Toggle Health Problems and D

Doctors not yet convinced that Vitamin D Helps, trials with 20,000 participants underway - Feb 2015

Have to wait at least till 2020 for trial completion, and perhaps 2023 for trial publication

 Download the PDF from VitaminDWiki.

Doctors advised to wait 5+ years and let million suffer and/or die

Clipped from the PDF

When there is uncertainty about whether supplementation is warranted, the usual medical principle is to err on the side of caution and to avoid excess. Thus, while awaiting the results of the large trials now in progress, physicians would be well advised to follow current USPSTF and IOM recommendations and avoid overscreening and overprescribing supplemental vitaminD.

Note - to avoid excess does not apply for Vitamin D.
Many trials have shown no safety risk for even 10,000 IU of vitamin D

1000 IU of vitamin D (per kg) can indeed be toxic – 1947
10,000 IU vitamin D daily is safe, toxicity start at 150 ng (for monotherapy)– Jan 2013
As much as 10000 IU vitamin D is safe – review April 2012

Proof that Vitamin D Works at VitaminDWiki has the following summary table

Vitamin D prevents or treats 93 health problems
Surf to   is.gd/proofvitd   for updates or details
Select pink box in the upper right to select a language
Click on underlined items for details

Health Problem Treat
Reduction by Vit DRCT = Randomized Controlled Trial
   * = link to additional RCT
CT = Clinical Trial
149 to 142 mm Hg
HT risk reduced 10X
RCT*  *, 2400 IU.  100,000 IU*
When Vitamin D > 40 ng
Cardiovascular after attack T 32 % fewer deaths CT 1000 IU
Diabetes Type 1 P 85 % 12,000 kids, 2000 IU
Diabetes Type 2T 62 % RCT* CRP reduction, 4000 IU
Injection is far better - RCT *
RCT 50,000 IU/2weeks + probiotics
RCT 5,000 IU daily 6 months
Back Pain T 95 %
reduced 50%
5000/10000 IU
60,000 IU weekly
Influenza P 90 % RCT *, 2000 IU
Falls P 50%RCT, 100,000 IU monthly
RCT with Meals on Wheels 2016
Hip Fractures P 30 % RCT * 800 IU
Rickets P 98 % Turkey, 400 IU
NOT RCT, given to all children
Raynaud's Syndrome T 40 % RCT, visual scale, 20000 IU Avg
Menstrual pain P 76 % RCT, 7000 IU Avg,
70% reduction 2018
PMS reduced by half
Pregnancy risks P 50 % RCT, 4000 IU
C-section, unplanned P 50 % RCT, 4000 IU, small study
Low birth weight P 60 % RCT * 1000 IU of D2
TBP 60 % RCT, 800 IU
Breast Cancer P 60 % RCT, 1100 IU (2007)
Rheumatoid Arthritis pain T 40 % RCT, 500 IU, added to prescription
Cystic Fibrosis T 75 %
2nd study improved
RCT, pilot 4X fewer deaths 250,000 IU
RCT, pilot 8,200 IU
Chronic Kidney T 90 to 70 PTH RCT, 3500 IU,
Respiratory Tract Infection P 63 % 3 RCT, 4000 IU 1 year 2nd 2000/800 IU
20,000 IU weekly
Lupus T
zero flares
Pain reduced
Loading then 100,000 IU monthly,
RCT too
RCT 4,000 IU
Sickle Cell T Less pain
RCT, up to 100,000 IU/week
Leg ulcer healing T 4X faster RCT, 50,0000 IU/week, small study
Traumatic Brain Injury T 2X RCT, 20,0000 IU/day with progesterone
Parkinson's DiseaseT StabilizedRCT, 1200 IU/day
Multiple SclerosisP
95% were CURED
RCT, 7100 IU prevent pre-MS ==> MS
20,000 to 140,000 IU/day
Congestive Heart Failure T 90 % RCT, 1000 IU infants (also: Adults, not RCT)
Middle Ear Infection P 30 % RCT, 1000 IU infants
GingivitisT 88 %RCT, 2000 IU
Muscle in seniors T 17 % more muscle RCT, 4000 IU
Antibiotic use when >70y T 47 % RCT, 60,000 IU monthly
Infants tallerBenefit1 cm tall RCT, 50,000 IU weekly,
for 8 weeks while pregnant
Gestational Diabetes T Reduced 3X RCT, 2 doses of 50,000 IU
After Heart Attack T +6% ejection fraction RCT, 800,000 IU one time
Prostate Cancer T Fewer +cores RCT, 4000 IU (2012)
Asthma P   T Reduced symptoms RCT, 60K IU/month;
RCT 50K IU/week
Need good D at 4 weeks into preg.
Depression T Reduced RCT 300,000 IU injection
RCT 1500 IU helped Prozac
RCT 50,000 IU weekly, elderly
Low vitamin D
while breastfed
P All infants > 20 mg RCT, 5,000 IU
