Vitamin D plays a critical role in how our immune system functions at the cellular and genetic level.
In this Vitamin D Study Hour, Dr. John White, a molecular biologist specializing in gene regulation and vitamin D signaling, shares decades of research exploring how vitamin D influences immune defense, infection control, and autoimmune disease risk.
Using advances in genomics, Dr. White’s work has helped uncover how vitamin D activates the vitamin D receptor (VDR) to regulate genes involved in immune protection. His research demonstrated that vitamin D stimulates the production of antimicrobial peptides, natural antibiotics produced by our own cells that help the body defend against bacteria and pathogens. The presentation also explores emerging research on vitamin D’s role in the thymus, the organ responsible for developing and training immune cells. These findings suggest that maintaining adequate vitamin D levels during early life may play an important role in supporting immune tolerance and reducing the risk of autoimmune disease.
Key topics discussed include:
• How vitamin D regulates gene expression through the vitamin D receptor
• The discovery that vitamin D stimulates antimicrobial peptides that help fight infection
• Evidence linking vitamin D status to immune responses and bacterial defense
• Vitamin D’s role in thymus function and immune tolerance
• Why avoiding vitamin D deficiency is important for lifelong immune health
