According to a story published by ESPN's Peter Keating, at the time of his death, Chris Henry suffered from chronic traumatic encephalopathy, which is the result of repeated blows to the head. According to Keating, researchers are trying to discover a link between CTE and athletes. Jake talked about this in more detail, but the summary is this: researchers believe that that CTE is linked with athletes.
On Monday around noon, a press conference is scheduled to talk about their test results on Chris Henry and, most likely, talk generally about their research. Locally, Channel 12 will air the press conference.