I have some more questions:1. Do people with IBS tend to lose weight or be thin? I used to weigh under 100 lbs. until I was in my late 30's then I started to gain weight. I am now 61 and am 5'2" and weigh 140lbs. 2. How do carbinated drinks affect you? I sit better to stay away from them?3. Which is better for constipation? Laxatives or warm water enemas?4. I tried Metumucil at one time. It made me worse. Has anyone else had this problem?5. Does anyone take Donnatal? I have used it before and have some now. It doesn't seem to help much.