How Different Are Dogfighting and Football?
Two Reputable NFL Player Brain Studies Getting Underway
Study finds no ties between youth tackle football, brain or behavioral issues
Players With C.T.E. Doubled Risk With Every 5.3 Years in Football - The New York Times
Playing Football Linked to 61% Increased Risk of Parkinson's Disease
Study: 91.7% of Former NFL Players Studied Had CTE a Degenerative Brain Disease - NowThis
Playing football may increase risk of Parkinson's disease, study suggests
Brain risk seen in early-age football - The Boston Globe
Ex-NFL players who played tackle football in youth more likely to have thinking, memory problems - ESPN