Why Baby has a Gas problem?

My son also had this problem and finally at his check-up the pediatrician asked me if a ate/drank a lot of dairy. Dairy is my favorite thing! I ate and drank it all day every day. So I cut out pretty much all dairy out of my diet (boo for me) and within a day or 2 my son's tummy troubles were totally gone! It's been 6 months now and I am still dairy free and he is a happy baby with no tummy troubles. Also things like broccoli and cabbage can cause the same problems.