Description:Constant media headlines about NFL players suffering from severe head related injuries, as well as reports of retired players committing suicide or falling into dementia has many athletes concerned about the future of their health, Including Emmit Smith. He says he hasn't noticed any symptoms, yet but it seems he's expecting to in the future. Smith said, "Knowing what has started to come out in terms of the evidence of guys having mental issues right now, it concerns me."(1:00)