This is hard to give a definitive answer to. Typically, it’s believed that if someone consumes more than 1.5 ounces of alcohol daily for an extended period of time, they will do damage to their liver. That period of time fluctuates from person to person and a number of alcohol factors in as well. 1.5 ounces of alcohol roughly equates to drinking about three cans of beer, 3 glasses of wine, or 3 shots of hard liquor.