Don’t Take Vitamin D Says New Study by Jeffrey Dach MD
A study proclaining Vitamin D is useless and you should just stop taking it was published in Lancet this week and “went viral”. The news story was picked up and amplified by the media Here it is:
“The take-away message is that there is little justification currently for prescribing vitamin D to prevent heart attack, stroke, cancer, or fractures in otherwise-healthy people living in the community,” says lead study author Dr. Mark Bolland, a researcher at the University of Auckland, New Zealand.
Randomized Controlled Trials vs Other types of Studies
A common gimmick used by Drug Company sponsored studies is to claim that only RCT (randomized trials) are to be included as “evidence”. The Bolland study selected 40 or so RCT studies to come to its conclusions, excluding all the basic science and observational studies. The problem with this is that there are thousands of observational studies that show health benefits for Vitamin D. A search for Vitamin D in Google Scholar yields 2.2 million published articles. Mark Bolland has excluded 99.9% of the available information on vitamin D to arrive at his conclusion that Vitamin D has no health benefits.
Michael Holick MD
Dr. Michael F Holick, a vitamin D expert and author of the Vitamin D Solution book, says this is just “silly”. He points out that many of the studies in Bolland’s Lancet paper used does of vitamin D that were too low to be effective.
Dr Mark Bolland is a New Zealand professor and expert on Vitamin D, Calcium and bone density. He has published many previous papers. One of his previous papers reported that women who take calcium tablets have an increase in cardiovascular risk, and heart attacks. Apparently the calcium can be deposited in the arterial walls causes atherosclerotic vascular disease and increased calcium score. I have written about this previously.
Another of his previous papers dealt with the deleterious effects of Vitamin D in patients with Sarcoidiosis, a form of lung disease in which non-caseating granulomas in the lung tissue manufacture excessive amounts of vitamin D resulting in hypercalcemia (high serum calcium), which if severe, may cause renal failure.
Vitamin D Deficiency, the Ignored Epidemic of the Developed World
Is it a New Drug, or is it Vitamin D?
What if I told you I discovered a new drug that could reduce the number of cancer deaths in the US by 43,000 annually, reduce colon cancer by 50%, and breast and ovarian cancer by 30%. Would you be impressed?
What if I then told you this same drug could safely prevent or alleviate the following medical conditions:(5a)
Type One Diabetes,
Polycystic Ovary Disease (PCOS),
Musculoskeletal and bone pain,
Inflammatory Bowel Disease (Crohn’s),
chronic lymphocytic leukemia (CLL)(15),
Improve calcium absorption and
Reduce hip fractures.(5A)
All of these health benefits can be obtained with Vitamin D3, an inexpensive vitamin, also obtained with sun exposure.
Vitamin D Deficiency in Florida, Surely You must Be Joking:
Everyone in Florida gets plenty of Vitamin D from sun exposure. This would be true except that as Floridians, we are all told to avoid the sun to prevent solar skin damage (brown wrinkling) and to avoid skin cancer.
So the question remains, do we get enough Vitamin D from sun exposure? To answer this question, we actually measured blood Vitamin D levels, and we were surprised to discover that the majority showed Vitamin D deficiency (less than 20 ng/ml), or insufficiency (less than 40 ng/ml).
What if you are not fortunate to live in sunny Florida and you live up north above the Mason Dixon Line, in Boston, New York, Chicago, Canada or Scandinavia? Northern latitudes have an even more serious vitamin D deficiency because of the lack of UV sunlight during the winter months. The angle of the sun through the atmosphere closes off the UltraViolet Light from reaching the earth.
