Junior Seau's family will allow researchers to study his brain for signs he was suffering from damage done by concussions sustained during his 20-year NFL career. The San Diego County medical examiner ruled Seau's death a suicide on Thursday, a day after the former linebacker was found dead at his home with a gunshot wound to the chest. "The family was considering this almost from the beginning, but they didn't want to make any emotional decisions," Chargers team chaplain Shawn Mitchell said. "And when they came to a joint decision that absolutely this was the best thing, it was a natural occurrence for the Seau family to go forward."