CHICAGO (AP) -- That familiar sadness struck Chris Nowinski when he heard about former NFL player Corwin Brown's recent standoff with police and self-inflicted gunshot wound.
He wasn't shocked, though, when Brown's family suggested brain damage from his football career might be to blame.
As the CEO of the Sports Legacy Institute at Boston University, Nowinsky has studied the effects of repeated blows to the head. He spoke Monday at a workshop for high school coaches, administrators and trainers in Chicago, which in January passed an ordinance requiring public and private schools to take athletes who show concussion symptoms off the field.
It also fines schools if they allow youngsters to participate with concussions.