Study: Duerson had brain damage at time of suicide

This breaks my heart. Tough guy on the field, but too many knocks cost Dave Duerson. I don't know the answer.
Study: Duerson had brain damage at time of suicide
BOSTON – Dave Duerson, a former NFL player who committed suicide in February, had "moderately advanced" brain damage related to blows to the head, according to the researcher who made the diagnosis.