(HealthDay News) -- When your belly feels bloated, uncomfortably tight and full, your doctor may refer to it as abdominal bloating.

The U.S. National Library of Medicine offers this list of common causes:

• Swallowing air.
• Being constipated.
• Having too much gas in the bowels.
• Having lactose intolerance or other food intolerance.
• Eating too much.
• Having irritable bowel syndrome (IBS).
• Having a partial bowel obstruction.
• Having too much bacteria in the bowels.
• Having, in rare cases, a tumor.