How does drinking beer affect swelling of intistine?

In, not of: Beer is composed of many things including water, grains and carbonation. The barley and yeast in beer ferment in our digestive systems and they produce gas. In addition, the carbon dioxide in beer is what makes it foamy (produced by the many chemical reactions that make beer, beer. Also, swallowing air when drinking adds to the air in our intestines. The intestines themselves do not swell.