Natural ways to help /cure ibs?

IBS: There are many natural cures claimed to treat ibs, but which ones are really effective, this is unclear. It'd be nice to know what you've already tried. First, try to identify foods known to cause/aggravate it. Common ones would be caffeine, dairy, fried foods. Try to drop breads made by artificial yeast. Use a natural starter. Try triphala and slippery elm if you have not yet.