3 Serious Causes of Bloating Celiac Disease Gluten — proteins found in whole grains such as wheat, rye, barley, as well as foods like soy sauce, salad dressings, beer, and more — can cause bloating, gas, constipation and other GI issues in people with a gluten sensitivity (non-celiac gluten sensitivity) or a gluten allergy (celiac disease). But for people with a gluten allergy, gluten sparks an immune-system response that can damage the small intestine . Blood tests and bowel biopsies can determine if you have celiac disease. Irritable Bowel Syndrome (IBS) The exact causes of IBS are unknown, but one of the most common symptoms is bloating, according to Dr. Zighelboim. High-fiber foods and carbs like beans, broccoli, and cabbage, can aggravate IBS , according to the American Gastroenterological Association. IBS is one of the most commonly diagnosed disorders, affecting between 10-15 percent of U.S. adults . Lactose Intolerance About 65 percent of adu...