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Meta-analysis of Vitamin D

~~#00F:357 Total items in Meta-analysis category//www.vitamindwiki.com/tiki-browse_categories.php?parentId=97&sort_mode=created_desc| All items in category Intervention Vitamin D] #00F:490 items//blogs.scientificamerican.com/absolutely-maybe/2014/01/20/5-key-things-to-know-about-meta-analysis/|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 Sci 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

Vitamin D Pyramid
Intervention - Vitamin D includes the following:

Studies in VitaminDWiki

Year Randomized
Controlled
Trials
Interventions Meta-
analyses
2017- 4852
2016- 5140
2015698235
2014646348
2013816337
2012413839

Note: Govt recommendations in 2015 often ignored data after 2011

Table of contents

20 Most-visited pages in Meta-analysis category in VitaminDWiki__

Id Page Hits Last modification Creator Categories
5913 Meta-analysis of Vitamin D 16677
16 Feb, 2018 22:49
admin Meta-analysis of Vitamin D
Category
3265 Alzheimer's Disease more likely with low vitamin D – meta-analysis Oct 2012 14103
13 Dec, 2015 23:20
admin Meta-analysis of Vitamin D
Top news
Cognitive
3052 Cognitive Impairment 2.4X more likely if low vitamin D – meta-analysis July 2012 13997
21 Oct, 2016 09:53
admin Meta-analysis of Vitamin D
Top news
Cognitive
5322 Cancer survival 4 percent more likely with just a little more vitamin D (4 ng) - meta-analysis July 2014 13615
12 May, 2014 15:50
admin Cancer - Colon
Cancer - Breast
Cancer
Meta-analysis of Vitamin D
Cancer - Lymphoma
5252 Anti-depression medication about as good as big increase in vitamin D – meta-analysis of flawless data April 2014 9004
09 Oct, 2016 08:35
admin Depression
Meta-analysis of Vitamin D
Top news
4808 Sports benefits from up to 50 ng of Vitamin – meta-analysis - Nov 2012 8964
29 Sep, 2015 13:35
admin Sports and Vitamin D
Meta-analysis of Vitamin D
Optimum
4213 Vitamin D and Respiratory Tract Infections – meta-analysis with charts June 2013 8302
23 Jan, 2018 18:40
admin Breathing
Meta-analysis of Vitamin D
Inflammation
5881 Infectious Disease typically not treated if use less than 4000 IU vitamin D daily– review Oct 2014 7930
31 Oct, 2014 12:51
admin Breathing
Immunity
Meta-analysis of Vitamin D
4700 Elderly lower limb muscle strength improved with Vitamin D supplementation - Meta-analysis Oct 2013 7899
09 Mar, 2018 15:36
admin Seniors
Sports and Vitamin D
Meta-analysis of Vitamin D
4936 Parkinson’s Disease and the “Sunshine” Vitamin (vitamin D) – July 2013 7762
08 Jan, 2018 10:13
admin Parkinson
Meta-analysis of Vitamin D
3044 Shift workers 23 percent more likely to have cardiovascular events – meta-analysis July 2012 7732
11 Nov, 2015 01:57
admin Cardiovascular
Meta-analysis of Vitamin D
High Risk
2979 Low vitamin D increased probability of low birth weight by 60 percent – meta-analysis June 2012 7632
13 Dec, 2016 18:39
admin Pregnancy
Meta-analysis of Vitamin D
Top news
4651 Vitamin D deficiency diseases in dark skinned people living far from equator – Meta-analysis Oct 2013 7626
01 Feb, 2017 16:40
admin Skin - Dark
Rickets
Vitamin D Far from equator
Meta-analysis of Vitamin D
Top news
7053 Chronic Widespread Pain associated with Vitamin D under 10 ng – meta-analysis Oct 2015 7068
12 Dec, 2015 00:28
admin Pain - chronic
Meta-analysis of Vitamin D
3941 2X more preeclampsia when vitamin D less than 30 ng, etc. - meta-analysis March 2013 6968
16 Jan, 2016 02:59
admin Pregnancy
Meta-analysis of Vitamin D
Hypertension
5679 Vitamin D supplementation improves muscle strength in healthy adults – meta-analysis of 6 RCT Aug 2014 6944
03 Sep, 2015 16:37
admin Sports and Vitamin D
Meta-analysis of Vitamin D
3445 Acute respiratory infection treated by vitamin D in 6 of 12 clinical trials – review Nov 2012 6864
23 Jan, 2018 18:42
admin Breathing
Meta-analysis of Vitamin D
Top news
2246 40 ng Vitamin D perhaps optimal for reduced mortality – Meta-analysis Jan 2012 6299
13 May, 2016 07:45
admin Mortality and D
Meta-analysis of Vitamin D
Optimum
6003 1.5X increased infection, sepsis, and death if in ICU with low vitamin D - Meta-analysis Dec 2014 6048
20 Oct, 2015 13:33
admin Trauma and surgery
Meta-analysis of Vitamin D
3984 Low vitamin D and depression - Study and meta-analysis, April 2013 6047
19 Apr, 2015 17:13
admin Depression
Meta-analysis of Vitamin D

#900: The Meta-analysis of Autism and Vitamin D

1

The Meta-analysis of BREATHING and Vitamin D

See also PubMed: Vitamin D and asthma in children: A systematic review and meta-analysis of observational studies
July 2017 3.4X more often in low vitamin D


The Meta-analysis of CANCER and Vitamin D

The Meta-analysis of Breast Cancer and Vitamin D

The Meta-analysis of Bladder Cancer and Vitamin D

The Meta-analysis of Colon Cancer and Vitamin D

The Meta-analysis of Prostate Cancer and Vitamin D

The Meta-analysis of Cardiovascular and Vitamin D

See also PubMed (behind paywallSerum 25-hydroxyvitamin D and the risk of cardiovascular disease: dose-response meta-analysis of prospective studies
April 2017, 34 publications with 180,667 participants, 10% less likely for each 10ng higher level of vitamin D


The Meta-analysis of Cognition and Vitamin D

The Meta-analysis of Depression AND Vitamin D

The Meta-analysis of Diabetes and Vitamin D

The Meta-analysis of Falls/Fractures

The Meta-analysis of Gut and Vitamin D 

The Meta-analysis of Hypertension and Vitamin D

The Meta-analysis of Infant-Child and Vitamin D

The Meta-analysis of Inflammation and Vitamin D

The Meta-analysis of Kidney and Vitamin D 

The Meta-analysis of Loading Dose of Vitamin D

The Meta-analysis of Mortality and Vitamin D

The Meta-analysis of Multiple Sclerosis and Vitamin D

The Meta-analysis of Obesity and Vitamin D

The Meta-analysis of Pregnancy and Vitamin D

__See also PubMed: Pregnancy outcome and ultraviolet radiation; A systematic review May 2017 Free PDF online


The Meta-analysis of Psoriasis and Vitamin D (see also Skin)

The Meta-analysis of Rheumatoid Arthritis and Vitamin D

The Meta-analysis of Seniors and Vitamin D

The Meta-analysis of Sports and Vitamin D

See also PubMed 3,000 IU of vitamin D for 12 weeks did not help Sports Performance - Meta-analysis June 2017

The Meta-analysis of Stroke and Vitamin D

The Meta-analysis of Trauma/Surgery and Vitamin D

The Meta-analysis of Tuberculosis and Vitamin D (see also Breathing)

The Meta-analysis of Vitamin D Receptor

All of the articles in Meta-Analysis - sorted by date


Short URL =https://is.gd/MetaD" rel="external"> https://is.gd/MetaD

Meta-analysis of Vitamin D        

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