核桃仁越用人老得越快
Researchers at Harvard Medical School analyzed brain tissue donated to human
brain banks by people ranging in age from their 60s and 70s to centenarians
who lived to be 100 or older. They found people who died before their mid-
80s had lower levels in their brains of a protein called REST that tamps
down genes involved in sparking brain activity, compared to the very oldest
people. REST had already been shown to be protective against Alzheimer’s
disease. But they weren’t sure whether REST somehow protected people from
death or was just a sign of further aging.
