Gridiron linked to risk of brain degeneration

US researchers performed a cohort mortality study of more than 3400 National Football League players who played in at least five seasons from 1959–88.

They found that the footballers were almost four times more
likely to die from Alzheimer’s disease and Lou Gehrig’s disease
than the general US population but were at no greater risk of dying from Parkinson’s disease.

Players in positions vulnerable to high acceleration impacts

were more than three times more likely to die from a