Before he shot himself fatally in the chest Thursday, the former Chicago Bears defensive back Dave Duerson sent family members text messages requesting that his brain tissue be examined for the same damage recently found in other retired players, two people aware of the messages said Saturday night.As a longtime force in the N.F.L. players union, Duerson, 50, was keenly aware of chronic traumatic encephalopathy, the degenerative brain disease linked to depression, dementia and occasionally suicide among more than a dozen deceased players. He had expressed concern in recent months that he might have had the condition, said one person close to him who spoke on condition of anonymity.
I don't even know what to say, anymore.
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