See also Overview Meta-analysis of Vitamin D
Unfortunately, a meta-analysis will frequently fail to consider one or more of the following
- Dose size (Some gave the same importance to 40 IU as 10,000 IU)
- Dose frequency (Some ignore differences between daily, weekly, monthly, and annual dosing)
- Duration, (Some gave same importance to 4 weeks as 4 years)
It takes 3 to 12 months for vitamin D levels to come to a new plateau
and it often takes months for the body to then utilize it - Pre-existing Vitamin D blood level
adding vitamin D does not provide much benefit if person alrady has a good level - Cofactors (Most meta-analyses ignore the importance of Magnesium, Omega-3, Vitamin K2, etc)
- Type of Vitamin D - D3 far better than D2
- Those with poor guts need a different type of vitamin D
- Those who are Obese need 2.5 X more vitamin D
- Many drugs, such as statins deplete vitamin D or the Magnesium needed by Vitamin D
- For some health problems pulsed vitamin D, not daily, is far better (gets over possible Vitamin D receptor limitation)
See also Proof that Vitamin D Works
See also All items in category Intervention Vitamin DSee also Clinical Trials of vitamin D can have “biological flaws” – Jan 2015
See also Nice description of Meta-Analysis in Scientific American Jan 2014
See also The Misuse of Meta-analysis in Nutrition Research JAMA Sept 2017
". . . they have mixed apples and oranges—and sometimes “apples, lice, and killer whales”—yielding meaningless conclusions"
"In a 2007 review of 111 industry-funded (nutrition) studies, funding source was significantly related to study conclusions"
VitaminDWiki Comment on Scientific American article
It does not mention the major problems of Vitamin D Meta-analyses.
1) Dose sizes are ignored: Studies assume benefit from 400 IU is the same as for 4,000 IU
2) Durations are ignored: Studies assume benefit of 1 month dosing is the same as 1 year dosing
3) Existing Vitamin D levels are often ignored.
Studies ignore that a 20 ng addition to a 10 ng person has vastly more benefit than a 20 ng addition to a 40 ng person
A rare example of a good meta-analysis is: one on depression - April 2014
Really great medical studies do not blindly give a single supplement/drug to a group, but rather treat the patients as individuals and provide extra Magnesium, Vitamin K2, Omega-3, Vitamin C, etc as needed. These studies, which have the best results, are not Random Controlled Trials and are virtually never included in a meta-analysis.
Likewise, the trials which give vitamin D to an entire country, or to all of the patients (immoral not to do so) are never considered by any meta-analysis
Vitamin D has climbed the pyramid for decades, but has not yet reached the top
International prospective register of on-going systematic reviews: 569 reviews of Vitamin D as of March 2020
Intervention - Vitamin D includes the following:
Studies in VitaminDWiki
| Year | Randomized Controlled Trials | Interventions | Meta- analyses |
| 2022 | 900+ | 700+ | 600+ |
| 2017 | - | 48 | 52 |
| 2015 | 69 | 82 | 35 |
| 2012 | 41 | 38 | 39 |
Note: Govt recommendations in 2015 often ignored data after 2011
Table of contents
- Vitamin D has climbed the pyramid for decades, but has not yet reached the top
- International prospective register of on-going systematic reviews: 569 reviews of Vitamin D as of March 2020
- VitaminDWiki - Vitamin D meta-analyses for different health problems
- 20 Most-visited pages in Meta-analysis category in VitaminDWiki
- All of the articles in Meta-Analysis - sorted by date
VitaminDWiki - Vitamin D meta-analyses for different health problems
Number of Meta-analyses per health problem
ADHD7, Autism7, Autoimmune5, Back pain5, Bone -8, Breathing35, Cancer - Bladder5, Cancer - Breast24, Cancer - Colon25, Cancer - Liver4, Cancer - Lung7, Cancer - Lymphoma4, Cancer - Pancreatic4, Cancer - Prostate8, Cancer16, Cardiovascular38, Cognitive22, Depression16, Diabetes38, Falls and Fractures23, Fertility and sperm6, Genetics4, Gut9, Hypertension22, Infant-Child23, Inflammation11, Kidney12, Liver4, Metabolic Syndrome5, Mortality 28, Multiple Sclerosis13, Obesity8, Osteoarthritis4, Osteoporosis9, Pain - chronic5, Parkinson12, Pregnancy51, Psoriasis6, Rheumatoid Arthritis8, Seniors13, Skin8, Sleep4, Sports11, Stroke8, Thyroid and parathyroid5, Trauma and surgery19, Tuberculosis14, UV and Vitamin D4, Virus37, Vision6, Women7, Youth4
20 Most-visited pages in Meta-analysis category in VitaminDWiki
All of the articles in Meta-Analysis - sorted by date
- wiki page:
- Depression reduced by 8,000 IU of Vitamin D daily – meta-analysis Nov 2024
- Diabetes and Vitamin D meta-analyses - many studies
- Temporomandibular Disorders (superset of TMJ) - 3.8 X more likely to be vitamin D deficient – meta-analysis Oct 2024
- Weekly Vitamin D better than daily – lower cost, less pill burden, perhaps 1.5X better response – meta-analysis Oct 2024
- Body weight not reduced by small doses of calcitriol – meta-analysis Sept 2024
- T2 Diabetes and associated CVD problems fought by Vitamin D (weekly 50,000 IU) – Sept 2024
- COVID ICU use reduced by 42% if take more than 100,000 IU of vitamin D over two weeks – meta-analysis Sept 2024
- Athletic strength improved by Vitamin D – meta-analysis May 2024
- Stroke and Vitamin D meta-analyses - many studies
- Vaccinations did not stop COVID (68 studies) – meta-analysis May 2023
- Vitamin D reduces many Cardiovascular risk factors (provided doses are personalized) – meta-analysis July 2024
- Analysis of 280 Breast Cancer meta-analyses: having low vitamin D was highly suggestive – umbrella July 2024
- No increase in falls, fractures or all-cause mortality when Vitamin D is given monthly or less often– meta-analysis April 2024
- Influenza risk cut in half by the only trial giving enough vitamin D for body weight – meta-analysis Jan 2022
- Depression 1.6 X more likely if low Vitamin D, taking Vitamin D reduces depression – umbrella of meta-analyses – Jan 2023
- Multiple Vitamin D doses reduced COVID ICU by 2.5 X , Mech. Ventilation by 5.5 X – meta-analysis May 2024
- Overview of 8 Types of Supplementation Studies
- Pregnancy and offspring health - umbrella of 250,000 pregnancies - meta-analysis May 2024
- Getting more than 1,000 IU of Vitamin D cut in half childhood risk of influenza, coughs and fevers – Meta-analysis May 2024
