Science a Gogo | Hits to Head May Spur Brain-Damaging Immune Response Yahoo! News (blog) Because the body is not used to seeing this protein in the blood, it may develop antibodies to it. The body produces antibodies to fight what it perceives to be a harmful substance. If these antibodies then find their way back into the brain, they ... Sports brain injury may actually be an autoimmune phenomenon Football Injuries May Trigger Harmful Immune System Response Study: Football players can suffer brain changes without concussions |