<<Disclaimer: Verify this information before applying it to your situation.>> Most people suggested eating whole foods (nothing with additives or preservatives) for a couple weeks to see if that works then slowly going back to eating those foods to see what foods cause the problem. A couple people suggested the specific carbohydrate diet. It's a really restricted diet which is supposed to help people with gastrointestinal problems. I was also sent some web sites that may help some people but I didn't find much. The sites were www.enterolab.com. That is Dr. Fine's web site. And www.gsdl.com. That is Great Smokies Diagnostic Lab. These sites may be helpful to people who are trying to find out if they have celiac but I didn't find them helpful because I already know I have it. Thank you for all your responses. Eileen