Dr. DeWitt is a Vanderbilt University graduate who earned a full athletic scholarship after his first semester. He went on to become the starting defensive end for the next four years and was awarded The Wade Looney Award for outstanding work ethic. He continued his football career with the NFL 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 from Los Angeles Chiropractic College. He is practicing in Orange County, at Bergman Family Chiropractic, specializing in concussion assessment, advanced sports nutrition, natural vision correction techniques and more.

Dr. DeWitt can be heard on several radio shows from LA Talk Radio to ABC News Radio. He speaks on the future of sports as well as other natural ways to optimize brain function, eyesight and overall productivity.

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. Get more information at DrJohnDeWitt.com

He has been happily married to Cathy DeWitt for over nineteen years. They live in Huntington Beach, CA with their two adorable dogs, Ricky and Lucy.

We Proudly Support 
Gridiron Greats Assistance Fund

Four to five million concussions occur annually, with rising numbers among middle school athletes. 

90-95% of most diagnosed concussions do not involve a loss in consciousness. 

An estimated 5.3 million Americans live with a traumatic brain injury-related disability.

Five million Americans suffer from Alzheimer's and the number is expected to reach 16 million by 2050.

It's the 6th leading cause of death in America killing more than breast cancer and prostate cancer COMBINED.

1 in 3 seniors dies from Alzheimer's or some other form of dementia.


Protect the future of sports by providing a second layer of protection from concussions and help parents rest easy knowing they are doing everything they can to protect their kids while allowing them to learn the vital life lessons team sports provide. 

Help ease the strain on the 5 million Americans suffering from Alzheimer’s and the 15 million Americans that provide them unpaid care.


The average NFL player in 1970 earned about $24,000/year. Most had to work second jobs to pay the bills. Today, these same warriors are struggling to pay for things such as hearing aids. They've had multiple knee and hip surgeries and suffer cognitive and emotional dysfunction. 

Many of these valiant warriors that entertained us on Monday Night Football, are now sliding into the abyss of Alzheimer's and other forms of dementia. 

That is why a portion of all proceeds from BRAINMED™ will go directly to the Gridiron Greats Assistance Fund.