Increased Dementia Risk Seen for NFL Players

The National Football League has long denied that retired players are subject to Alzheimer's or other memory-related diseases. But a study commissioned by the NFL itself reports otherwise. What will that mean not just for the pros but for high-school and college players who often suffer concussions? One neurosurgeon calls it “a game changer,” according to the New York Times in an article by Alan Schwarz.