Vitamin D3 supplementation, low-risk prostate cancer, and health disparities

▸ Vitamin D inhibits growth of prostate cancer cells. ▸ Vitamin D3 supplementation benefits subjects with low-risk prostate cancer. ▸ African-American men have lower circulating levels of vitamin D than Caucasian men. ▸ African-Americans have a higher incidence of prostate cancer than Caucasians. ▸ Vitamin D3 supplementation could reduce prostate cancer-related health disparities.