I don't ever see any NBA players in the news for it, but its almost always NFL players.
Most Helpful Guy
They're trained to be agressive all their lives, and usully the more agressive people are the ones that would want to play football in the first place (at least a percentage will get into football just to hit people) they get concussions and brain damadge which can cause depression and other shit. Going from beeing poor to beeing rich and famous can mess a lot of people up. The NFL's substance testing is questioned by many and it is assumed that a good portion of players uses steroids or other shit. There's probably more reasons0
Most Helpful Girl
Some studies suggest concussions may be related to it. I haven't read enough to have my own opinion, but it's a hot topic.0