Some Types of Alcohol (Especially Beer)
Alcohol provides more calories than carbs and protein, or about 7 calories per gram.
However, the evidence for alcohol and weight gain is not clear.
Drinking alcohol in moderation seems to be fine and is actually linked to reduced weight gain. Heavy drinking, on the other hand, is associated with increased weight gain.
The type of alcohol also matters. Beer can cause weight gain, but drinking wine in moderation may actually be beneficial.
If you are trying to lose weight, you may want to consider cutting back on alcohol or skipping it altogether. Wine in small amounts seems to be fine.