An Epidemic of Vitamin D Deficiency
Vitamin D deficiency has been reported in 57% of 290 medical inpatients in Massachusetts, 93% of 150 patients with overt musculoskeletal pain in Minnesota, 48% of patients with Multiple Sclerosis, 50% of patients with lupus and fibromyalgia, 42% of healthy adolescents, 40% of African American Women, and 62 % of the morbidly obese, 83% of 360 patients with low back pain in Saudi Arabia, 73% of Austrian patients with Ankylosing Spondylitis, 58% of Japanese girls with Graves’s Disease, 40% of Chinese adolescent girls, 40-70% of all Finnish medical patients. (5a)
Vitamin D Toxicity
Vitamin D excess and toxicity requires daily dosage in excess of 40,000 units over a period of months, so 5,000 units a day is safe and far below the level needed to develop vitamin D toxicity. Remember Vitamin D is a fat soluble vitamin, so toxicity is possible with massive doses over long periods of time. Vitamin D toxicity causes elevated calcium levels. That’s why Vitamin D supplementation should done only under your physician’s supervision with monitoring of serum 25-Hydroxy Vitamin D levels.
Space Satellite Maps Maps of UV Sunlight
Space Satellite Maps Maps of UV Sunlight exposure correlate with incidence of Cancer and Multiple Sclerosis. If you take NASA space satellite photos of North America and color code the UV sunlight exposure as Dr. Grant has done on his web site, Sunarc.org (3), you will see a pattern remarkably similar to the incidence of cancer and multiple sclerosis. This is thought to be due to differences in Vitamin D levels. The farther north with less sun exposure and lower Vitamin D levels, there is an increased incidence of cancer and multiple sclerosis.
Diseases Caused By, or Associated With Vitamin D Deficiency:
Type One Diabetes,
PolyCystic Ovary Disease (PCOS),
Musculoskeletal and bone pain,
Chronic lymphocytic leukemia (CLL)(15).
The current recommendation for Vitamin D deficiency in those people who must avoid the sun is 5,000 IU of Vitamin D per day which costs 5 cents a day.. Vitamin D is not really a Vitamin, it is a Hormone. Like all other steroidal hormones, vitamin D is made from a cholesterol precursor, converted in the skin by sunlight. Like all other hormones, Vitamin D enters the nucleus of the cell and binds to the DNA where it gives a message to the DNA to manufacture proteins.
Image left: Vitamin D Chemical Structure Courtesy Wikipedia
Vitamin D And Multiple Sclerosis.
A review by Dr. Brown reported that Vitamin D supplementation prevented the development and progression of experimental autoimmune encephalitis, an animal model of MS, in mice. A large, prospective, cohort study found that vitamin D supplementation was associated with a 40% reduction in the risk of developing MS. Four small, noncontrolled studies suggested that vitamin D supplementation may decrease exacerbation of MS symptoms. (20) MRI studies of multiple sclerosis lesions show improvement during summer months and worsening during winter months suggesting a Vitamin D link. (36)
Vitamin D and Cancer
A four-year clinical trial, involving 1,200 women found those taking the vitamin had about a 60-per-cent reduction in cancer incidence, compared with those who didn’t take it, a drop so large — twice the impact on cancer attributed to smoking — it almost looks like a typographical error. The study was done by professor of medicine Robert Heaney of Creighton University in Nebraska and was published in June 2007. (36A)(36)
Vitamin D and Total Mortality
A 2007 meta-analysis review of 18 studies showed a reduction in all cause mortality of about 10% in people supplementing with commonly used doses of Vitamin D.(39)
Vitamin D Supplementation for Adults
The RDA in America is only 400 IU per day, yet current research suggests that our daily Vitamin D requirement is closer to 4,000 to 5,000 IU. Twenty minutes of Sun exposure will give us ten to twenty thousand IU of Vitamin D. Adult Supplementation with Carlson’s Cod Liver Oil can provide Vitamin D along with Vitamin A . However, for an intake of 5,000 IU vitamin D per day, inexpensive Vitamin D3 capsules are widely available for about 5 cents a day. We provide these as a convenience to our office patients. Vitamin D Testing at the Lab Optimal serum 25-hydroxyvitamin D values are 45-50 ng/ml. Below 40 ng/ml is called Vitamin D insufficiency, and below 20 ng/ml is deficiency.
