Vitamin D Health problems can run in families (epigenetics, they miss other reasons) – June 2023)

---

Effect of epigenetics on vitamin D levels: a systematic review until December 2020

Arch Public Health. 2023 Jun 15;81(1):106. doi: 10.1186/s13690-023-01122-2.
Ali Forouhari 1, Motahar Heidari-Beni 2, Shaahin Veisi 3, Parnian Poursafa 4, Roya Kelishadi 5

Background: The association between epigenetic modification of the genes involved in the vitamin D metabolic pathway and vitamin D metabolites' status has been elucidated incompletely. This study aims to review the studies on the mentioned association and create a brighter view of this topic.

Methods: A systematic literature search was conducted in Medline database (PubMed), Scopus, and Web of Science up to the end of November 2020. Original articles which reported the effect of epigenetic alteration-methylation level or its changes-of genes involved in vitamin D regulation on the vitamin D metabolites serum level or its changes were included. The National Institutes of Health (NIH) checklist was used to assess the quality of included articles.

Results: Among 2566 records, nine reports were included in the systematic review according to the inclusion and exclusion criteria. Studies discussed the contribution of methylation status of members of the

• cytochrome P450 family (CYP2R1, CYP27B1, CYP24A1), and
• Vitamin D Receptor (VDR) genes to vitamin D level variance.

CYP2R1 methylation status could regulate the contributing factors affecting the vitamin D serum level and predict response to vitamin D supplementation. Studies revealed that impaired methylation of CYP24A1 occurs in response to an increase in serum level of 25-hydroxyvitamin D (25(OH)D). It is reported that the association between methylation levels of CYP2R1, CYP24A1, and VDR genes and 25(OH)D level is not affected by the methyl-donors bioavailability.

Conclusions: The epigenetic modification of the vitamin D-related genes could explain the vitamin D levels variation among populations. Large-scale clinical trials in various ethnicities are suggested to find the effect of epigenetics on vitamin D response variation.

Registration: The systematic review protocol was registered on PROSPERO (registration number: CRD42022306327).
 Download the PDF from VitaminDWiki

---

VitaminDWiki – Genetics category contains

343 articles in the Genetics category

see also

• Vitamin D Receptor has 530 items
• Vitamin D Binding Protein = GC has 178 items
• CYP27B1 has 63 items
• CYP24A1 in title of 39+ items
• CYP2R1 25+ items
• Calcidiol has 48 items
• Calcitriol has 62 items
• Topical Vitamin D
• Nanoemulsion Vitamin D may be a substantially better form
• 1289 genes changed with higher doses of Vitamin D - RCT Dec 2019
• CYP3A4 (7 as of Dec 2022)
• Getting Vitamin D into your body
• 

Vitamin D blood test misses a lot

• 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
      especially if it is one of 51+ diseases related to Vitamin D Receptor
  2) Slightly increasing Vitamin D shows benefits (even if conventional Vitamin D test shows an increase)
  3) DNA and VDR tests - 100 to 200 dollars $100 to $250
  4) PTH bottoms out ( shows that parathyroid cells are getting Vitamin d)
     Genes are good, have enough Magnesium, etc.
  5) 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&5

---

VitaminDwiki - Reasons for low response by vitamin D level in the blood

---

VitaminDWiki - Health problems that run in families are often associated with low vitamin D

Includes a section "Gene studies of health problems which run in families" - variety of problems

---

17+ VitaminDWiki pages with EPIGENETICS in the title

This list is automatically updated

---

VitaminDWiki - (Many reasons why vitamin D deficiency has become epidemic only some of them are genetics