- COVID death rate in hospital halved if take any amount of vitamin D for any length of time – meta-analysis May 2024
- Bladder cancer in muscles 2.7 times more-likely if vitamin D less than 20 ng -meta-analysis May 2024
- Women have conception problems when vitamin D levels are less than 24 ng – meta-analysis May 2024
- Adults with eating disorders consumed less than 400 IU of vitamin D – meta-analysis May 2024
- COVID and Vitamin D: 2X more likely to die if low, 2X more likely to survive if supplement – umbrella meta-analysis April 2024
- 100,000 IU of Vitamin D monthly (27 ng) is not enough to reduce fractures and falls – meta-analysis April 2024
- COVID fought by Vitamin D: 2.3X less likely to die of COVID if supplemented, 1.9 X less likely to become infected – meta-analysis March 2024
- 1.5X more likely to die of Prostate Cancer if low vitamin D when initially diagnosed – meta-analysis March 2024
- Vitamin D reduces: pre-eclampia 1.6 X, postpartum dep. 3.6 X, autism 1.5X etc. - meta-analysis March 2024
- Vitamin D supplementation decreased the risk of preeclampsia by 39% – meta-analysis Feb 2024
- Overactive bladder 4.4 X more likely if low vitamin D – meta-analysis Feb 2024
- Little Vitamin D does not reduce risk of CVD – RCT meta-analysis Dec 2023
- Early Childhood Caries 1.4 times more likely if 20-30 ng of Vitamin D – meta-analysis Jan 2024
- Vitamin D is the best Vitamin to prevent a stroke - meta-analysis Jan 2024
- Rickets risk reduced by more than 11 ng of Vitamin D - meta-analysis Jan 2024
- Multiple Sclerosis treatment not helped by small doses of vitamin D (yet again) – meta-analysis Jan 2024
- High-dose Vitamin D reduced inflammation and insulin resistance (obese children) - Dec 2023
- Small doses for a short time rarely help (Omega-3, post surgery this time) – meta-analysis Nov 2023
- Chronic Kidney not helped much by little vitamin D (none got to a 75 nmol level) – meta-analysis Sept 2023
- IBS - Vitamin D was the only micronutrient under DRV - meta-analysis Oct 2023
- Vitamin D3 is 40% better than D2 if normal weight, no difference if overweight –Meta-analysis October 2023
- Dental caries 1.22 X more likely if Vitamin D Deficient – meta-analysis Oct 2023
- 1.77 nmol response to 100 IU of Vitamin D (46 RCTs) – meta-analysis Sept 2023
- Vitamin D meta-analyses for different health problems
- Sepsis 2X-3X more likely if poor Vitamin D Receptor – meta-analysis Sept 2023
- Pancreatic Cancer survival 2.3 X more likely if good level of Vitamin D – meta-analysis Sept 2023
- Vitamin D given daily, weekly, or monthly has similar response (116 RCTs) – meta-analysis Aug 2023
- Knee Osteoarthritis treated by vitamin D if use more than 2,000 IU daily or non-daily high dose – meta-analysis Aug 2023
- Type 2 Diabetes treated by Vitamin D (often 50,000 IU weekly) – meta-analysis July 2023
- IBS reduced by 50,000 IU of Vitamin D (weekly or bi-weekly) – Meta-analysis July 2023
- COVID Vaccinations increased risk of cardiac deaths in youths by 19% - Aug 2023
- Vitamin D response independent of dosing interval – meta-analysis July 2023
- Alzheimer’s 1.6X more likely if vitamin D is less than 25 ng – meta-analysis July 2023
- Menstrual pain reduced by Vitamin D (50,000 weekly or 300,000 monthly) – meta-analyses
- Rheumatoid Arthritis pain is reduced by Vitamin D, high doses also reduced inflammation (CRP) – Meta-analysis July 2023
- Depression in seniors greatly reduced by Vitamin D (50,000 IU weekly) – meta-analysis June 2023
- T1 Diabetes increased by 27% by second year of COVID – meta-analysis June 2023
- Yet another reason to take Vitamin D while pregnant – fight COVID - meta-analysis May 2023
- Vitamin D-disease associations vary with the type of study – RCT, Observational, MR - July 2022
- Afib 40% less likely after heart by-pass if have enough Vitamin D – meta-analysis May 2023
- 16 factors increase the risk of early-onset colorectal cancer, only vitamin D decreases the risk – meta-analysis May 2023
- Melanoma is 1.4X more-likely if low Vitamin D – meta-analysis May 2023
- Breast Cancer not prevented by vitamin D when use small doses or for just a short time – Meta-analysis April 2023
- Indoor athletes have 4.5 ng less Vitamin D (Asia in this case) – meta-analysis April 2023
- Vitamin D during pregnancy increased child’s bone mineral density – meta-analysis April 2023
- COVID death 1.5 X less likely if high vitamin D, emergency D (50K to 100K) is great – meta-analysis March 2023
- Backpain relief – low evidence that drugs or NSAIDS help – Meta-analysis March 2023
- Breast Cancer risk - meta-analysis of 50 studies - Dec 2019
- Ovarian Cancer 37 percent less likely if high vitamin D – meta-analysis March 2023
- Eating Fish – 17 health benefits (Omega-3 and perhaps Vitamin D) – umbrella review Feb 2023
- Preeclampsia reduced by 33 percent if high vitamin D – meta-analysis Feb 2023
- Recurrent Stroke 5X more-likely if very low vitamin D - meta-analysis Feb 2023
- Infertile patients 1.7X more-likely to become pregnant if take Vitamin D – meta-analysis Feb 2023
- COVID ICU 3X less-likely if take any amount and type of Vitamin D – meta-analysis Jan 2023
- Childhood and youth obesity – more than 4,000 IU vitamin D average daily would help – meta-analysis Jan 2023
- Colorectal Cancer 10 percent more likely if poor Vitamin D Receptor – meta-analysis Jan 2023
- Depression reduced if take more than 5,000 IU of vitamin D daily – umbrella meta-analysis – Jan 2023
- Risk of heart failure increased 1.4X if low vitamin D – meta-analysis Dec 2022
- COVID and Vitamin D: any amount of D, at any time, for any duration reduced ICU - meta-analysis Dec 2022
- ICU Vitamin D supplementation not help (study ignored level achieved) – meta-analysis 2022
- Incidence Autism and ADHD reduced 18 percent per 10 ng of Vitamin D during pregnancy – meta-analysis Jan 2022
- Low vitamin D in Malaysia (85 percent less than 30 ng) – meta-analysis Nov 2022
- Some measures of metabolic syndrome are decreased by Vitamin D (may need Mg) – meta-analysis Oct 2022
- Small doses of Vitamin D do not reduce childhood breathing allergies – meta-analysis Oct 2022
- Inflammation markers reduced by Vitamin D - umbrella meta-analysis Oct 2022
- Maternal pregnancy problems if Vitamin D is less than 40 ng – meta-analysis Oct 2022
