Aging and Neurodegeneration

Aging was once considered inevitable—a slow, quiet drift toward biological decline.But over the last decade, scientists have discovered something extraordinary: Aging is not just about time . It’s also about the accumulation of a specific type of damaged cell that refuses to die. These cells—called senescent cells —build up in the body as we age. They don’t divide, they don’t function normally, and they secrete toxic molecules that damage surrounding tissues. They accelerate