Loading...
 
Translate Register Log In Login with facebookLogin and Register

Vitamin D Heritability: twin studies – 20 percent to 85 percent, GWAS 5 percent – Oct 2018

The genetics of vitamin D.

Bone. 2018 Oct 11. pii: S8756-3282(18)30370-3. doi: 10.1016/j.bone.2018.10.006. [Epub ahead of print]

VitaminDWiki

This study appears to only look at the effect of genes on Vitamin D level in blood.
Seems to be unaware that genes can reduce the Vitamin D level in cells
Wonder if they consider the gene ACTIVATION effects on Vitamin D in cells


Genetics category listing contains the following

234 articles in the Genetics category

see also 267 articles in Vitamin D Receptor, 98 articles in Vitamin D Binding Protein

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

  • Snapshot of the literature by VitaminDWiki - (subject to many future developments)
  • Vitamin D from coming from tissues (vs blood) was speculated to be 50% in 2014, andi in 2017 is speculated to be 90%
  • Note: Good results from a blood test (> 40 ng) does not mean that a good amount of Vitamin D actually gets to cells
  • A Vitamin D test in cells appears feasible (personal communication)
    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
       especially if it is one of 47+ diseases related to Vitamin D Receptor
    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
        probably want at least 2 clues before taking adding vitamin D, Omega-3, Magnesium, Resveratrol, etc
          The founder of VitaminDWiki took action with clues #3&4

PDF is available free at Sci-Hub  10.1016/j.bone.2018.10.006
Image

Jiang X1, Kiel DP2, Kraft P3.

  • 1 Program in Genetic Epidemiology, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, Brookline, Boston 02115, USA; Unit of Cardiovascular Epidemiology, Institute of Environmental Medicine, Karolinska Institute, Nobels vagen 13, Stockholm 17177, Sweden xiajiang at hsph.harvard.edu.
  • 2 Institute for Aging Research, Hebrew SeniorLife, 1200 Centre Street, Boston, MA 02131, United States; Department of Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA 02115, United States; Broad Institute of Harvard and Massachusetts Institute of Technology, Boston, MA 02142, United States.
  • 3 Program in Genetic Epidemiology, Harvard T.H. Chan School of Public Health, 677 Huntington Ave, Brookline, Boston 02115, USA.

Vitamin D plays an essential role in human health as it influences immune function, cell proliferation, differentiation and apoptosis. Vitamin D deficiency has been associated with numerous health outcomes, including bone disease, cancer, autoimmune disease, cardiovascular conditions and more. However, the causal role of vitamin D beyond its importance for bone health remains unclear and is under much debate.
Twin and familial studies from past decades have demonstrated a nontrivial heritability of circulating vitamin D concentrations.
Several large-scale genome-wide association studies (GWAS) have discovered associations of GC, NADSYN1/DHCR7, CYP2R1, CYP24A1, SEC23A, AMDHD1 with serum levels of vitamin D. A recent whole genome sequencing (WGS) study, combined with deep imputation of genome-wide genotyping, has identified a low-frequency synonymous coding variant at CYP2R1. Information on these genetic variants can be used as tools for downstream analysis such as Mendelian randomization. Here, we review the genetic determinants of circulating vitamin D levels by focusing on new findings from GWAS and WGS, as well as results from Mendelian randomization analyses conducted so far for vitamin D with various traits and diseases. The amount of variation in vitamin D explained by genetics is still small, and the putative causal relationship between vitamin D and other diseases remains to be demonstrated.

Created by admin. Last Modification: Monday October 15, 2018 12:45:16 GMT-0000 by admin. (Version 3)

Attached files

ID Name Comment Uploaded Size Downloads
10690 Heritablility of Vit D levels.jpg admin 15 Oct, 2018 12:32 199.48 Kb 53
See any problem with this page? Report it (FINALLY WORKS)