You can't tell an alcoholic lover to stop drinking alcohol because it causes damages in his system, to be honest the reply you'd get would even get you tired of advising them to stop. Too much of alcohol causes a lot of damages in the system, if not that it can make you start doing things out of other, you can be saying things that doesn't make sense abusing people around you. After some time if they tell you all you did, I believe you won't even agree. So is just not healthy to me.