Our health care system is in crisis. We are spending billions on expensive procedures like coronary artery bypass and organ transplantation, yet measurements of health are lower than other countries that spend less. In terms of getting more bang for your health care buck, Vitamin D testing and supplementation for the population is one solution which is guaranteed to improve overall health of the population at a ridiculously low cost. The cost saving in reduced cancer rates, and lower osteoporotic fracture rates would be enormous, and we would all enjoy improved health. My goal as a physician in our community is to improve the health of of our community, and Vitamin D testing and supplementation is one way to achieve that goal with no adverse side effects and enormous cost savings.
Articles with Related Interest:
Jeffrey Dach MD
7450 Griffin Road Suite 180/190
Davie, Florida 33316
Prospects for Vitamin D Nutrition. Vitamin D and Human Evolution Clinical relevance of higher vitamin D intakes, Toxicology of Vitamin D Reinhold Vieth, Pathology and Laboratory Medicine, Mount Sinai Hospital, and Laboratory Medicine and Pathobiology, University of Toronto Calgary AB, Oct 13 2005.
Highly recommended Web Cast video presentation on Vitamin D by Dr. Vieth
(2) http://articles.mercola.com/sites/articles/archive/2004/04/03/vitamin-d-grant.aspx Valuable Insights Into the Importance of Vitamin D and Sun on Mercola.com, Interview with William B. Grant, Ph.D.
Use of Vitamin D in Clinical Practice John Cannell Alternative Medicine Review 2008
(5a) VITAMIN D PARADIGM SHIFT lex Vasquez John Cannell ALTERNATIVE THERAPIES 2004 Full Text PDF
THE CLINICAL IMPORTANCE OF VITAMIN D (CHOLECALCIFEROL): A PARADIGM SHIFT WITH IMPLICATIONS FOR ALL HEALTHCARE PROVIDERS lex Vasquez, DC, ND, Gilbert Manso, MD, John Cannell, MD ALTERNATIVE THERAPIES, sept/oct 2004, VOL. 10, NO. 5 33
http://www.vitamindcouncil.org/ Vitamin D Council, John Cannell MD Web Site: Understanding Cholecalciferol Vitamin D
(6) http://www.vitamindcouncil.org/bestNewsArticles.shtml Listing of the best Vitamin D articles on the internet posted by John Cannell Vitamin D Council.
(9) http://www.medicalnewstoday.com/articles/24941.php Medical News Today. Healthcare Professionals Ignore Vitamin D Deficiency Epidemic by John Cannell MD
(10) http://articles.mercola.com/sites/articles/archive/2006/10/26/beware-of-most-prescription-vitamin-d-supplements.aspx Beware of prescription Vitamin D supplements, info from Mercola
(11) http://articles.mercola.com/sites/articles/archive/2004/02/28/vitamin-d-part-twenty.aspx Vitamin D Lowers inlfammation by John Cannell MD on Mercola.com
(12) http://lpi.oregonstate.edu/infocenter/vitamins/vitaminD/index.html Linus Paulng Institute on Vitamin D
(13) http://lpi.oregonstate.edu/infocenter/vitamins/vitaminD/drefs.html Linus Pauling Institute Vit D References with Links.
Vitamin D3 — Essential for Health June 15, 2004 by Chaya Venkat
The Flip Side of Sun Avoidance — Vitamin D Insufficiency
Blood. 2003 Apr 1;101(7):2454-60. Epub 2002 Nov 21.
The vitamin D3 analog EB1089 induces apoptosis via a p53-independent mechanism involving p38 MAP kinase activation and suppression of ERK activity in B-cell chronic lymphocytic leukemia cells in vitro.
Pepper C, Thomas A, Hoy T, Milligan D, Bentley P, Fegan C.
Department of Haematology, Llandough Hospital, Penarth, Vale of Glamorgan, United Kingdom.
