I also have similiar fiber-tolerating problems. For so long I thought it would be the cure for my constipation! Now I'm learning what foods I can and cannot tolerate: white rice, cooked vegetables in small amounts (brocolli, peas, carrots mostly), fish and eggs seem to be okay too but nothing has proven to help my constipation fully. Something a little odd, chocolate seems to be the only thing that helps me go. Coffee makes my constipation much worse, but dark chocolate helps. Does anyone else experience this? I'm curious about knowing what foods work for other people who are sensitive to wheat/sugar/fiber/dairy? And how anyone else deals with these issues in general? thank you!