Dr. John DeWitt played with the Houston Oilers, NFL Europe Champion Scottish Claymores, Montreal Alouettes of the CFL, San Francisco Demons of the XFL, and several teams in the AFL including three seasons with the LA Avengers.  After retiring from football, Dr. DeWitt earned his Doctor of Chiropractic degree and after a friend's premature passing, is learning all he can about concussions and CTE. His ultimate goal is to have a clinic where those suffering with PTSD, CTE and Concussions can come to get treatment via nutritional advice, mental health counseling and chiropractic care. He has authored several, best-selling books on a variety of topics including Goal Setting, Golf, Concussions and CTE and a three-part series on Natural Vision Correction.