Alice Cooper believes Ozzy Osbourne sacrificed his health for "rock 'n' roll"

Alice - real name Vincent Furnier - told The Times newspaper: "Ozzy deserved that farewell [concert]. He survived rock'n'roll but not physically as well as he should have.

"I saw some of the show and he was not in great shape. People shouldn't give their whole lives, their health, to rock'n'roll. Life is bigger than that."

Ozzy has suffered a number of health setbacks over the years including spinal issues relating to a quad bike crash in 2003 and injuries from a subseuqnt fall, infections and a Parkinson's disease diagnosis.

However, he previously admitted that giving up booze and drugs after decades of addiction issues gave his health a boost but he's not completely sober as he still smokes marijuana occasionally.

During an appearance on the Madhouse Chronicles Podcast, Ozzy explained: "I am happier, but I am not completely sober. I use a bit of marijuana from time to time."

The rocker revealed his wife Sharon keeps a close eye on him to make sure he doesn't fall back into bad habits - and will even confiscate his joints if she finds them lying around.

He added: "Even with marijuana she will f****** find it and get rid of it."

Ozzy also previously revealed Sharon came up with the idea for the Black Sabbath reunion gig as a way of cheering him up after his health issues started to get him down.

He told the Guardian: "You wake up the next morning and find that something else has gone wrong. You begin to think this is never going to end.

"Sharon could see that I was in Doom Town, and she says to me: 'I've got an idea.' It was something to give me a reason to get up in the morning.'

"I thought: 'Oh, f****** hell, she's got an idea. Here we go."