I have suffered with IBS for over 10 years and when I saw people on medication controlling their symptoms I was jealous. Now I am in some control of most of my symptoms without drugs and am watching my friends go down the route of drugs no longer working, How you ask.
A friend suggested that I followed a completely Gluten free diet as I had noticed that if I ate too much bread or foods containing flour and gluten It would kick off my IBS. I was gobsmacked at how many day to day foods contained the one ingredient that appeared to be the bane of my existence. but three months later not only had it seriously reduced the attacks I had but I had also started to lose weight.
but the even better news for me was that ethnic foods mostly did not contain Gluten so curry's in gravy out.
Try It what have you got to lose, If it helps one person its worth the post.