Whereas, hand-coding version of this page displays 31 assocations
Table of contents
Introduction
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"
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
Meta-analysis category is associated with 52 other VitaminDWiki categories (>4 each)
Click here for association information
Summary of Associations
Associated category | Associations |
---|---|
Results
19 pages in both categories: Meta-analysis of Vitamin D + Trauma and surgery
25 pages in both categories: Meta-analysis of Vitamin D + Cancer - Colon
38 pages in both categories: Meta-analysis of Vitamin D + Vitamin D Receptor
25 pages in both categories: Meta-analysis of Vitamin D + Falls and Fractures
9 pages in both categories: Meta-analysis of Vitamin D + Cancer - Prostate
23 pages in both categories: Meta-analysis of Vitamin D + Vitamin D and Omega-3
42 pages in both categories: Meta-analysis of Vitamin D + Top news
15 pages in both categories: Meta-analysis of Vitamin D + Seniors
22 pages in both categories: Meta-analysis of Vitamin D + Cognitive
19 pages in both categories: Meta-analysis of Vitamin D + Depression
54 pages in both categories: Meta-analysis of Vitamin D + Pregnancy
12 pages in both categories: Meta-analysis of Vitamin D + Parkinson
22 pages in both categories: Meta-analysis of Vitamin D + Hypertension
25 pages in both categories: Meta-analysis of Vitamin D + Cancer - Breast
44 pages in both categories: Meta-analysis of Vitamin D + Virus
5 pages in both categories: Meta-analysis of Vitamin D + Thyroid and parathyroid
4 pages in both categories: Meta-analysis of Vitamin D + Cancer - Liver
4 pages in both categories: Meta-analysis of Vitamin D + How much Vitamin D
40 pages in both categories: Meta-analysis of Vitamin D + Diabetes
30 pages in both categories: Meta-analysis of Vitamin D + Mortality and D
5 pages in both categories: Meta-analysis of Vitamin D + Optimum
10 pages in both categories: Meta-analysis of Vitamin D + Stroke
8 pages in both categories: Meta-analysis of Vitamin D + Bone - Health
41 pages in both categories: Meta-analysis of Vitamin D + Cardiovascular
8 pages in both categories: Meta-analysis of Vitamin D + Skin
35 pages in both categories: Meta-analysis of Vitamin D + Breathing
26 pages in both categories: Meta-analysis of Vitamin D + Infant-Child
8 pages in both categories: Meta-analysis of Vitamin D + Vitamin D and Calcium
7 pages in both categories: Meta-analysis of Vitamin D + ADHD
9 pages in both categories: Meta-analysis of Vitamin D + Vitamin D and Magnesium
5 pages in both categories: Meta-analysis of Vitamin D + Autoimmune
7 pages in both categories: Meta-analysis of Vitamin D + Autism
4 pages in both categories: Meta-analysis of Vitamin D + Youth
5 pages in both categories: Meta-analysis of Vitamin D + Back pain
4 pages in both categories: Meta-analysis of Vitamin D + Vitamin D and Vitamin K
8 pages in both categories: Meta-analysis of Vitamin D + Women
4 pages in both categories: Meta-analysis of Vitamin D + UV and Vitamin D
4 pages in both categories: Meta-analysis of Vitamin D + Cancer - Lymphoma
16 pages in both categories: Meta-analysis of Vitamin D + Cancer
14 pages in both categories: Meta-analysis of Vitamin D + Tuberculosis
13 pages in both categories: Meta-analysis of Vitamin D + Kidney
6 pages in both categories: Meta-analysis of Vitamin D + Pain - chronic
10 pages in both categories: Meta-analysis of Vitamin D + Osteoporosis
6 pages in both categories: Meta-analysis of Vitamin D + Deficiency of Vitamin D
10 pages in both categories: Meta-analysis of Vitamin D + Gut
6 pages in both categories: Meta-analysis of Vitamin D + Cancer - Bladder
5 pages in both categories: Meta-analysis of Vitamin D + Cancer - Pancreatic
11 pages in both categories: Meta-analysis of Vitamin D + Evidence for D
6 pages in both categories: Meta-analysis of Vitamin D + Vision
13 pages in both categories: Meta-analysis of Vitamin D + Intervention
13 pages in both categories: Meta-analysis of Vitamin D + Sports and Vitamin D
7 pages in both categories: Meta-analysis of Vitamin D + Fertility and sperm
6 pages in both categories: Meta-analysis of Vitamin D + Loading dose for Vitamin D
14 pages in both categories: Meta-analysis of Vitamin D + Multiple Sclerosis
4 pages in both categories: Meta-analysis of Vitamin D + Fortification with Vitamin D
4 pages in both categories: Meta-analysis of Vitamin D + Liver
10 pages in both categories: Meta-analysis of Vitamin D + Obesity
4 pages in both categories: Meta-analysis of Vitamin D + Genetics
8 pages in both categories: Meta-analysis of Vitamin D + Rheumatoid Arthritis
4 pages in both categories: Meta-analysis of Vitamin D + Osteoarthritis
7 pages in both categories: Meta-analysis of Vitamin D + Cancer - Lung
4 pages in both categories: Meta-analysis of Vitamin D + Associations
Page | Hits | Categories | Major change |
---|---|---|---|
Vitamin D meta-analyses for different health problems | 159 | Meta-analysis of Vitamin D, Evidence for D, Associations | 29 Sep, 2023 |
Meta-analyses of vitamin D, etc, sorted by associated category | 380 | Meta-analysis of Vitamin D, Associations | 14 Sep, 2022 |
Magnesium fights diabetes (yet again)– meta-analysis Nov 2021 | 2074 | Diabetes, Vitamin D and Magnesium, Meta-analysis of Vitamin D, Associations | 20 Apr, 2022 |
Overview Meta-analysis of Vitamin D | 30275 | Overviews, Meta-analysis of Vitamin D, Associations | 28 Dec, 2017 |
6 pages in both categories: Meta-analysis of Vitamin D + Metabolic Syndrome
4 pages in both categories: Meta-analysis of Vitamin D + Sleep
6 pages in both categories: Meta-analysis of Vitamin D + Psoriasis
7 pages in both categories: Meta-analysis of Vitamin D + Vitamin D3 instead of D2
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