Healthier midlife behaviors reduce risk of dementia, stroke, and depression even in those with genetic predisposition, according to a study by Massachusetts General Hospital using U.K. Biobank data. The Brain Care Score (BCS), which assesses lifestyle factors, showed that each 5-point improvement in BCS lowered risk. The study, led by Christopher D. Anderson, emphasizes the power of healthy lifestyle choices to protect brain health, regardless of genetic risk.