EB1089, a novel vitamin D3 analog, has been shown to have cytotoxic and antiproliferative properties in a variety of malignant cells. However, its potential as a treatment for B-cell chronic lymphocytic leukemia (B-CLL) has not been evaluated. EB1089 induced apoptosis in all of the 102 B-CLL samples tested with a mean LD(50) (the concentration of EB1089 required to kill 50% of cells) value (+/- SD) of 2.1 x 10(-8) M (+/- 1.4 x 10(-8) M). Furthermore, no significant difference was found in the cytotoxicity of EB1089 in B-CLL samples from previously treated and untreated patients (P =.1637). Induction of apoptosis was associated with a reduction in Bcl-2 and Mcl-1 protein expression, but this was evident only in the apoptotic cells. In contrast, the expression of Bax, p21, and p53 was not altered in the viable or apoptotic cells from either B- or T-lymphocyte lineages. EB1089-induced apoptosis was preceded by activation of p38 mitogen-activated protein (MAP) kinase and suppression of extracellular signal-regulated kinase (ERK) activity, and this was associated with downstream activation of caspase-3. The pancaspase inhibitor (Z-VAD-FMK) and the caspase-9 inhibitor (Z-LEHD-FMK) were able to partially abrogate the apoptotic effects of EB1089 but did not affect the phosphorylation of p38 MAP kinase or the suppression of ERK. The B-CLL cells in the study were shown to highly express vitamin D receptor, but an additional receptor-independent mechanism of cell killing cannot be ruled out at this stage. These findings show that EB1089 is a potent apoptosis-inducing agent in B-CLL cells and may be useful in the treatment of B-CLL patients, particularly those with p53 mutations or drug-resistant disease.
(16) http://www.ajcn.org/cgi/content/full/69/5/842 Vieth, Reinhold. Vitamin D supplementation, 25-hydroxyvitamin D concentrations, and safety. American Journal of Clinical Nutrition, Vol. 69, No. 5, 842-856, May 1999
(17) http://cebp.aacrjournals.org/cgi/content/abstract/16/3/422 Vieth, Reinhold, Vitamin D and Reduced Risk of Breast Cancer: A Population-Based Case-Control Study. Cancer Epidemiology Biomarkers & Prevention 16, 422-429, March 1, 2007.
(18) http://www.ajcn.org/cgi/content/full/73/2/288 Veith R, Chan P-C R, MacFarlane G D. “Efficacy and safety of vitamin D3 intake exceeding the lowest adverse effect level.” Am J Clin Nutr 2001; 71: 288-294
(19) http://jama.ama-assn.org/cgi/content/abstract/296/23/2832 Munger, Levin,. Hollis, PhD Howard, Ascherio, Serum 25-Hydroxyvitamin D Levels and Risk of Multiple Sclerosis JAMA. 2006;296:2832-2838 Epidemiological and experimental evidence suggests that high levels of vitamin D, a potent immunomodulator, may decrease the risk of multiple sclerosis.
(20) http://www.theannals.com/cgi/content/abstract/40/6/1158 Brown, Sherrill J, The Role of Vitamin D in Multiple Sclerosis , DRUG INFORMATION ROUNDS, The Annals of Pharmacotherapy: Vol. 40, No. 6, pp. 1158-1161. DOI 10.1345/aph.1G513
(22) http://www.ajcn.org/cgi/content/full/79/3/362 Michael F Holick, Vitamin D: importance in the prevention of cancers, type 1 diabetes, heart disease, and osteoporosis American Journal of Clinical Nutrition, Vol. 79, No. 3, 362-371, March 2004
(23) http://www.ajcn.org/cgi/content/full/80/6/1678S Holick , Michael F VITAMIN D AND HEALTH IN THE 21ST CENTURY: BONE AND BEYOND, Sunlight and vitamin D for bone health and prevention of autoimmune diseases, cancers, and cardiovascular disease American Journal of Clinical Nutrition, Vol. 80, No. 6, 1678S-1688S, December 2004. Excellent full text article review.
