Why some 80-year-olds are as sharp as when they were in 50s |
Dana G Smith New York TimesUpdated: Feb 26, 2026, 15:07 IST IST Many people’s brains deteriorate as they age, becoming riddled with malfunctioning proteins that result in cell death and the loss of memory and cognition. But other people’s brains remain almost perfectly intact, their thinking as sharp at 80 as it was in their…