http://profootballtalk.nbcsports.com/2011/11/16/forrest-gregg-links-his-parkinsons-disease-to-concussions/Pro Football Hall of Famer Forrest Gregg has revealed that he has Parkinson’s Disease. And he thinks his football career may have caused it.
Gregg told the Associated Press he, his family and his neurologist believe the disease may be linked to concussions he suffered during his playing career.
The 78-year-old Gregg, who was diagnosed last month, said he doesn’t know how many concussions he suffered as a player, either at SMU in the 1950s, or with the Packers and Cowboys from 1956 to 1971.