"That's a very hard question to answer," said Bailes. "The workings of the human brain, especially, when … violence of that type is carried out — I don't think anybody in science or medicine knows. But I do think … that it did have a major impact. And I think there are other cases where this sort of brain damage does have very abnormal, uncharacteristic behavior, extreme behavior, including suicide."
Bailes believes Benoit's trademark violent behavior in the ring didn't help.
"I think by now, everyone's seen the pictures of him jumping off the ladder, and jumping off the top rope, and being hit over the head with chairs," he said. "And so, none of that is good."
"There's a major safety issue in the wrestling industry today," said Michael Benoit. "When you start introducing ladders, and tables, and chairs, that's real — there's nothing fake about that. I asked [Chris] one time, I said, 'When you get hit in the head with a chair, does it hurt?' He said, 'You're damned right it does, Dad.'"
Benoit says he is angry about the way his son has been treated, and about what happened to him during his wrestling career.
"Let me put it this way. The company that I work for — the number one priority of the person that owns the company is the health and safety of the people that work in the company. I wish that the same could be said for the company that Chris worked for."
"Nightline" contacted World Wrestling Entertainment for a response, and they sent a statement. They called the analysis that concussions might have led to Benoit's murderous rampage, "speculative," and went on to say that "WWE can certainly understand the anguish of a father having to deal with the fact that his son allegedly murdered his wife and young son … We respect the desire of that father to do whatever he can to find some explanation."
"Wresting has got completely out of hand," said Benoit, who now asks the question that every parent who has lost a child to suicide asks: Why?
"He was a kind and gentle man," said Benoit. "We gotta remember that this story isn't only about my son. We lost our daughter-in-law. We lost our grandson. Parents shouldn't have to bury their children."