Alice Cooper knew he had to give up drinking alcohol when he started coughing up blood every morning.
The NO MORE MR NICE GUY rocker - real name VINCENT DAMON FURNIER - ended up replenishing his depleted stomach by receiving a potassium boost in hospital.
Recovering alcoholic Cooper says, "It got to the point where my body was telling me that I couldn't go on. I would have a rubbish bin full of beer by my bed, so before I even opened my eyes in the morning I could have a drink.
"Then I'd go to the bathroom to throw up blood because my stomach was rotting through not eating. Alcohol fools you into thinking you've eaten and you haven't.
"I had to go to hospital to get the potassium put back into my system. Then my life changed for good."