One of the topics that is off limits as this mostly stunt actor promotes the latest installment of his long running franchise, is the dementia he has at such an early age because of the movies/show that made him famous.

Johnny Knoxville

Jackass

Johnny Knoxville on Possibly Retiring from Jackass Franchise: ‘I’ve Put My Family Through Enough’

Jackass’ Johnny Knoxville has put his body through hell for over 20 years — all for the sake of a good laugh.

In the upcoming Jackass Forever, Knoxville gets leveled by a bull in an outdoor ring while dressed in full Matador gear. He suffered a broken wrist and broken ribs in addition to a concussion.

At 50, the father of three might be finally ready to throw in the Jackass towel.

“My doctor said I can’t take another shot to the head, I’ve had so many concussions. I put my family through enough, quite honestly. I don’t think I have anything else to prove,” he tells PEOPLE in this week’s issue, on newsstands Friday.

Jackass Forever, the fourth film from original stars Knoxville, Steve-O, Chris Pontius, Dave England, Wee Man and more, ups the ante with stunts involving bears, bulls, scorpions, and hordes of bees. In one harrowing — and hilarious — sequence, Knoxville gets shot out of a cannon. – Source

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