement)
The USPSTF recommends against clinicians teaching women how to perform breast self-examination. (Grade D recommendation)
The USPSTF concludes that the current evidence is insufficient to assess additional benefits and harms of either digital mammography or magnetic resonance imaging instead of film mammography as screening modalities for breast cancer. (I statement)
The U.S. Preventive Services Task Force (USPSTF) makes recommendations about preventive care services for patients without recognized signs or symptoms of the target condition.
It bases its recommendations on a systematic review of the evidence of the benefits and harms and an assessment of the net benefit of the service.
The USPSTF recognizes that clinical or policy decisions involve more considerations than this body of evidence alone. Clinicians and policymakers should understand the evidence but individualize decision making to the specific patient or situation.
Previous SectionNext SectionSummary of Recommendations and Evidence
The USPSTF recommends against routine screening mammography in women aged 40 to 49 years. The decision to start regular, biennial screening mammography before the age of 50 years should be an individual one and take patient context into account, including the patient's values regarding specific benefits and harms. This is a C recommendation.
The USPSTF recommends biennial screening mammography for women aged 50 to 74 years. This is a B recommendation.
The USPSTF concludes that the current evidence is insufficient to assess the additional benefits and harms of screening mammography in women 75 years or older. This is an I statement.
The USPSTF recommends against teaching breast self-examination (BSE). This is a D recommendation.
The USPSTF concludes that the current evidence is insufficient to assess the additional benefits and harms of clinical breast examination (CBE) beyond screening mammography in women 40 years or older. This is an I statement.
The USPSTF concludes that the current evidence is insufficient to assess the additional benefits and harms of either digital mammography or magnetic resonance imaging (MRI) instead of film mammography as screening modalities for breast cancer.
For a summary of the evidence systematically reviewed in making these recommendations, the full recommendation statement, and supporting documents, please go to www.preventiveservices.ahrq.gov
Tuesday, December 1, 2009
"Lost without this incredible treatment!"
This is a recent email from a 47 yr old patient who has been on the Wiley Protocol since March 09. She had symptoms of migraine headaches, hot flashes, insomnia, and joint pains. She had not had a period since she stopped taking oral birth control pills in 2008.
Hi Gretchen,
I'm not sure how to handle this situation. I was on a cruise the last 8 days and I forgot the CREAM! I went into panic mode! I figured I would be able to get back on track some how but now I need your help. The last time I used it was on day 14, just in time for the progestrerone start. Now where do I start over again? Do I need to wait to start a cycle over or can I start back at day 1 today? Since my estrogen levels were low anyway maybe not using the progrestrone this cycle my body may not have missed it. (postitive thinking)
Believe it or not I started to get those awful hot flashes and sleep loss around day 20 and I think I'm in full menopause cycle again (I'm sure I'm not but that's just I feel). I arrived home yesterday (day 22) and immediately put on 4 lines of estrogren hoping this would help the hot flashes. I didn't realize that this treatment made me feel as good as I was feeling until it wasn't available. We really need to work on getting this available everywhere in the country so next time I forget the cream (which I will never forget again) I can get it!
Hope you had a great Thanksgiving! Can't wait to hear back from you. Hope I didn't mess up the cycles!
Lost without this incredible treatment!
Laura
Call my office to set up an appointment or email me 815-476-5210 or jones.gretchen@gmail.com
Hi Gretchen,
I'm not sure how to handle this situation. I was on a cruise the last 8 days and I forgot the CREAM! I went into panic mode! I figured I would be able to get back on track some how but now I need your help. The last time I used it was on day 14, just in time for the progestrerone start. Now where do I start over again? Do I need to wait to start a cycle over or can I start back at day 1 today? Since my estrogen levels were low anyway maybe not using the progrestrone this cycle my body may not have missed it. (postitive thinking)
Believe it or not I started to get those awful hot flashes and sleep loss around day 20 and I think I'm in full menopause cycle again (I'm sure I'm not but that's just I feel). I arrived home yesterday (day 22) and immediately put on 4 lines of estrogren hoping this would help the hot flashes. I didn't realize that this treatment made me feel as good as I was feeling until it wasn't available. We really need to work on getting this available everywhere in the country so next time I forget the cream (which I will never forget again) I can get it!
Hope you had a great Thanksgiving! Can't wait to hear back from you. Hope I didn't mess up the cycles!
Lost without this incredible treatment!
Laura
Call my office to set up an appointment or email me 815-476-5210 or jones.gretchen@gmail.com