Is VDR useful for longevity?

The vitamin D receptor (VDR) is a nuclear receptor that mediates the genomic effects of vitamin D, which is involved in bone metabolism, immune function, cell differentiation, and inflammation regulation. Some studies have linked certain VDR polymorphisms (e.g., rs2228570, rs1544410) to altered longevity, but effect sizes are small and findings are inconsistent. Evidence comes mainly from candidate gene studies and GWAS, not from randomized controlled trials. Moreover, longevity is influenced by many factors – diet, lifestyle, environment – that are often not well controlled in such analyses. Therefore, a direct DNA test for VDR variants cannot reliably predict individual lifespan. The clinical utility remains unclear, and results should be considered exploratory. For practical purposes, optimizing vitamin D status (blood levels) is likely more relevant than genotyping alone.