An estimated 42 of Americans over the age of 55 are expected to develop dementia — a condition that slowly erodes memory and cognitive function. But a groundbreaking new study offers hope. For the first time, scientists have gathered the strongest evidence yet that a structured lifestyle involving physical exercise, a balanced "MIND" diet, and consistent social activity can actually slow or reverse cognitive decline. Join us as we break down the science, the stories, and what it means for your future.