Most people with IBS-C (IBS with constipation) benefit by mixing the approaches described in this article. You have have to take an "all of the above" approach. Also, keep a diet diary for a few weeks-- sometimes, certain foods or food combinations can make IBS-C worse. The diet diary should help you figure this out. Avoid foods with added sugars, fried foods, fatty foods or highly processed foods-- these tend to cause more constipation. Include a quality probiotic and try some fermented foods (sauerkraut, kimchee or keffir). It is often a process of trial and error to find what works for you-- so try to be patient!