Jim McMahon, like many retired pro football players, suffers from the effects of multiple hits to the head. For McMahon, it led to intense pain coupled with pressure in his head, as well as memory loss. There was no escape from the throbbing each heartbeat pounded his head with. Medically, McMahon has been diagnosed with early onset dementia, memory loss, severe headaches and depression. It was the next diagnosis, from a structural chiropractor, that would drastically improve his life.