- Vitamin D reduces BMI and waist circumference – umbrella meta-analysis – Sept 2022
- Blood pressure reduced if take more than 4.5 grams of Omega-3 daily– umbrella meta-analysis Aug 2022
- IBD treated in children by Vitamin D, especially if use more than 2,000 IU daily for 12 weeks – meta-analysis – Sept 2022
- Meta-analyses of vitamin D, etc, sorted by associated category
- Worse COVID during 3Q pregnancy if 2.5 ng lower Vitamin D – meta-analysis Sept 2022
- Glycemic control of type 2 diabetes – only Vitamin D had high quality studies – meta-analysis Sept 2022
- Colorectal cancer 14 percent less likely if 10 ng more Vitamin D – 22nd meta-analysis – Sept 2022
- USPSTF says no evidence that Vitamins prevent CVD or Cancer (data disagrees) Aug 2022
- Ignoring dose size etc, meta-analysis concludes that Vitamin D does not help (stroke risk in this case) – Aug 2022
- CAD patients with low vitamin D were 1.6 X more likely to die – 27th meta-analysis Aug 2022
- Even after a Cancer diagnosis Vitamin D improves survival – meta-analysis Aug 2022
- Depression reduced if use more than 2,800 IU of vitamin D – meta-analysis Aug 2022
- Vitamin D fights many health problems – an umbrella review of 508 studies – July 2022
- Vitamin D fortification of food provides no bone benefit (typically a tiny amount of D) - meta-analysis July 2022
- Depression is treated by 2,000 IU of Vitamin D – 2 meta-analyses July 2022
- IBS helped by vitamin D (virtually ignoring dose size, type and duration) – meta-analysis June 2022
- Asthma treated by Vitamin D - 13th Meta-analysis – July 2022
- Severe COVID 2.6 X less likely if supplement with Vitamin D – 26th meta-analysis - July 2022
- COVID Long-Haul prevalence increases with time: 50% at 4 months - meta June 2022
- Miscarriage 1.6 X more likely if low vitamin D – meta-analysis May 2022
- Recurrent Miscarriage 4X more likely if low vitamin D – meta-analysis June 2022
- Vitamin D and the Critically Ill - meta-analysis – April 2022
- Omega-3 increases Vitamin D levels – Meta-analysis May 2022
- Muscle strength improved with Calfidediol (a form of vitamin D) - meta-analysis May 2022
- Magnesium fights diabetes (yet again)– meta-analysis Nov 2021
- High-dose Vitamin D safe for children (10,000 IU daily, 600,000 IU bolus) – meta-analysis April 2022
- Alzheimer’s patients have less Magnesium – meta-analysis Jan 2022
- BPH increased risk if poor Vitamin D Receptor in Asians – meta-analysis April 2022
- Pregnancy problems (LBW, PTB, SGA) associated with low vitamin D, 42nd meta-analysis – March 2022
- COPD treated by Vitamin D – meta-analysis March 2022
- Delirium or cognitive problems after surgery 1.5X more likely if low vitamin D –meta-analysis Aug 2022
- Sleep improved a bit by adding a bit of vitamin D – meta-anaysis March 2022
- Low Vitamin D associated with preeclampsia - meta-analysis Feb 2022
- Low Vitamin D associated with pre-eclampsia -40th meta-analysis – Feb 2022
- Small vitamin D doses while pregnant do not decrease infant allergies – meta-analysis Feb 2022
- Latent Tuberculosis 44 percent less likely if Vitamin D more than 30 ng - 14th meta-analysis Jan 2022
- COVID test positive is about half as likely if have Vitamin D – 24th meta-analysis - Jan 2022
- Small amounts of Vitamin D reduce Influenza risk by 22 percent (loading dose is far better) – meta-analysis Jan 2022
- Poor Vitamin D receptor reduced vitamin D levels -meta-analysis Jan 2022
- Melanoma might be suppressed by Vitamin D - many studies
- Vitamin D fights COVID (54 studies of 1,400,000 people) – 23rd meta-analysis - Dec 2021
- Anemia 1.6 X more likely during pregnancy if low Vitamin D – meta-analysis Dec 2021
- COVID-19 treated by Vitamin D (reduce ICU by 3X) - 22nd meta-analysis - Dec 29, 2021
- COVID-19 death increased 2X if low Vitamin D (less than 10 to less than 30 ng) – 21st meta-analysis Dec 2021
- Vitamin D reduces preeclampsia, gestational diabetes and hypertension - 38th meta-analysis Dec 2021
- Vitamin D loading doses quickly and safely raise levels – meta-analysis Dec 2021
- COVID-19 risk reduced by vitamin D supplementation – umbrella review of 7 meta-analysis – Oct 2021
- Need at least 6,000 IU daily while breastfeeding to eliminate Vitamin D deficiency – meta-analysis Oct 2021
- Colorectal cancer 40 percent less likely if 1000 IU more Vitamin D – 21st meta-analysis – Oct 2021
- Those with TB were 3.2 X more likely to have low vitamin D – 13th meta-analysis Sept 2021
- Recurrrent Cardiovascular deaths cut in half if 10 ng more Vitamin D – meta-analysis Sept 2021
- COVID-19 treated by Vitamin D (example: ICU reduced by 5X) – 20th meta-analysis Oct 13, 2021
- Severe COVID-19 2.5 X more likely if low vitamin D (23 studies) – 19th meta-analysis Oct 2021
- COVID-19 mortality extrapolates to zero at 50 ng of vitamin D – 18th Meta-analysis Sept 2021
- Vitamin D3 better than D2, especially if non-daily or high dose - meta-analysis Sept 2021
- COVID-19 death 1.6 X more likely if low vitamin D (24 studies) – 17th meta-analysis Aug 2021
- Asthma reduced by Vitamin D, even for those using corticosteroids - meta-analysis 2021
- Stroke 22 percent more likely if low Vitamin D – meta-analysis July 2021
- Severe COVID-19 5X more likely if low vitamin D (23 studies) – 16th meta-analysis July 2021
- Most Chinese have less than 20 ng level of Vitamin D - meta-analysis Aug 2021
- Statin pain reduces Vitamin D levels by 4 ng ( 9 studies) - Meta-analysis July 2021
- It appears that 40 percent of African-Caribbeans in the Caribbean have less than 30 ng of Vitamin D – meta-analysis July 2021
- Metabolic syndrome risk in children decreased 12 percent for each 10 ng increase in Vitamin D – meta-analysis July 2021
- Colorectal cancer 25 percent less likely if good level of Vitamin D – 20th meta-analysis – June 2021
- Severe COVID-19 3.5 more likely if low vitamin D (30 studies) – meta-analysis July 2021
- COVID-19 patients who had supplemented with Vitamin D were 3X less likely to enter ICU – June 2021
- Insulin Resistance is associated with low Vitamin D (both diabetic and non-diabetic) – meta-analysis May 2021
- Low back pain – 72 percent have low vitamin D – meta-analysis July 2018
- 2X higher risk of Alzheimer’s if poor Vitamin D Receptor – Meta-analysis June 2021
