I have had IBS - D&C for a little under 2 years with no let-up, i.e. 24/7. In desperation, I contacted Dr Nick Read at the IBS Network and he told me to try a FODMAPs diet about which I had previously never heard. I started it 4 weeks ago and the results (which began almost immediately) have been incredibly good and get better every day - unless I have inadvertently eaten something that should have had a red flag attached to it. The information on the web re. FODMAPs is sketchy and often contradictory and it takes a bit of time and effort to find out precisely which foods can or can't be eaten. It seems that the best thing to do is to cut out everything that appears in common on the appropriate advisory sites and, if you get an improvement, but still have some residual problems, Google the foods you think might be affecting you adversely to check on their FODMAP levels - you'll usually find the info you're looking for eventually even if you get to page 22 or higher in your search! If you've tried everything else (as I had) for your IBS and nothing has worked, do give this diet a go, it could be the answer for you just as it has been for me.