2002?
Was this problem revealed this recently? I thought it was common knowledge that football players have brain issues sustained from the NFL playing years way before 2002. Any Given Sunday touched upon this, and Ace Ventura Pet Detective.
We've seen the "old retired football guy" pretending to be still in the game, in Comedies for years before this movie.
Maybe it wasn't official until then, but I thought it was common knowledge that blows to the head = brain damage.