I eat the Fiber One brownies pretty regularly - I don't usually have a stomach for the big bowls of cereal I used to have as a kid, but I usually want to have something sweet to get my day going, you know? They work!

I'd say I eat somewhat more than the average person (I'm 6'2", waddayaexpect!), but I never have stomach problems. I always assumed I was just blessed with a stomach of steel, but it could just be enough fiber in the diet. I do like my Smart Pop popcorn as well, and that's pretty fibery! Maybe I'll go a week without getting the bars and see if that changes anything.