I wish only got gas when I drank beer! Maybe it has something to do with the yeast or something? I drink a lot of soda, which also has no fat, but it can give me stomach aches and gas from the sugar (that's my theory, anyway). Although I can drink water and get a stomach ache, so maybe I have no clue! But if beer gives you so much gas, don't drink it. Or try a different brand or a light beer.
~Aimee, 28 CF w/ PA & MRSA