Every once and awhile I come back to this web site to post what helped me deal with servere IBS. Cutting down on fat. I tried all the other stuff and it did nothing or made me sicker. The only other thing I can add is I had back surgery L5-S1 level. I don't know if that had anything to do with helping my IBS? There is a vegus nerve somwhere down there that can cause nausea, my main IBS symptom. Now 1 year later after surgery I can get some pretty werid nerve pain starting from tailbone right up the left side Colon. Good luck everyone