Dave Duerson NFL CongressAPDuerson and former Cowboy Darryl
Johnston testify before Congress in 2007.  Football fans were
saddened to learn of the death of former Chicago Bear Dave
Duerson on Thursday, but now they may be outraged to hear that
the 50-year-old committed suicide — and he believed that brain
injuries from playing football might be to blame.  Last night,
the Miami-Dade County medical examiner ruled Dureson's death a
suicide, from a self-inflicted gunshot wound to the chest.  In
addition, NBC Chicago reports that Duerson sent to a text
message to his loved ones asking that his brain be donated to
NFL research after his death.  Duerson's brain will in fact be
sent to Boston University's Center for the Study of Traumatic
Encephalopathy. They have previously studied the brains of 14
NFL players and 13 of them were found to have CTE, a
degenerative brain disease similar to Alzheimer's.  The news
comes at a key time in the NFL labor negotiations as one of the
biggest sticking points continues to be the