Fibromyalgia T Half of many still has FibroRCT, 30-48 ng
RCT 50K IU/week
Hives, Chronic T Reduced 40% RCT, 4000 IU added
CholesterolT Reduced 4 mg RCT, 400 IU + Ca
Weight Loss T lost 5 more lbs RCT, 2000 IU +diet +exercise
Gestational DiabetesP 40% RCT * , 5,000 IU
Chronic Obstructive
Pulmonary Disease
T 17X improvement CT, 50,000 IU weekly
RCT 100,000 IU monthly
Asthma T 1/2 Asthma attacks RCT >42 mg of vitamin D
Quality of Life (QoL) T Nursing Home QoL CT, 4,000 IU in daily bread
Death of Critically Ill
T 20% increase in survivability RCT 540 K IU loading than 90K monthly
Restless Leg Syndrome T Score 26 ==> 10 CT, Vitamin D dose size
not stated in abstract
Hepatitis-C T Aided normal drugs RCT 2.000 IU
Crohn's disease T improved when > 30 ng
2nd study fewer relapses
RCT 2,000 IU
10,000 IU RCT
Pre-term birth P 2.5X decrease, also: fewer
c-section & better Apgar
RCT 2,000 IU India
Cluster headaches T CH eliminated in 60% 10,000 IU, Mg, Omega-3, etc
Autism T 80% improved CT 300 IU/kg/day for 3 months
PreDiabetes T ~20% reduced RCT 60,000 IU/month
Weight loss:
Overweight and Obese
T 12 lbs in 6 months RCT 100,000 IU/month
Sarcopenia = muscle loss T 27% increase RCT 1,000 IU
Growing Pains T 60% decrease ~100,000 IU/month -NOT RCT
2nd study, similar results
Osteoarthritis pain T 60% decrease 50,000 IU/weekly - NOT RCT
ALS T helped 2,000 IU - NOT RCT, given to all
Vertigo T 3X reduction if raised > 10ng 600,000 IU load, then maint.
NOT RCT, given to all
Warts T 80% eliminated injection NOT RCT
60,000 IU/injection
Metabolic Syndrome P reduced 44% when VitD
increased by 30 ng
NOT RCT, given to all
Hay fever P reduced 48% RCT   1,000 IU for 30 days
Preeclampsia P Recurrance cut in half
3 RCT 3.6 X less likely if > 30 ng
50,000 IU every 2 weeks
4,000 IU daily
Blood cell cancer
Multiple Myeloma
T Survival 90% vs 50%10,000 IU/week
NOT RCT, given to all
Irritable Bowel Syndrome T Reduced3,000 IU spray RCT
Urinary Tract Infection P 50% reduction RCT 20,000 IU weekly
Mite Allergy P 5X reductionRCT 2,000 IU preg, 800 IU child
Perinatal depression
(depression near birth)
T 50% reduction RCT 2,000 IU for just a few weeks
Vaginosis T 10X reductionRCT 2,000 IU
Eczema T Reduced2 RCT 1,600 IU
Fatty Liver Disease
T Reduced RCT 20,000 IU weekly
Knee Osteoartiritis T Pain Reduced RCT 60,000 IU monthly after loading dose
Tuberculosis T Faster Recovery RCT single 450,000 IU dose
Stroke - Ischemic T Faster Recovery RCT single 600,000 IU injection
RCT single 300,000 IU injection
Sepsis T Reduce ICU and Hospital
length of stay by 7 days each
RCT 400,000 IU
Trauma deaths T 50% fewer deaths Vitamin D & Glutamine
NOT RCT, given to all
Hemodialysis patients T helped 50,000 IU weekly NOT RCT, given to all
Fatty liver - child T 2 X reduction RCT  Vitamin D & DHA
Fatigue T Reduced 100,000 IU single dose
NOT RCT, given to all
Sleep Disorders T Nicely treated RCT  50.000 IU bi-weekly
T RCT   Death rate cut in half300,000 IU injection
Infertile males T birth rate doubled RCT   300,000 IU + maint
Waist size T Waist size reduced 3 cm 100,000 IU loading + maint for 6 months
for those with Metabolic Syndrome
NOT RCT, given to all
Attention Deficient
Hyperactivity Disorder
T Reduced
RCT  3,000 IU for 12 weeks
RCT  50,000 IU weekly
Alcoholic liver cirrhosis T improved survival1,000 IU of vitamin D NOT RCT
Diabetic nephropathy T Reduced HOMA-IR, FRS RCT 50,000 IU weekly
Ulcerative Colitis T Reduced 60% RCT 50,000 IU nano daily for a week
Obese weight loss T Lost 3X more pounds $10 of Vitamin D added to
  calorie restriction & walking
Endometriosis T Nicely treated RCT  50.000 IU bi-weekly
Diabetic Wounds T 4X more likely to heal RCT  6,400 daily
Alzheimer's T Often reverseEach person gets a different amount of
Vit D, Omega-3, B12, Iron, etc
Autoimmune P Decrease 30% RCT  Vit D + Omega-3
Smoking T reduce problems RCT  50,000 bi-weekly