- Tuberculosis still associated with low vitamin D – 12th meta-analysis June 2021
- Diabetic Neuropathy 2.8X higher risk if low vitamin D – meta-analysis May 2021
- ICU mortality reduced by non-oral vitamin D – meta-analysis May 2021
- Hives (Urticaria) 7X more likely if vitamin D deficient, supplementation helps – meta-analysis April 2021
- Depression treated by 50K IU Vitamin D weekly (but not 1,000 IU daily) – meta-analysis Jan 2021
- Vitiligo associated with low vitamin D (Note: Vit. D and UV has treated it for over a decade) – meta-analysis March 2021
- Low Calcium associated with severe COVID-19 – several studies
- Metabolic Syndrome far less likely if high Vitamin D – 3 meta-analyses 2021
- Prediabetes 1.5 X more likely to go away if take Vitamin D – meta-analysis July 2020
- Vitamin D levels needed and importance - meta-analysis March 2021
- Small vitamin D doses provide small benefits for acute respiratory infections – Meta-analysis March 2021
- COVID-19 mortality 3X more likely if low vitamin D (999,179 people) – meta-analysis March 29, 2021
- COVID-19 was 2.6X more severe if very low Vitamin D (43 studies) – meta-analysis March 26, 2021
- Omega-3 improves elderly muscles – 2 meta-analyses
- Gestational diabetes risk reduced 1.5X by Vitamin D – meta-analysis March 2021
- Low Vitamin D associated with 2.7X more severe COVID-19 – 12th MA March 5, 2021
- Less obese child if supplemented with Vitamin D as an infant– meta-analysis Feb 2021
- Vitamin D supplementation fights COVID-19 – 11th meta-analysis Jan 24, 2021
- Respiratory Tract Infection risk reduced 2X by Vitamin D loading doses – meta-analysis Jan 2021
- Migraine headaches treated by Vitamin D – meta-analysis Jan 2021
- Sleep improved by Vitamin D, Melatonin, amino acids, etc. -Meta-analysis Jan 2021
- 3.7 X less likely to die of COVID-19 if supplemented with Vitamin D - meta-analysis Jan 5, 2021
- Less likely to test positive for COVID-19 if higher Vitamin D – meta-analysis Jan 6, 2021
- Vitamin D reduces COVID-19 by 80 percent - anonymous meta-analysis - Jan 5, 2021
- Gestational Diabetes – increased risk if poor Vitamin D Receptor – 2 Meta-Analyses 2021
- Autism associated with low Vitamin D (again) – Meta-Analysis Jan 2021
- Small vitamin D doses given during pregnancy do not reduce childhood asthma – meta-analysis Dec 2020
- T1 Diabetes 3X lower risk if high vitamin D (over 40 ng) – Meta-analysis Nov 2020
- Increased risk of fracture if high level of Vitamin D (if continue to take Calcium) – umbrella analysis of meta-analyses Nov 2020
- Lung Cancer death 40 percent less likely if high level of Vitamin D – meta-analysis Nov 2020
- Deaths from many types of Cancer associated with low vitamin D- review of meta-analyses Sept 2020
- COVID-19 1.7X more likely to be severe if low Vitamin D - meta-analysis Oct 2020
- Low Vitamin D associated 1.8X increased risk of COVID-19 death in hospital – meta-analysis Nov 4, 2020
- Knee osteoarthritis: Vitamin D is the 4th best treatment – meta-analysis Oct 2020
- Vitamin D fights 13 cancers – review of 35 meta-analyses – Oct 2020
- Breast Cancer again associated with low vitamin D – 15th meta-analysis Sept 2020
- Colorectal cancer treated by Vitamin D – 19th meta-analysis – Sept 2020
- Spinal disc degeneration 1.8X more likely if poor Vitamin D Receptor – mata-analysis Sept 2020
- Fewer days in ICU after 300,000 IU of vitamin D, but not 540,000 – meta-analysis Aug 2020
- Acute viral respiratory infections (RTI) reduced by Vitamin D - 20 reviews - Aug 2020
- Live birth 1.7 X more likely after IVF if good level of vitamin D – meta-analysis Aug 2020
- Spot Baldness (Alopecia Areata) 4.1 X more likely if low vitamin D – meta-analysis Aug 2020
- Prudent to consider that Vitamin D has a role in COVID-19 – meta-analysis – Aug 7, 2020
- 3X less risk of Liver cancer if more than 30 ng of vitamin D – meta-analysis July 2020
- Osteoporosis Risk varies with Vitamin D Receptor – three meta-analyses in 2020
- Endometriosis: 2.7 X more likely if with low vitamin D (trend of 9 studies)– meta-analysis May 2020
- Dry eyes associated with low Vitamin D – meta-analysis May 2020
- Liver Cancer 8 percent less likely for every 4 ng higher level of vitamin D – Meta-analysis April 2020
- Multiple Sclerosis 2X-3X more likely if poor Vitamin D Receptor – Meta-analysis Feb 2020
- Alzheimer’s Disease risk is 1.9 X higher if Vitamin D deficient- meta-analysis Feb 2020
- Risk of enveloped virus infection is increased 50 percent if poor Vitamin D Receptor - meta-analysis Dec 2018
- Multiple Sclerosis: 10 percent fewer relapses for each 10 ng higher level of vitamin D – Meta-analysis April 2020
- Parkinson’s disease 1.6X more likely if a poor Vitamin D Receptor – meta-analysis Jan 2020
- Melanoma 2.1 X more likely if low vitamin D – meta-analysis Jan 2020
- Vitamin D does not reduce blood pressure in healthy people (no hypertension, etc) – Meta-analysis Jan 2020
- Glyphosate (Roundup) increases risk of NH lymphoma by 41 percent – meta-analysis July 2019
- Breast Cancer risk reduced 17 percent by 1 hour of daily summer sun – meta-analysis Jan 2020
- Autism 2X more likely if poor Vitamin D Receptor (yet again) – meta-analysis Jan 2020
- Multiple Sclerosis 40 percent more likely if mother had low vitamin D – meta-analysis Jan 2020
- Risk of Multiple Sclerosis varies with the Vitamin D Receptor – meta-analysis Dec 2019
- Hip fractures not prevented by Vitamin D (800 IU daily or large quarterly or annual doses) – meta-analysis – Dec 2019
- Liver Cancer – higher risk if poor genes (Vitamin D receptor etc) – meta-analysis Dec 2019
- Kidney failure 1.1 X more likely if poor Vitamin D Receptor – meta-analysis Dec 2019
- Arterial stiffness reduced if use at least 2,000 IU of Vitamin D for 4 months – meta-analysis Dec 2019
- Psoriasis is associated with 6 ng less vitamin D – meta-analysis Nov 2019
- Colon cancer both prevented and treated by Vitamin D – meta-analysis Dec 2019
- Blood vessels not helped by small vitamin D doses – meta-analysis Dec 2019
- Pregnancies helped by Vitamin D (insulin and birth weight in this case) – meta-analysis Oct 2019
- Inflammatory Bowel Disease 1.5 X more likely if low vitamin D – meta-analysis Dec 2019
- Alzheimer’s Disease risk is 1.3X higher if Vitamin D deficient – meta-analysis Nov 2019
