I've been experimenting between getting most of my daily fiber between either Cereal or Oatmeal, and the reason I even consider cereal is because it tends to have more insoluble fiber than oatmeal does (which means potentially less flatulence, AFAIK). I don't suffer from Diarrhea at all, but rather mostly constipation if I refrain from eating high fiber foods. Having said that, should I be looking for higher sources of soluble fiber, or insoluble fiber in my foods to counter constipation? If soluble fiber is the answer, or even if it isn't, is oatmeal a good option to include in an IBS diet? I would also like to add, that I tend to eat very little and have had a test done that estimated that I was only taking in about an average of 1,200 calories a day. I am a 25 yr old male, and I weigh 153 lbs, so I am getting only about 50% of my recommended daily calorie intake. And since the daily recommended percentage of fiber is based on a 2,000 calorie diet, should I inherently require less fiber since I only get barely over half of that? The reason I am concerned about getting too much fiber, is because it sometimes can cause more harm than good, and either cause excessive flatulence/bloating, or causes me to void 2-3 times a day which really irritates my symptoms. Thanks in advance for your advice.