Many stories on the web reporting on this publication - such as

Comment by Dr. William Grant on PubMed

In their viewpoint piece, Vitamin D and clinical practice at a crossroads, Manson and Bassuk state among other things that the Institute of Medicine (IOM) set the recommended dietary allowance for vitamin D at 600 IU/d for those living in the upper latitudes of North America aged to 70 years and 800 IU/d for those older in order to reach a 25-hydroxyvitamin D [25(OH)D] concentration of 20 ng/mL (50 nmol/L) [1]. However, it is not clear how the Dietary Reference Intakes for Calcium and Vitamin D committee arrived at that number. For example, on p. 3-20 of the vitamin D and calcium IOM report [2], Figure 3-4 from Cashman et al. [3] is given as Figure 3-4, although without the 95% confidence intervals as in the original paper. The results were based on a 22-week placebo, randomized controlled supplementation study involving men and women aged 20-40 years. Inspection of Figure 2 in Ref. 3 indicates that it would take 1155 IU/d vitamin D3 for 97.5% of the 20-40 year old population sampled to reach 50 nmol/L. In a subsequent paper based on a systematic review and meta-analysis of vitamin D intake and 25(OH)D concentrations, the same group determined that it would take 930 IU/d vitamin D3 for people living in northern Europe to reach 50 nmol/L [4]. Further complicating matters is the fact that not all of the contributions from diet are accounted for in most studies. It is becoming apparent that some food such as meat has vitamin D in the form of 25(OH)D. Thus, vegans in the UK have 25(OH)D concentrations 20 nmol/L lower than omnivores [5], so require higher vitamin D intake from non-dietary sources or solar UVB exposure.

Their comment that "while awaiting the results of the large trials now in progress, physicians would be well advised to follow current USPSTF and IOM recommendations and avoid overscreening and overprescribing supplemental vitamin D" is also not well grounded. The IOM restricted its assessment of the benefits of vitamin D to vitamin D randomized controlled trials [RCTs] with substantial benefits by 2010. [ comment by VitaminDWiki - IOM data cutoff mid 2008] A number of trials since then demonstrated health benefits, e.g., for biomarkers of inflammation, where it was found that RCTs with baseline 25(OH)D concentrations below 48 nmol/L had a 50% chance of findings benefits from vitamin D supplementation compared to 25% with baseline 25(OH)D concentrations above 50 nmol/L [6]. In addition, ecological, observational, clinical, and laboratory studies have found many health benefits of solar UVB exposure and/or vitamin D. Since the IOM report was published (29 November, 2010), 13,535 publications with vitamin D in the title or abstract have been published at PubMed.gov as of 23 February, 2015, compared with 27,775 published before that date. Many of these publications strengthen the case for vitamin D supplementation and UVB exposure.

In terms of confounding factors related to observational studies, one not mentioned in Ref. 1 is the possibility that solar UV exposure may have health benefits in addition to vitamin D production. As a result, 25(OH)D concentrations may be an index of UVB exposure. Beneficial effects of UV exposure in addition to vitamin D production have been reported for intestinal cancer [7], multiple sclerosis [8], and blood pressure [9].

As for concern about adverse effects of higher 25(OH)D concentrations based on observational studies, it should be noted that most such studies do not obtain any information from participants about vitamin D supplementation prior to having 25(OH)D concentrations measured. Thus, those with adverse health outcomes and high 25(OH)D concentrations may have started taking vitamin D supplements shortly before blood draw. For example, studies of frailty vs. 25(OH)D concentration found a U-shaded relation for elderly women [10] but a linear inverse relation for elderly men [11]. Elderly women in the U.S. are much more likely to be advised to take vitamin D supplements than men, and starting to take vitamin D late in life cannot erase the adverse effects of years of low 25(OH)D concentrations. In addition, meta-analyses of observational studies of health outcomes with respect to 25(OH)D concentrations do not show U-shaped relations for cardiovascular disease [12] or all-cause mortality rates [13.

