Rare Genetic Mutation Discovered to Protect Against Alzheimer's Disease

Scientists at Columbia University have uncovered a rare genetic mutation that protects the brain from harmful protein buildup, explaining why some individuals with a high genetic risk for Alzheimer's disease remain mentally sharp into their 80s. This discovery reveals a potential new pathway to prevent early brain damage and could inspire treatments that mimic this natural defense. The findings, published in Nature Aging, build on previous research and identify how excess fibronectin damages the brain's protective barrier.