His was a suicide with a macabre twist. In February, former Chicago Bears safety David Duerson shot himself in the chest, but not before leaving behind a note requesting his brain be studied for evidence of a disease striking football players.
The plaintive note read, "Please, see that my brain is given to the NFL's brain bank."
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.
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