This diet may slow brain aging by 2.5 years

A 12-year study of 1,647 middle-aged and older adults found that people following the MIND diet more closely showed slower brain shrinkage and less grey matter loss, equivalent to about 2.5 years of delayed brain aging. The diet emphasizes leafy greens, berries, nuts, whole grains, fish, beans, and olive oil while limiting butter, cheese, red meat, pastries and fried foods.

Study tracked structural brain changes in one long-running cohort; findings are observational and causality is not established.