Singer Ozzy Osbourne reportedly died of a heart attack when he passed away on July 22 at the age of 76. Cardiac arrest, coronary artery disease and Parkinson’s disease with autonomic dysfunction were ...

A death certificate filed at a register office in London revealed that Ozzy Osbourne's cause of death was a heart attack.

Ozzy Osbourne, the legendary frontman of Black Sabbath and a pioneer of heavy metal music, died at the age of 76 ...