(24) http://books.google.com/books?id=FvH7ySek6yAC&pg=PA3&lpg=PA3&dq=michael+f+holick+vitamin+d&source=web&ots= 4OzEEZCiX2&sig=pkZAqXRlKtNB-YtwdXxt2HfSXWI#PPR6,M1 Vitamin D Analogs in Cancer Prevention and Therapy By Jorg Reichrath, M. Friedrich,Chapter by Michael Holick Vitamin D in Book Online:
(25) http://jn.nutrition.org/cgi/content/abstract/130/11/2648 1,25-Dihydroxycholecalciferol Prevents and Ameliorates Symptoms of Experimental Murine Inflammatory Bowel Disease. Journal of Nutrition. 2000;130:2648-2652. Margherita T. Cantorna, Carey Munsick, Candace Bemiss and Brett D. Mahon
(26) http://jn.nutrition.org/cgi/content/full/135/11/2739S Holick, Michael F, The Influence of Vitamin D on Bone Health Across the Life Cycle, The Vitamin D Epidemic and its Health Consequences J. Nutr. 135:2739S-2748S, November 2005
(27) http://www.westonaprice.org/basicnutrition/vitamindmiracle.html The Miracle of Vitamin D by By Krispin Sullivan, CN on Weston Price Web Site.
(28) http://app2.capitalreach.com/esp1204/servlet/tc?cn=asbmr&c=10169&s=20343&e=6950 Webcasts : Contemporary Diagnosis and Treatment of Vitamin D-Related Disorders, American Society for Bone and Mineral Disorders.
(30) http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=151071 http://jn.nutrition.org/cgi/content/abstract/130/11/2648 Regulation of renin expression and blood pressure by vitamin D3 Curt D. Sigmund, J Clin Invest. 2002 July 15; 110(2): 155–156.
(31) http://www.ncbi.nlm.nih.gov/pubmed/11705562 Intake of vitamin D and risk of type 1 diabetes: a birth-cohort study. Lancet 2001; 358(9,292): 1,500-1,5003. Hypponen E, Laara E, Reunanen A, Jarvelin MR, Virtanen SM.
(32) http://www.ncbi.nlm.nih.gov/pubmed/12800453 The effect of vitamin D3 on insulin secretion and peripheral insulin sensitivity in type 2 diabetic patients. Int J Clin Pract 2003; 57(4): 258-61. Borissova AM, Tankova T, Kirilov G, Dakovska L, Kovacheva R.
(33) http://jcem.endojournals.org/cgi/content/full/86/4/1633 Pfeifer M et al. “Effects of a short-term vitamin D3 and calcium supplementation on blood pressure and parathyroid hormone levels in elderly women.” J Clin Endocrinol Metab 2001; 86: 1,633-1,637
(34) http://www.ncbi.nlm.nih.gov/pubmed/2643969 Lind L et al. “Reduction of blood pressure during long-term treatment with active vitamin D (alphacalcidol) is dependent on plasma renin activity and calcium status. A double-blind, placebo-controlled study.” Am J Hypertens 1989; 2: 20-25
(36) http://www.ncbi.nlm.nih.gov/pubmed/10939587 Embry AF, Snowdon LR, Vieth R.Ann Neurol. 2000 Aug;48(2):271-2. Vitamin D and seasonal fluctuations of gadolinium-enhancing magnetic resonance imaging lesions in multiple sclerosis.
(36A) http://www.theglobeandmail.com/servlet/story/ RTGAM.20070428.wxvitamin28/BNStory/specialScienceandHealth/home Vitamin D casts cancer prevention in new light by MARTIN MITTELSTAEDT, From Saturday’s Globe and Mail, April 28, 2007
(37) http://www.ajcn.org/cgi/content/abstract/85/6/1586 Vitamin D and calcium supplementation reduces cancer risk: results of a randomized trial American Journal of Clinical Nutrition, Vol. 85, No. 6, 1586-1591, June 2007 Joan M Lappe, Dianne Travers-Gustafson, K Michael Davies, Robert R Recker and Robert P Heaney.
