NBC Sports
updated 7/23/2013 9:47:07 PM ET 2013-07-24T01:47:07

Bengals owner Mike Brown says there’s no proof that players who suffer concussions on the football field are more likely than the average man to develop dementia later in life. Brown said today that there simply isn’t enough research to draw the conclusion that football players who suffer concussions are at greater risk of symptoms…

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