Black Sabbath frontman Ozzy Osbourne died following his battle with a genetic form of Parkinson's disease, while a brain expert says the singer's lifestyle could have contributed.

Ozzy Osbourne died at 76, following a battle with Parkinson’s disease. Here's what to know about the disease and his diagnosis.

According to the Parkinson’s Foundation, Parkinson’s disease is a progressive neurodegenerative disorder that affects dopamine-producing neurons in the brain, resulting in both motor and non-motor symptoms including tremors, limb rigidity, cognitive impairment, depression, and balance issues.