- Asthmatics less able to breathe if low vitamin D – meta-analysis Nov 2019
- Stroke risks increased if low Vitamin D: Death 3.6 X, recurrence 5.5 X – Meta-analysis Nov 2019
- Cardiovascular death 1.5X more likely if less than 20 ng of Vitamin D – 22nd meta-analysis Nov 2019
- Vitamin D trials by military – all 4 found benefit – review Sept 2019
- Obesity 1.5 X more likely if poor Vitamin D Receptor – meta-analysis Nov 2019
- How to read a medical study (with notes on Vitamin D studies) – Oct 2019
- Acne 3X more likely if low Vitamin D – meta-analysis Oct 2019
- Asthma is 20 percent more likely with a poor Vitamin D Receptor gene – meta-analysis Oct 2019
- African Vitamin D - 60% have less than 30 ng – Meta-analysis Oct 2019
- Pneumonia 6X more likely if very low vitamin D – meta-analysis Sept 2019
- Tuberculosis 3X more likely if less than 12 ng of Vitamin D - meta-analysis Sept 2019
- Fertility (sperm) associated with vitamin D – meta-analysis Sept 2019
- Crohn’s Disease associated with lower Vitamin D - meta-analysis Sept 2019
- Mental disorders fought by Omega-3 etc. - meta-meta-analysis Oct 2019
- Preeclampsia 2.7 X less likely if 50,000 IU of Vitamin D every 2 weeks – meta-analysis Sept 2019
- Autism risk increased 30 percent by Cesareans (both low vitamin D) – meta-analysis Sept 2019
- Attention-Deficit Hyperactivity Disorder helped by Vitamin D, need more data – meta-analysis July 2019
- Low Magnesium associated with diabetes, etc. – meta-analysis 2016
- Vitamin D fortification of yogurt – meta-analysis Aug 2019
- Eczema (Atopic Dermatitis) treated by 1,600 IU Vitamin D (again) – Meta-analysis Aug 2019
- NAFLD associated with low vitamin D (in children too) – meta-analysis Aug 2019
- Septic children have low Vitamin D (54 studies, ignored Vitamin D Receptor) – meta-analysis April 2019
- Depression less likely if more Vitamin D (12 percent per 10 ng) – meta-analysis July 2019
- BMI decreased by Vitamin D (none of the trials used enough D for long enough) – meta-analysis July 2019
- People supplemented with Vitamin D had 13 percent fewer Cancer deaths – Meta-analysis of RCT June 2019
- Low back pain 2X more likely if very low Vitamin D – meta-analysis Nov 2017
- Vitamin D supplementation reduces many Cardiovascular Disease markers– meta-analysis July 2018
- Low-dose vitamin D does not help cardiovascular (many were 100-1,000 IU) – meta-analysis June 2019
- Hepatitis B patients have 2 ng lower level of Vitamin D – meta-analysis June 2019
- Lung Cancer more likely if poor Vitamin D Receptor – meta-analysis June 2019
- Hashimoto's thyroiditis 3.2 X more likely if low vitamin D – meta-analysis May 2019
- High Blood Pressure reduced by Vitamin D supplementation in seniors and obese – meta-analysis May 2019
- PMS reduced by Vitamin D intervention - meta-analysis May 2019
- Asthma supplementation by Vitamin D (any amount) reduced attacks by 25 percent – meta-analysis April 2019
- Vitamin K (any amount and any kind) reduced bone fractures by 24 percent – meta-analysis – May 2019
- Variety of Vitamin D forms treat Prostate Cancer – RCT Review April 2019
- Vitamin D supplementation increases strength of lower muscles – Meta-analysis April 2019
- Vitamin D reduced only the systolic blood pressure in T2DM – Meta-analysis April 2019
- Non-Hodgkin Lymphoma 20 percent more likely if low UV – meta-analysis April 2019
- Inflammatory bowel diseases are associated with Vitamin D etc. – meta-meta-analysis - April 2019
- Vitamin D helps Diabetic Nephropathy kidneys – meta-analysis April 2019
- Vitamin D treats Gestational Diabetes, decreases hospitalization and newborn complications – meta-analysis March 2019
- Diabetic Foot Ulcer 1.4 to 3.6 X more likely if low vitamin D – several meta-analyses
- Breast Cancer reduced 20 percent by fish (Omega-3) – meta-analysis Feb 2019
- Tuberculosis increased risk if poor Vitamin D receptor varies by race – meta-analysis Feb 2019
- Cancer with low Vitamin D increases Mortality by 13 percent – meta-analysis Feb 2019
- Birth size and weight increased by Vitamin D – meta-analysis Feb 2019
- Parkinson’s disease 20 percent more likely in Asians if poor Vitamin D Receptor – meta-analysis April 2019
- Tuberculosis (multi-drug resistant) was 13.4 X more likely to be quickly cleared with Vitamin D - Meta-analysis Feb 2019
- Infants need 400 IU of vitamin D to prevent rickets – meta-analysis Feb 2019
- Increased risk of ADHD (28 pct.) and Autism (58 pct.) if low vitamin D during pregnancy – meta-analysis Jan 2019
- Low Vitamin D is associated with dying sooner (70 studies) – meta-analysis Jan 2019
- Pregnancies helped by Vitamin D in many ways – 27th meta-analysis Jan 2019
- Respiratory infections reduced only 20 percent by Vitamin D (ignored dose size, duration, type, etc) – meta-analysis Jan 2019
- Parkinson’s patients 50X less likely to get even a little sun– meta-analysis Jan 2019
- Lupus patients are 5 X more likely to have low vitamin D – many meta-analyses
- Heart Failure and Vitamin D meta-analyses - many studies
- Osteoporosis 15 percent more likely if poor Vitamin D receptor – meta-analysis Dec 2018
- Vitamin K (across all dose sizes and types) decrease Vascular Stiffness – meta-analysis - Dec 2018
- ADHD associated with low vitamin D in all 8 trials – meta-analysis Oct 2018
- Parkinson's Disease 2.1 X more likely if low Vitamin D – Meta-analysis Nov 2018
- Catching Tuberculosis from family member 2 X more likely if low vitamin D – meta-analysis Dec 2018
- Psoriasis risk in Caucasians is 1.3 X higher if poor Vitamin D Receptor – meta-analysis Nov 2018
- Alzheimer's risk increased 7 percent for every 4 ng decrease in Vitamin D– meta-analysis Nov 2018
- IBD relapse rate reduced by low Vitamin D - meta-analysis Nov 2018
- Small or infrequent doses of vitamin D do not reduce heart failure much – meta-analysis Jan 2018
- Vitamin D decreases oxidative stress – meta-analysis Nov 2018
- Prostate Cancer death 40 percent less likely if 40 ng level of vitamin D – Meta-analysis Oct 2018
- Vitamin D not help fractures and falls if not vitamin D deficient – meta-analysis Oct 2018
- Poor sleep 1.5 X more likely if less than 20 ng of Vitamin D – meta-analysis Oct 2018
- Anxiety severity reduced if more than 2 grams of Omega-3 – meta-analysis Sept 2018
