Ozzy Osbourne lived with Parkinson's disease for years before his death. Here's what you need to know about the neurodegenerative disease.

Ozzy Osbourne, the lead singer of British rock band Black Sabbath, died at age 76 on Tuesday. Osbourne’s health had been front and center for several years after announcing he’d been diagnosed with Parkinson’s disease in January 2020.

Osbourne died this past Tuesday, at the age of seventy-six; his family didn’t announce a cause, but he had previously disclosed that he had Parkinson’s disease. By the time of his death, Osbourne had been doubly transformed by Iommi’s good idea about “evil.