Did O.J. have concussion trauma? CTE doctor says yes

395562 04: Former NFL star O.J. Simpson talks with one of his defense attorneys on the first day of jury selection October 9, 2001 at a Dade County courtroom in Miami, FL. Simpson, who was acquitted in 1994 in the murders of his ex-wife and her friend, is on trial for allegedly attacking a motorist in the Miami suburb of Kendall, Florida in December of 2000. If found guilty, Simpson could face up to 16 years in prison. (Pool Photo/Getty Images)

Credit: Getty Images

Credit: Getty Images

395562 04: Former NFL star O.J. Simpson talks with one of his defense attorneys on the first day of jury selection October 9, 2001 at a Dade County courtroom in Miami, FL. Simpson, who was acquitted in 1994 in the murders of his ex-wife and her friend, is on trial for allegedly attacking a motorist in the Miami suburb of Kendall, Florida in December of 2000. If found guilty, Simpson could face up to 16 years in prison. (Pool Photo/Getty Images)


The doctor whose discovery of a degenerative brain disease in football players inspired the hit movie "Concussion" says he’d bet his license that O.J. Simpson has the disease — known as chronic traumatic encephalopathy or CTE.

Dr. Bennet Omalu said Simpson displays classic symptoms of CTE such as explosive and impulsive behavior, impaired judgment, criminality and mood disorders.

The strongest evidence that Simpson may have CTE, Omalu said, is his college and professional playing years.

>> Why you should watch the movie 'Concussion'

“He was exposed to thousands of blunt force trauma of his brain,” Omalu said.

“I would bet my medical license on it.”

CTE is believed to be caused by repeated blows to the head. It has been found mostly in athletes who play contact sports, such as football. The condition is not diagnosed until after death from an examination of the brain.

Omalu, a soft-spoken forensic pathologist, challenged the NFL in 2003 with findings that repeated trauma to the brain was causing players to lose their minds.

>> Read more trending stories

Simpson, one of the most famous running backs in football history, was charged and acquitted in 1995 of the bloody slashing death of his ex-wife, Nicole Brown Simpson, and her friend Ron Goldman.

Simpson lost a wrongful death civil suit brought against him by the families of Goldman and his ex-wife. He was ordered to pay $33.5 million in damages.

In September 2007, Simpson was arrested in Las Vegas for armed robbery after attempting to steal sports memorabilia that he claimed belonged to him. The following year — 13 years to the day after being acquitted in his criminal trial — he was found guilty of robbery and kidnapping, and sentenced to up to 33 years in prison.