People with celiac disease can’t eat gluten because their bodies can’t process this protein found in wheat, barley and rye. But gluten sensitivity can also make you feel bloated, cause fatigue, GI problems, headaches and gain weight. Some people test negative to celiac disease but may have some reaction to gluten. To test sensitivity, try eliminating gluten for 2 weeks. In addition to known gluten foods, such as breads, check for other possible foods to eliminate, such as salad dressing and sauces.   Eat a whole foods diet with lean meats, veggies and rice and discard anything that comes pre-packaged. One person reports that she felt more refreshed and her tummy was flatter from eating high-quality protein and produce and she was able to create a healthier way of eating overall, whether she sticks with the gluten free diet for an indeterminate amount of time.