what causes intestinal gas
Facts about flatulence (gas), excessive, and chronic. 1  The definition of flatulence or intestinal gas is the state of having excessive stomach and/or intestinal gas (waste gas produced during digestion) that is usually released from the anus with sound and/or odor. Causes of excess gas in the digestive tract are swallowed air, breakdown of undigested foods, lactase intolerance, and.
Increased gas is not caused by the irritable bowel syndrome (IBS) or most parasitic or bacterial intestinal infections. It also is not caused by gastritis, gastric cancer, gallstones, cholecystitis, and pancreatitis or cystic fibrosis (unless there is maldigestion of food).