Today, scientists announced that Duerson's brain tissue showed "moderately advanced" evidence of chronic traumatic encephalopathy, a dementia-like brain disease afflicting athletes exposed to repeated brain trauma.
Just read this on the CNN site
"Dave Duerson had classic pathology of CTE and no evidence of any other disease," said Dr. Ann McKee, a neuropathologist with the Bedford VA Medical Center, and co-director of the Boston University School of Medicine Center for the Study of Traumatic Encephalopathy. "He had severe involvement of areas that control judgment, inhibition, impulse control, mood and memory."
CTE has been found in the brains of 14 of 15 former NFL players thus far studied at the center. Their cases share a common thread -- repeated concussions, sub-concussive blows to the head, or both. The picture beginning to emerge from these cases is that trauma could be causing brain damage.