What does alcohol do to your body if just beer?

Depends on amount,: One 12 oz can of beer has same alcohol as one 5 oz glass of wine and 1&1/2 of spirits. So six beers equal to six shots. In moderation not a problem in excess same thing as too much of other alcoholic beverages. Though calorie content is usally higher with beer, could have increase weight gain along with other complications that happen with any type of alcohol. Plenty of alcoholics just drink beer.