- Lung Cancer risk decreased 2.4 percent with every 100 IU Vitamin D extra intake – meta-analysis Sept 2018
- Frailty risk increases 12 percent for every 10 ng less vitamin D – meta-analysis Sept 2018
- Tuberculosis in children 1.7 X more likely if low vitamin D – meta-analysis Aug 2018
- ICU length of stay reduced when supplement with Omega-3 – meta-analysis July 2018
- Less depression in seniors taking enough Omega-3 – meta-analysis July 2018
- Dialysis patients who added Vitamin D were 41 percent less likely to get infection – Meta-analysis July 2018
- Vitiligo (spotty skin coloring) is 4 X more likely if poor Vitamin D Receptor – meta-analysis July 2018
- Colorectal cancer is associated with Vitamin D (17 meta-analyses so far) – July 2018
- Dementia is associated with low vitamin D - many studies
- Prediabetes treated by Vitamin D (34 ng, 3500 IU per day) – meta-analysis May 2018
- Vitamin D supplementation reduced SGA, fetal mortality, infant mortality – JAMA Meta – May 2018
- Hypertension not reduced much if use less than 5,000 IU of Vitamin D – meta-analysis June 2018
- Diabetics helped by vitamin D in 5 ways – meta-analysis June 2018
- Thyroid Cancer 1.3X higher risk if low vitamin D (yet again) – meta-analysis June 2018
- MS not treated by Vitamin D (a few old studies using small doses) – Meta-analysis July 2018
- Multiple Sclerosis treated when use high doses of vitamin D – meta-analysis May 2018
- Alopecia areata (spot baldness) associated with 8.5 ng lower levels of vitamin D – meta-analysis April 2018
- Cancer not treated by Vitamin D when ignore dose size, type, and length of trial – meta-analysis April 2018
- Widespread pain, arthritis pain and muscle pain are associated with low vitamin D – meta-analysis March 2018
- Pancreatic cancer risk reduced 25 percent by just 10 micrograms of Vitamin D or Vitamin B12 – meta-analysis March 2018
- Peripheral arterial disease risk is 1.5X higher if low vitamin D – meta-analysis March 2018
- Influenza Vaccination not benefited by lowish levels of vitamin D – meta-analysis March 2018
- Diabetes treated and prevented by more than 2,000 IU of vitamin D (need more and gut-friendly) - meta-analyses 2018
- Vitamin D, by itself, does not decrease BMI – meta-analysis March 2018
- Gestational Diabetes 39 percent more likely if insufficient Vitamin D – Meta-analysis March 2018
- Breath better if higher level of Vitamin D – meta-analysis March 2018
- Diabetic inflammation reduced by Vitamin D – meta-analysis Feb 2018
- Ischemic Stroke risk reduced by 2.5 if have good level of vitamin D – meta-analysis Feb 2018
- Dialysis patients 23 percent more likely to live if had just 10 ng more Vitamin D – meta-analysis Feb 2018
- Thyroid Cancer 1.4 X higher risk if low vitamin D– meta-analysis Feb 2018
- Risk of Dementia and Alzheimer's reduced by higher levels of Vitamin D – meta-analysis Feb 2018
- ADHD in children 2.6 X more likely if low vitamin D – meta-analysis Feb 2018
- Lupus associated with low vitamin D – Caucasian 2.2 X, Arab 4.6 X – meta-analysis Jan 2018
- Asthma risk reduced by 67 percent with Vitamin D supplementation if level was initially low– meta-analysis Nov 2017
- Type 1 Diabetes (T1DM) 1.6 X more likely if low vitamin D – meta-analysis Jan 2018
- Psoriasis severity associated with low vitamin D (10 studies) – meta-analysis Jan 2018
- Vitamin D and Age-Related Macular Degeneration (and 2 AMD meta-analyses) – Oct 2017
- Hyperglycemia associated with low vitamin D – type II diabetics and healthy people – meta-analysis Jan 2018
- Prostate cancer risk increase with Vitamin D (other studies disagree) – meta-analysis Jan 2018
- Fractures not reduced by small amounts of vitamin D - meta-analysis Dec 2017
- The worse the sleep apnea, the lower the vitamin D levels – meta-analysis 2017, 2020
- Ovarian Cancer in Asia is 1.5 X more likely if poor Vitamin D receptor – meta-analysis Dec 2017
- Calcium increased risk of side effects in trials (no problems with just Vitamin D) – meta-analysis Nov 2017
- The Misuse of Meta-analysis in Nutrition Research (and vitamin D) – JAMA Oct 2017
- Review of meta-analyses of non-skeletal benefits of vitamin D (Mortality, RTI, etc) – July 2017
- Critically ill children with low vitamin D: 2.5 X more likely to die or stay 2 days longer - meta-analysis Nov 2017
- IVF 50 percent more likely to result in pregnancy if high vitamin D – meta-analysis Nov 2017
- Seniors 2.2 X more likely to walk slowly if very low vitamin D – meta-analysis Dec 2017
- Magnesium treats diabetes and cardiovascular problems – meta-analysis Feb 2017
- Bone formation in the lab is aided by Vitamin D, Vitamin K1, and Vitamin K2 – meta-analysis Nov 2017
- Preventing Falls in Older Adults – Vitamin D combination is the best - JAMA Meta-analysis Nov 2017
- Breast Cancer rate reduced by 40 percent with Omega-3 – meta-analysis June 2013
- Preeclampsia reduced 2X by Vitamin D, by 5X if also add Calcium – meta-analysis Oct 2017
- Omega-3 reduced time in hospital and atrial fibrillation after cardiac surgery – meta-analysis May 2016
- APS (associated with miscarriage, stillbirth. preterm delivery and stroke) is 3X more likely if low vitamin D – meta-analysis Oct 2017
- Unipolar depression treated by Omega-3, Zinc, and probably Vitamin D – meta-analysis Oct 2017
- Pneumonia patients 3 X more likely to die if low vitamin D – meta-analysis Sept 2017
- Diabetes helped by daily 4,000 IU of Vitamin D – meta-analysis Sept 2017
- Preeclampsia risk reduced 60 percent if supplement with Vitamin D (they ignored dose size) – meta-analysis Sept 2017
- Small for gestational age is 1.6 X more likely if mother was vitamin D deficient – meta-analysis Aug 2017
- Resistance exercise combined with Vitamin D is great for seniors – meta-analysis July 2017
- Chronic widespread pain reduced a bit by vitamin D ignored dose sizes - meta-analysis Aug 2017
- Global sperm count dropped by 59 percent in 40 years – meta-analysis Aug 2017
- RCTs probably not the future gold standard - CDC former head – July 2017
- Poor cognition 26 percent more likely if low Vitamin D (29 studies) – meta-analysis July 2017
- Pancreatic cancer risk of death reduced 19 percent by Vitamin D – meta-analysis June 2017
- Chronic Kidney Disease mortality is 60 percent less likely if good vitamin D – meta-analysis July 2017
