United Kingdom, July 18 -- Alice Cooper believes Ozzy Osbourne sacrificed his health for "rock 'n' roll".

Veteran rocker Ozzy, 76, has retired from live performances after making his final appearance on stage at the recent Black Sabbath reunion gig at Villa Park in Birmingham, and Alice, 77, fears his old friend wasn't in "good shape" and worries he dedicated too much of his life to being a rock star.

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 suffer...