I think a couple other factors related to beer help cause the beer belly as well: the way people drink beer versus other drinks and how getting drunk can lead to eating a lot of food you don't need. To me, it seems like beer consumption is often different than a lot of other forms of alcohol in that people often sit around and drink multiple beers at a time, even if they aren't planning on getting drunk. I think most of the time I drink beer is hanging out with friends or watching some sporting event. If you're sitting around, the law of inertia kicks in and having an extra beer or two becomes pretty easy. All that means more calories you're taking in and not necessarily working off. The second factor is pretty self explanatory. Every time I get drunk, I want junk food. I mean, for awhile, Taco Bell's whole marketing scheme was based around 4th Meal ie: drunk people wanting food late at night. If you couple those things together, it's no wonder people gain weight.