Abdominal bloating is a condition in which the belly (abdomen) feels full and tight. Your belly may look swollen (distended).
Common causes include:
- Swallowing air
- Gastroesophageal reflux (GERD)
- Irritable bowel syndrome
- Lactose intolerance and problems digesting other foods
- Small bowel bacterial overgrowth
- Weight gain
The oral diabetes medicine, acarbose, and medicines or foods containing lactulose or sorbitol, may cause bloating.
More serious disorders that may cause bloating are:
- Ascites and tumors
- Celiac disease
- Dumping syndrome
- Ovarian cancer
- Problems with the pancreas not producing enough digestive enzymes (pancreatic insufficiency)
You may take the following steps:
- Avoid chewing gum or carbonated drinks. Stay away from foods with high levels of fructose or sorbitol
- Avoid foods that can produce gas, such as Brussels sprouts, turnips, cabbage, beans, and lentils.
- Do not eat too quickly.
- Stop smoking.
Get treatment for constipation if you have it. However, fiber supplements such as psyllium or 100% bran can make your symptoms worse.
You may try simethicone and other medicines you buy at the drugstore to help with gas. Charcoal caps can also help.
Watch for foods that trigger your bloating so you can start to avoid those foods. These may include:
- Milk and other dairy products that contain lactose
- Certain carbohydrates that contain fructose, known as FODMAPs
When to Contact a Medical Professional
Call your health care provider if you have:
- Abdominal pain
- Blood in the stools or dark, tarry looking stools
- Heartburn that is getting worse
- Weight loss
PR Gibson, SJ Shepherd. Evidence-based dietary management of functional gastrointestinal symptoms: The FODMAP approach. J Gastroenterol Hepatol. 2010 Feb;25(2):252-8.
Ohge H, Levitt MD. Intestinal gas. In: Feldman M, Friedman LS, Brandt LJ, eds. Sleisenger & Fordtran's Gastrointestinal and Liver Disease. 9th ed. Philadelphia, PA: Saunders Elsevier; 2010:chap 16.
Reviewed By: Jenifer K. Lehrer, MD, Department of Gastroenterology, Frankford-Torresdale Hospital, Aria Health System, Philadelphia, PA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.