The Vitamin D Paradox in COVID-19 and Why It Predicts But Doesn't Always Protect

Roger Seheult, MD of MedCram examines the vitamin D paradox. See all Dr. Seheult's videos at: (This video was recorded on April 10, 2022) Roger Seheult, MD is the co-founder and lead professor at He is Board Certified in Internal Medicine, Pulmonary Disease, Critical Care, and Sleep Medicine and an Associate Professor at the University of California, Riverside School of Medicine. LINKS / REFERENCES: Pre-infection 25-hydroxyvitamin D3 levels and association with severity of COVID-19 illness (PLOS) | Vitamin D Supplements for Prevention of Covid-19 or other Acute Respiratory Infections: a Phase 3 Randomized Controlled Trial (medRxiv) | Sunlight: Optimize Health and Immunity (MedCram) | All coronavirus updates are at (including m