- Lung Cancer patients were 2.4 times more likely to have a poor Vitamin D Receptor gene – July 2017
- Diabetic nephropathy (Kidney problem) 1.8 X more likely if poor Vitamin D Receptor – meta-analysis July 2017
- Overview of Vitamin D Meta-analysis and RCT for Caucasians - July 2017
- Lung Cancer death 60 percent less likely if high level of vitamin D – 2 meta-analysis 2017
- 2.7 fewer days in hospital after surgery if had taken Omega-3 (19 RCT) – meta-analysis – June 2017
- Rheumatic diseases not helped by Vitamin D – if you ignore what and how much was given – meta-analysis June 2017
- Breast Cancer Mortality reduced 60 percent if more than 60 ng of Vitamin D – meta-analysis June 2017
- Sepsis: 4 fewer days in ICU if add Omega-3 – meta-analysis of 12 RCT – June 2017
- Vitamin D loading doses reduce ICU mortality by 30 percent – meta-analysis April 2017
- Fewer Multiple Sclerosis lesions when supplemented with Vitamin D – meta-analysis May 2017
- Miscarriage 2 times more likely if low vitamin D – meta-analysis May 2017
- Inflammation reduced when vitamin D supplementation raised level higher than 32 ng – meta-analysis May 2017
- Systematic Reviews of Vitamin D underway as of May 2017
- Fewer than half of pregnancies will get even 20 ng of vitamin D with 800 IU daily dose – meta-analysis May 2017
- Hip fracture 58 percent more likely if low vitamin D – meta-analysis March 2017
- Autism risk factors – many are associated with low vitamin D – meta-meta-analysis March 2017
- Diabetic Retinopathy twice as likely if a T2 Diabetic has low level of vitamin D – meta-analysis March 2017
- Low Vitamin D results in adverse pregnancy and birth outcomes – Wagner meta-analysis March 2017
- Bacterial vaginosis in pregnancy increased prematurity risk by 60 percent - meta-analysis 1999
- Cardiovascular deaths 12 percent less likely if have 10 ng more vitamin D – meta-analysis March 2017
- Acute respiratory tract infections prevented by vitamin D (even when ignoring the dose size – Meta-analysis Feb 2017
- Preterm birth rate reduced by 43 percent with adequate Vitamin D supplementation – meta-analysis Feb 2017
- Asthma exacerbations in children decrease by 60 percent with vitamin D supplementation – meta-analysis – 2015
- Dementia risk factor is increased by 1.5 if low vitamin D – meta-analysis Jan 2017
- Low vitamin D is a risk factor for tuberculosis – meta-analysis Dec 2016
- Colorectal cancer 60 percent less likely: high vs low Vitamin D level – meta-analysis Dec 2016
- Vitamin D during pregnancy reduces risk of childhood asthma by 13 percent – meta-analysis Dec 2016
- Colorectal Cancer recurrence not prevented by 1,000 IU of vitamin D – meta-analysis Dec 2016
- Health problems prevented by eating nuts (perhaps due to Magnesium and or Omega-3) – meta-analysis Dec 2016
- Eczema (Atopic Dermatitis) treated by 1600 IU of vitamin D – meta-analysis Dec 2016
- Much more than 2,000 IU of vitamin D is needed daily (Middle East studies agree) – meta-analysis Nov 2016
- Diabetic Retinopathy 2 X more likely if poor Vitamin D Receptor – meta-analysis Nov 2016
- ICU patients 30 % less likely to die if have enough vitamin D – meta-analysis Nov 2016
- Childhood asthma about 1.3 times more likely if poor Vitamin D Receptor – meta-analysis Aug 2016
- Tuberculosis 1.3 times more likely if poor Vitamin D Receptor – meta-analysis Oct 2016
- COPD 2.8 times more likely to be severe if low vitamin D – meta-analysis Oct 2016
- Non-Alcoholic Fatty Liver Disease treated by Omega-3 – three meta-analysis 2016-2017
- Chronic Pain reported 38 percent less often if supplemented with Vitamin D – meta-analysis Sept 2016
- Atrial Fibrillation 1.3 times more likely if low vitamin D – meta-analysis Sept 2016
- Risk of Cancer increased if poor Vitamin D Receptor – meta-analysis of 73 studies Jan 2016
- Magnesium is associated with prevention and treatment of Diabetes – Meta-analysis Aug 2016
- Vitamin D supplementation and fewer kidney stones – meta-analysis of RCT Sept 2016
- Multiple Sclerosis and small doses of Vitamin D – meta-review March 2016
- Vitamin D helps during pregnancy – meta-analysis Feb 2016
- Blood pressure is reduced by more than 800 IU of vitamin D – meta-analysis Aug 2016
- Coronary Artery Disease without diabetes 5 times more likely if VDR gene problems – meta-analysis May 2016
- 4 fewer days in hospital after hip or knee replacement if good level of vitamin D – June 2016
- Migraine headaches quickly reduced with Magnesium – Meta-analysis Jan 2016
- Diabetic Retinopathy 27 percent more likely if low vitamin D – meta-analysis May 2016
- Preterm birth 30 percent more likely if low vitamin D – meta-analysis May 2016
- Lower respiratory tract infections in children associated with Low Vitamin D – meta-analysis May 2016
- Asthma medicines not helped by vitamin D (if only a small amount of D is taken) – meta-analysis Dec 2015
- Omega-3 helps childhood cognition – meta-analysis April 2016
- Rheumatoid Arthritis strongly associated with low vitamin D – meta-analysis April 2016
- Late stage AMD 2.2 more likely if low vitamin D – meta-analysis April 2016
- Poor cognition associated with low vitamin D in elderly (Asians now too) – meta-analysis March 2016
- Kidney stones associated with higher vitamin D (but not agree how much 20-100 ng) – meta-analysis March 2016
- Kidney cancer 22 percent less likely if high vitamin D – meta-analysis Nov 2015
- In vitro fertilization not helped by vitamin D if ignore high levels and male levels – meta Mar 2016
- Bladder cancer modifiable risk factors include low vitamin D – meta-analysis March 2016
- Vitiligo is associated with low vitamin D (nothing about treatment) – meta-analysis March 2016
- Vitamin D3 levels decreased by consumption of UV mushrooms – meta-analysis Feb 2016
- Rheumatoid Arthritis associated with lower vitamin D and higher latitude – meta-analysis Jan 2016
- Parkinson’s Disease systematic review finds association with low vitamin D – Jan 2016
- Asthma not helped by less than 2,000 IU of vitamin D - meta-analysis Aug 2015
- Crohn’s disease associated with vitamin D and latitude – meta-analysis Dec 2015
- Bladder cancer 60 percent less likely if have high vitamin D – meta-analysis Dec 2015
- Preterm birth extended by 2 weeks with Omega-3 – Meta-analysis Nov 2015
- Vitamin D response reduced if taken with Calcium – meta-analysis Oct 2015
