As most of you suffering from IBS know, too much insoluble fibre can make symptoms worse. This includes bran flakes, all bran, wholegrains, and too much fruit and vegetables. For some a bowl of bran in the morning is like eating razor blades for the gut and can cause inflammation. Find the cause of your IBS first. Eat temperate foods ie not too hot or cold, choose soluble fibre like porridge. Try probiotics and keep a food diary to see if there are any obvious foods causing the pain. If you are still worried, get referred to a gastroenterologist, rule out coeliac disease, lactose intolerance and see a nutritionist for a stool test to test for gut flora, parasites, yeasts and candida which may be the initial cause anyway.