Can You Head off Aging with Vitamin D?
CAN YOU HEAD OFF AGING WITH VITAMIN D? I first wrote about vitamin D seven years ago, highlighting its role in building strong bones and lowering the risk of chronic disease (The Vitamin D Riddle). Realizing its importance, I increased my own intake from 800 to 4,000 IU daily. Today, I opened my latest issue of the Harvard Health Letter and found an intriguing update: vitamin D may also help slow aging by protecting our telomeres—the protective caps on our chromosomes—from shortening. Let me now share highlights from the September 1, 2025, article by Anthony L. Komaroff, MD, Editor in Chief,...