- Obese are 3.4 X more likely to be Vitamin D deficient – meta-analysis Sept 2015
- COPD strongly associated with Vitamin D Binding Protein problems – meta-analysis Aug 2015
- Fracture risk reduced somewhat by 800 IU of vitamin D and Calcium – meta-analysis Oct 2015
- Autism is associated with low vitamin D – meta-analysis Oct 2015
- Chronic Widespread Pain associated with Vitamin D under 10 ng – meta-analysis Oct 2015
- Chronic Heart Failure not treated by Vitamin D, if dose size is ignored – meta-analysis Oct 2015
- Overview Epileptic children and Vitamin D
- Atrial fibrillation sometimes treated by Omega-3 – meta-analysis Sept 2015
- Peripheral Arterial Disease patients have low vitamin D levels – meta-analysis Oct 2015
- Depression is associated with low Magnesium – meta-analysis April 2015
- Atopic Dermatitis risk is 55 percent higher if low vitamin D – Meta-analysis Oct 2015
- Acute fracture patients – 70 percent were vitamin D deficient – meta-analysis Sept 2015
- Vitamin D meta-analyses often disagree due to selection of: trial, data extraction, statistics, etc. Dec 2014
- Knee joint space narrowing (Osteoarthritis) 1.5X worse with low vitamin D – meta-analysis Sept 2015
- Gestational Diabetes Mellitus 1.5X more likely if low vitamin D – meta-analysis Oct 2015
- Cancer risk weakly associated with vitamin D-binding protein – meta-analysis Sept 2015
- COPD severity is associated with Vitamin D deficiency – meta-analyses 2015, 2019
- Lung Cancer risk decreases 5 percent for every 2.5 nanogram increase in Vitamin D – meta-analysis Sept 2015
- Rheumatoid arthritis is 40 percent more likely if vitamin D Receptor problem – 2 meta-analyses 2015
- Fatty Fish in diet increases vitamin D level a few nanograms – meta-analysis Sept 2015
- 3000 IU of vitamin D minimum to reduce parathyroid hormone (PTH) – meta-analysis Sept 2015
- Diabetes not prevented by Vitamin D (when you ignore how much vitamin D was taken) – Sept 2015
- Low vitamin D - anemia 2.2X more likely (no surprise) – meta-analysis Aug 2015
- Infant wheezing 40 percent less likely if mother supplemented with vitamin D, vitamin E, or Zinc – meta-analysis Aug 2015
- Gut problems more likely if low vitamin D (IBD: 1.6, UC: 2.3) – meta-analysis Aug 2015
- Cognitive decline in elderly slowed by Omega-3 – meta-analysis May 2015
- Colon cancer 30 percent more likely if low vitamin D – 12th meta-analysis Aug 2015
- Migrants from Middle East are slightly more vitamin D deficient than those from Africa - meta-analysis Aug 2015
- Alzheimer’s disease 21 percent more likely if low vitamin D – meta-analysis Aug 2015
- Hypertension is associated with low vitamin D in some groups – meta-analysis April 2015
- Slipped upper femoral epiphysis (hip pain in teen) associated with vitamin D – meta-analysis May 2015
- Obesity causes 20 percent of all cancer, low vitamin D may be the connection – meta-analysis - Sept 2014
- Bladder cancer 25 percent less likely if have high vitamin D – meta-analysis April 2015
- Graves Disease is 2.2X more likely with low vitamin D – meta-analysis May 2015
- Obese of all ages have lower levels of vitamin D – meta-analysis May 2015
- Tuberculosis 4.5X more likely if vitamin D less than 10 nanogram – meta-analysis May 2015
- Lung Cancer less likely if vitamin D (higher level or supplement) – meta-analysis May 2015
- Increased risk of some female cancers if low vitamin D (due to genes) – meta-analysis June 2015
- Does vitamin D treat pain – still not absolutely, positively sure – meta-analysis April 2015
- Surgical outcomes are better for higher levels of Vitamin D – systematic review May 2015
- Birth weight and length increased with high levels of vitamin D – meta-analysis March 2015
- Lymphoma, leukemia etc, survival poor if low vitamin D – meta-analysis March 2015
- Autoimmune Thyroid Disease 3X more likely if low vitamin D – meta-analysis April 2015
- Pregnancy and Vitamin D – meta-analysis April 2015
- Falls not prevented by vitamin D given every 3 months or less often – meta-analysis Jan 2015
- Vitamin D prevents falls – majority of meta-analyses conclude – meta-meta analysis Feb 2015
- Hypertension reduced by Omega-3, especially if previously untreated – meta-analysis July 2014
- C-reactive protein (heart disease marker) reduced by vitamin D – meta-analysis 2014, 2019
- Clinical Trials of vitamin D can have “biological flaws” – Jan 2015
- Cardiovascular disease associated with postmenopausal non-human primates – meta-analysis Jan 2015
- Vitamin D and fractures – 24 meta-analyses and counting – Dec 2014
- Adding Calcium does NOT cause cardiovascular problems (reverses their meta-analysis) – Dec 2014
- Diabetics are 2.7 X more likely to get peripheral neuropathy if low vitamin D – meta-analysis Dec 2014
- PTH reduced 3.5 pmol by vitamin D intervention which added 22 ng – meta-analysis June 2014
- Multiple sclerosis patients have 15 ng lower levels of vitamin D – meta-analysis June 2014
- Vitamin D loading doses of up to 400,000 IU OK for adolescents – meta-analysis Dec 2014
- Colon cancer risk reduced by many vitamins – 13 percent reduction by Vitamin D – meta-analysis Jan 2015
- Gene makes COPD 2.6X more likely unless get more vitamin D – meta-analysis Dec 2014
- 1.5X increased infection, sepsis, and death if in ICU with low vitamin D - Meta-analysis Dec 2014
- Anorexia nervosa and Vitamin D - several studies
- Meta-analysis of Vitamin D
- Slight depression not reduced by adding vitamin D if already had enough (no surprise) – meta-analysis – Nov 2014
- Stress fractures in basic training associated with 2.5 ng less vitamin D – meta-analysis Nov 2014
- Asthma reduced 60 percent with vitamin D supplementation – meta-analysis 2014, 2015
- Bladder cancer 25 percent less likely if have high vitamin D – meta-analysis Oct 2014
- Statin pain associated with 10 ng less vitamin D – meta-analysis Oct 2014
- Acute Lower Respiratory Infections in Children - associated with low vitamin D – meta-analysis Dec 2014
- More vitamin D needed during pregnancy – meta-analysis Oct 2014
- Cancer (colon, breast, lymph) survival about 2X better with high level vitamin D – meta-analysis July 2014
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Meta-analysis of Vitamin D
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