Vitamin D influences more than 200 genes. This includes genes related to cancer and autoimmune diseases like multiple sclerosis.
Vitamin D affects your DNA through the vitamin D receptors (VDRs), which bind to specific locations of the human genome.
Reuters reports:
“Vitamin D deficiency is a well-known risk factor for rickets, and some evidence suggests it may increase susceptibility to autoimmune diseases such as multiple sclerosis (MS), rheumatoid arthritis and type 1 diabetes, as well as certain cancers and even dementia.”