As to their comment regarding how interest in vitamin D could jeopardize ongoing vitamin D RCTs, that should not be the case if trial participants are screened by measuring 25(OH)D concentration prior to acceptance and including only those with 25(OH)D concentrations below 50 nmol/L then dropping any who are subsequently prescribed supplements in excess of the IOM recommendations. Over 99% of the population is not enrolled in vitamin D RCTs and should not be held hostage to ongoing or planned trials since there appear to be many health benefits and very few risks of vitamin D supplementation below 4000 IU/d [[14] even by the IOM's admission [2].


  • 1. Manson JE, Bassuk SS. Vitamin D research and clinical practice: at a crossroads. JAMA. 2015 Feb 19. doi: 10.1001/jama.2015.1353. [Epub ahead of print]
  • 2. Ross AC, Taylor CL, Yaktine AL, Del Valle HB, eds. ; Committee to Review Dietary Reference Intakes for Vitamin D and Calcium; Dietary Reference Intakes for Calcium and Vitamin D. Institute of Medicine. ISBN: 0-309-16395-1, 482 pages, (2010) Available from National Academies Press at: http://www.nap.edu/catalog/13050.html
  • 3. Cashman KD, Hill TR, Lucey AJ, et al. Estimation of the dietary requirement for vitamin D in healthy adults. Am J Clin Nutr. 2008;88(6):1535-42.
  • 4. Cashman KD, Fitzgerald AP, Kiely M, Seamans KM. A systematic review and meta-regression analysis of the vitamin D intake-serum 25-hydroxyvitamin D relationship to inform European recommendations. Br J Nutr. 2011;106(11):1638-48.
  • 5 Crowe FL, Steur M, Allen NE, et al. Plasma concentrations of 25-hydroxyvitamin D in meat eaters, fish eaters, vegetarians and vegans: results from the EPIC-Oxford study. Public Health Nutr. 2011;14(2):340-6.
  • 6. Cannell JJ, Grant WB, Holick MF. Vitamin D and inflammation. Dermato-Endocrinology. 2014;6(1):e983401-1-10.
  • 7. Rebel H, der Spek CD, Salvatori D, et al.UV exposure inhibits intestinal tumour growth and progression to malignancy in intestine-specific Apc mutant mice kept on low vitamin D diet. Int J Cancer. 2015;136(2):271-7.
  • 8. Zivadinov R, Treu CN, Weinstock-Guttman B, et al. Interdependence and contributions of sun exposure and vitamin D to MRI measures in multiple sclerosis. J Neurol Neurosurg Psychiatry. 2013;84(10):1075-81.
  • 9. Opländer C, Volkmar CM, Paunel-Görgülü A, et al. Whole body UVA irradiation lowers systemic blood pressure by release of nitric oxide from intracutaneous photolabile nitric oxide derivates. Circ Res. 2009;105(10):1031-40.
  • 10. Ensrud KE, Ewing SK, Fredman L, et al. Circulating 25-hydroxyvitamin D levels and frailty status in older women. J Clin Endocrinol Metab. 2010;95(12):5266-73.
  • 11. Ensrud KE, Blackwell TL, Cauley JA, et al. Circulating 25-hydroxyvitamin D levels and frailty in older men: the osteoporotic fractures in men study. J Am Geriatr Soc. 2011;59(1):101-6.
  • 12. Wang L, Song Y, Manson JE, et al. Circulating 25-hydroxy-vitamin D and risk of cardiovascular disease: A meta-analysis of prospective studies. Circ Cardiovasc Qual Outcomes. 2012;5(6):819-29.
  • 13. Garland CF, Kim JJ, Mohr SB, et al. Meta-analysis of all-cause mortality according to serum 25-hydroxyvitamin D. Am J Pub Health. 2014;104(8):e43-50.
  • 14. Vieth R. Implications for 25-hydroxyvitamin D testing of public health policies about the benefits and risks of vitamin D fortification and supplementation. Scand J Clin Lab Invest Suppl. 2012;243:144-53.

Disclosure I receive funding from Bio-Tech Pharmacal, Inc. (Fayetteville, AR), MediSun Technology (Highland Park, IL), and the Vitamin D Council (San Luis Obispo, CA).

Short url = http://is.gd/VITDRCT

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