Dark Days Follow Hard-Hitting Career in N.F.L. - New York Times

"Ted Johnson helped the New England Patriots win three of the past five Super Bowls before retiring in 2005. Now, he says, he forgets people’s names, misses appointments and, because of an addiction to amphetamines, can become so terrified of the outside world that he locks himself alone inside his Boston apartment in bed with the blinds drawn for days at a time."