During an interview on the 'Today' show, Ozzy Osbourne tells Jenna Hagar (daughter of former President George W. Bush) that he's the perfect person to dish medical advice because there isn't a pill or ailment he isn't familiar with. Plus... he's a hypochondriac.

Readers of Osbourne's column in Rolling Stone are already familiar with the no-nonsense advice he serves up in his new book 'Trust Me, I'm Dr. Ozzy.' He tells Hagar that many people -- especially guys -- need a kick in the pants when it comes to strange lumps and rashes. "Go see your doctor, that's what they're there for," Osbourne says with conviction. (Peter Criss of Kiss told us the very same thing just yesterday!)

He's visited the doctor frequently during his 40 year rock career. Often it was to treat some drug or alcohol induced indiscretion, but Osbourne is also a hypochondriac. He says that his paranoia led to his wife Sharon's cancer diagnosis, and early detection saved her life.

"I'm sober but I'm still crazy," Osbourne says (the video below comes with subtitles). Sharon keeps him honest, she even hung a picture of her eyes in his recording studio to remind him to stay sober. The Prince of Darkness tells a story of a rough time in New York, when all he wanted was a cuddle and to hear everything would be alright. "I'd go to Sharon, 'I think I'm dying.' And Sharon goes, 'Die quietly, I got an appointment at 9 o'clock.'"

Osbourne moves slower, but these days he gets around quickly in his new Ferrari. The car is the first he's ever owned as he couldn't get his driver's license until recently. It's another benefit of sobriety, he says.

Watch Ozzy Osbourne's Appearance on the 'Today' Show

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