(39) http://archinte.ama-assn.org/cgi/content/full/167/16/1730 Vitamin D Supplementation and Total Mortality A Meta-analysis of Randomized Controlled Trials Philippe Autier, MD; Sara Gandini, PhD Arch Intern Med. 2007;167:1730-1737. Conclusions Intake of ordinary doses of vitamin D supplements seems to be associated with decreases in total mortality rates.
(40) www.ajcn.org/cgi/content/abstract/85/6/1586 Vitamin D and calcium supplementation reduces cancer risk: results of a randomized trial. American Journal of Clinical Nutrition, Vol. 85, No. 6, 1586-1591, June 2007 Joan M Lappe, Dianne Travers-Gustafson, K Michael Davies, Robert R Recker and Robert P Heaney.
Vitamin D supplements won’t protect against disease in healthy adults, review says . By Ryan Jaslow CBS News January 24, 2014, 3: 31 PM “The take-away message is that there is little justification currently for prescribing vitamin D to prevent heart attack, stroke, cancer, or fractures in otherwise-healthy people living in the community,” lead study author Dr. Mark Bolland, a researcher at the University of Auckland, New Zealand. Researchers reviewed 40 scientifically rigorous studies that looked at whether taking vitamin D in supplement form would bring health benefits. The studies were called randomized controlled trials, which are considered the “gold standard” in research “The scientific term for it is ‘silly,'” ays Michael Holick, a professor of medicine at Boston University, told the paper. “There’s nothing new here.” Holick, who has written books promoting vitamin D use, says the analysis is flawed by the fact that most previous studies have used vitamin D doses that were too low, often 200 to 400 international units (IU) a day. Holick says there’s reason to believe higher doses, such as the 2,000 IU a day now being tested in one large U.S. trial, are needed to produce benefits.
Sarcoidosis Articles by Bolland
BMJ. 2008 Feb 2;336(7638):262-6. Epub 2008 Jan 15. Vascular events in healthy older women receiving calcium supplementation: randomised controlled trial. Bolland MJ, Barber PA, Doughty RN, Mason B, Horne A, Ames R, Gamble GD, Grey A, Reid IR. To determine the effect of calcium supplementation on myocardial infarction, stroke, and sudden death in healthy postmenopausal women. DESIGN:Randomised, placebo controlled trial. SETTING:Academic medical centre in an urban setting in New Zealand. PARTICIPANTS:1471 postmenopausal women (mean age 74): 732 were randomised to calcium supplementation and 739 to placebo. MAIN OUTCOME MEASURES: Adverse cardiovascular events over five years: death, sudden death, myocardial infarction, angina, other chest pain, stroke, transient ischaemic attack, and a composite end point of myocardial infarction, stroke, or sudden death. RESULTS: Myocardial infarction was more commonly reported in the calcium group than in the placebo group (45 events in 31 women v 19 events in 14 women, P=0.01). The composite end point of myocardial infarction, stroke, or sudden death was also more common in the calcium group (101 events in 69 women v 54 events in 42 women, P=0.008). After adjudication myocardial infarction remained more common in the calcium group (24 events in 21 women v 10 events in 10 women, relative risk 2.12, 95% confidence interval 1.01 to 4.47). For the composite end point 61 events were verified in 51 women in the calcium group and 36 events in 35 women in the placebo group (relative risk 1.47, 0.97 to 2.23). When unreported events were added from the national database of hospital admissions in New Zealand the relative risk of myocardial infarction was 1.49 (0.86 to 2.57) and that of the composite end point was 1.21 (0.84 to 1.74). The respective rate ratios were 1.67 (95% confidence intervals 0.98 to 2.87) and 1.43 (1.01 to 2.04); event rates: placebo 16.3/1000 person years, calcium 23.3/1000 person years. For stroke (including unreported events) the relative risk was 1.37 (0.83 to 2.28) and the rate ratio was 1.45 (0.88 to 2.49). CONCLUSION: Calcium supplementation in healthy postmenopausal women is associated with upward trends in cardiovascular event rates. This potentially detrimental effect should be balanced against the likely benefits of calcium on bone.
