Ozzy Osbourne had a mutation in his genes which may account for how he survived his rock star levels of drinking and drug use

By Marissa Davison BIRMINGHAM, England (Reuters) -Thousands of heavy metal fans lined the streets of Birmingham on Wednesday for the funeral procession of Black Sabbath frontman Ozzy Osbourne, who died earlier this month at the age of 76.

Ozzy Osbourne's children will be there to say their final goodbyes to their legendary father, who will be laid to rest shortly following a public funeral procession