I have known a few people with this ailment. It can take 20 years in some people or less in others. It depends on the liver damage one has sustained (how much of an alco they are and for how long they have been boozin it up) Also depends on when the person finds it out as to what stage it is at. You cant really say as it also depends on what the person may do to extend their life once they know about the condition. Do they drop the boozen or keep living like there is no tomorrow... To many variables to answer as a fact.