Vitamin D and Heart Attacks in Women
Sarcoidosis- Hypercalcemia from Vitamin D
Semin Respir Crit Care Med. 2010 Aug;31(4):474-84. doi: 10.1055/s-0030-1262215. Epub 2010 Jul 27. Calcium and vitamin D in sarcoidosis: how to assess and manage. Burke RR, Rybicki BA, Rao DS. The synthesis of vitamin D is altered by the granulomatous inflammation of sarcoidosis leading to increased production of 1, 25-dihydroxyvitamin D. Mounting evidence suggests that vitamin D is an immunomodulating hormone that inhibits both antigen presentation by cells of the innate immune system, and the cytokine release and proliferation of Th1 cells. These and other extraskeletal health benefits have led to an increase in vitamin D assessment and pharmacological supplementation in the general population. This review highlights the altered synthesis and general immunomodulating properties of vitamin D with a special emphasis on known interactions with sarcoidosis. In addition, the assessment of vitamin D nutritional status, its pharmacological supplementation, and the management of bone health in patients with sarcoidosis are reviewed.
free full text. Drug Des Devel Ther. 2013 Apr 12;7:325-38. Current and emerging pharmacological treatments for sarcoidosis: a review.Beegle SH, Barba K, Gobunsuy R, Judson MA. Author information Division of Pulmonary and Critical Care Medicine, Albany Medical College, Albany, NY 12208, USA.
Vitamin D Supplements’ Benefits Panned In Review Of Studies
Dr. Michael F. Holick on Vitamin D
Michael Holick, a professor of medicine at Boston University and advocate of vitamin D, disagrees with Bolland’s findings, saying that the studies on which Bolland based his study gave participants too low doses of vitamin D, about 200 to 400 international units (IU) per day. Holick says he believes a higher dose, such as 2,000 IU currently being administered in a major U.S. trial, would yield benefit. The vitamin D promoter also points out that Bolland neglects to explain the connection between low vitamin D levels in persons with chronic diseases (such as MS and colon cancer) and living in areas with little sun exposure.
Review of vitamin D studies finds little health benefit Jan. 24, 2014
The new review focuses only on randomized trials, in which people were assigned to take vitamin D or placebos and then followed to see if their health differed as a result. It did not include observational studies, in which researchers simply asked people about vitamin D intake or measured levels in their blood and then looked at their health differences.
Those observational studies have found a link between low vitamin D levels and diseases ranging from cancer to heart disease and diabetes.
The Vitamin D Debate, There’s been a lot of controversy lately about vitamin D recommendations. If you’re confused about how much you should be taking, you’re not alone.
Disclaimer: http://www.drdach.com/wst_page20.html The information contained here written by Jeffrey Dach MD is NOT intended to diagnose or treat any existing disease or ailment, or to replace in any way the patient /physican relationship with your own personal physician. Note that all contents of this message, including any advice, suggestions, and/or recommendations has NOT been generated as part of any professional evaluation. No patient has been examined prior to making these comments; no professional fee has been charged by or paid to myself. Regarding the nutritional supplements which may be mentioned: These have not been evaluated by the FDA and are not intended to treat disease. Any comments made about nutritional supplements are of a general nature and not intended to provide personal advice. The reader should seek the advice of a trusted health care professional regarding the use, risks, benefits, indications, and contra-indications of the various nutritional supplements which may be mentioned. Regarding FDA approved pharmaceutical drugs mentioned: Any comments made about drugs are of a general nature and not intended to provide personal advice. The reader should seek the advice of a trusted health care professional regarding the use, risks, benefits, indications, and contra-indications of drugs. The reader is advised to discuss the comments on these pages with his/her personal physicians and to only act upon the advice of his/her personal physician Also note that concerning an answer which appears as an electronically posted question, I am NOT creating a physician — patient relationship. Although identities will remain confidential as much as possible, as I can not control the media, I can not take responsibility for any breaches of confidentiality that may occur.