Ozzy Osbourne, the gloomy, demon-invoking lead singer of the pioneering band Black Sabbath who became the throaty, growling voice — and drug-and-alcohol ravaged id — of heavy metal, died ...

Two weeks after Ozzy Osbourne died at the age of 76, his cause of death has been revealed as a heart attack. Throughout his life, he faced several health issues, including Parkinson's disease.