Alcohol has calories
Because alcoholics are already drinking large amounts of toxic-to-the-liver alcohol
every day, they are usually not health-conscious people.
So, they may be eating too much junk food and not exercising. Also, alcoholic drinks have lots of calories. Examples: 3 ounces of vodka/rum/whiskey = about 200 calories; 12 oz beer = 150 cal; 12 oz light beer = 100 cal; 6 oz wine = 170 cal.