The NFL is still coming to grips with the dangers of professional football — a brutal sport that makes the league tremendously wealthy.
He is not the first football player to have committed suicide, and experts worry that it may be linked to repeated concussions.
Friends and former team-mates say they never would have expected the player's suicide.
Former linebacker's apparent suicide, three years after retiring, renews denunciations of football's culture of toughness and the incidence of head injuries. Junior Seau had sustained multiple concussions, friends and family say.
The former Charger, Dolphin and Patriot linebacker died at his California home on Wednesday.