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Vitamin D may be a magic bullet for the cells (not based on Vitamin D blood tests) – Jan 2020

Vitamin D: A magic bullet or a myth?

Clinical Nutrition, https://doi.org/10.1016/j.clnu.2019.12.028


Virtually all Vitamin D trials have been based on Vitamin D blood tests
There are at least 4 genes which can restrict the amount of vitamin D in the blood which can get to the tissues

Genetics category listing contains the following

273 articles in the Genetics category

see also

Vitamin D blood test misses a lot
Blood Test Misses a lot (VDW 3439)

  • Snapshot of the literature by VitaminDWiki as of early 2019
  • Vitamin D from coming from tissues (vs blood) was speculated to be 50% in 2014, and by 2017 was speculated to be 90%
  • Note: Good blood test results (> 40 ng) does not mean that a good amount of Vitamin D actually gets to cells
  • A Vitamin D test in cells rather than blood was feasible (2017 personal communication)
  •    Commercially available 2019
    • However test results would vary in each tissue due to multiple genes
  • Good clues that Vitamin D is being restricted from getting to the cells
    1) A vitamin D-related health problem runs in the family
    2) Slightly increasing Vitamin D show benefits (even if conventional Vitamin D test shows an increase)
    3) Vitamin D Receptor test (<$30) scores are difficult to understand in 2016
    • easier to understand the VDR 23andMe test results analyzed by FoundMyFitness in 2018

    4) Back Pain

CYP27B1 category listing contains the following

The CYP27B1 gene activates Vitamin D in the Kidney,    Skin,    Lungs,    Brain,   Eyes   etc.
CYtochrome P450 family 27 subfamily B member 1    = 25-Hydroxyvitamin D3 1-alpha-hydroxylase

Vitamin D blood test misses CYP27B1 and other genes
Blood Test Misses a lot (VDW 3439)

Cancers might alter CYP24A1 gene

Vitamin D Binding Protein has a list of health problems

Health Problem
11 XPreeclampsia
6 XFood Allergy
4 X, 5XKidney Cancer
4 XPoor Response to Oral Vitamin D
3 XEar infection
2 X MS
2 X Colorectal Cancer
2 XProstate Cancer -in those with dark skins
1.3 XInfertility

Vitamin D Receptor is associated in over 58 autoimmune studies
The risk of 44 diseases at least double with poor Vitamin D Receptor as of Oct 2019

 Download the PDF from VitaminDWiki

The interest in Vitamin D (Vit D) is increased after the finding of Vit D receptors in many different cells. This led to the hypothesis that Vit D may have more impact on human health than its role in bone health. Epidemiological studies found associations between low plasma levels of Vit D and the prevalence of many diseases. However, Large RCTs did not find convincing evidence for a positive effect of Vit D supplementation on cancer, cardiovascular disease, auto-immune disease and inflammatory diseases. In this review, the results are described of a literature search regarding the relationship between Vit D status and different diseases.

Pubmed was used to find systematic reviews of observational studies describing the association between Vit D status, diseases (cancer, coronary heart diseases, auto-immune diseases, sepsis) and mortality. Subsequently, a search was performed for RCTs and the results of large RCTs are described. Studies with a positive intervention effect on primary or secondary outcome variables are summarized. No exclusion criteria were used.

The metabolism of Vit D is reviewed, its endogenous production and the intake from food, its activation and transport in the body. The article addresses the effects of diseases on the metabolism of Vit D with special focus on the role of Vit D Binding Protein and its effects on assessing Vit D status. Studies addressing the association between vitamin D status and cancer, cardiovascular diseases, auto-immune diseases, inflammation and severe illness are reviewed. A search for RCTs with positive effects of Vit D supplementation on different diseases yielded only a few studies. The vast majority of RCTs showed no significant positive effects. The presumed high prevalence of Vit D deficiency is questioned based on these results and on altered concentrations of Vit D binding protein, leading to low Vit D levels in plasma but not to low active Vit D levels during disease related inflammation In these conditions, plasma levels of Vit D are therefore not a valid reflection of Vit D status. Reversed causality is described as a possible factor interfering with the correct assessment of the Vit D status. It is concluded that further widespread fortification of foods and stimulation of supplement use should be reconsidered.

Created by admin. Last Modification: Sunday January 12, 2020 03:17:41 GMT-0000 by admin. (Version 5)

Attached files

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