11/29/2009 05:12 am ET Updated Nov 17, 2011

N.F.L. Players' Dementia: Higher Rate Of Dementia In Former Athletes, Study Finds

A study commissioned by the National Football League reports that Alzheimer's disease or similar memory-related diseases appear to have been diagnosed in the league's former players vastly more often than in the national population -- including a rate of 19 times the normal rate for men ages 30 through 49.

Read more on nytimes.com