Excess flatus has a variety of causes, including swallowing too much air; eating foods high in fiber, fructose or sorbitol; and having medical conditions such as gastroenteritis and lactose intolerance, according to Healthline. In some cases, excess flatulence, or gas, is caused by irritable bowel syndrome and celiac disease.
Gastroenteritis is inflammation of the digestive tract that is caused by viral, bacterial or parasitic infections, notes Cleveland Clinic. People are often infected from contaminated food or water, contact with an infected person and dirty utensils. Other symptoms include fever, vomiting and nausea.
Lactose intolerance occurs when the body cannot digest the lactose sugar, explains the National Institute of Diabetes and Digestive and Kidney Diseases. The condition is caused by a lack of enzymes that digest lactose before it reaches the colon. When undigested lactose ferments in the colon, it creates symptoms such as gas, nausea, diarrhea and abdominal pain.
Irritable bowel syndrome is a disorder of the lower bowel that causes symptoms such as abdominal pain and excess gas, according to Cleveland Clinic. Causes include medications, certain foods, emotional stress and excess bacteria in the gastrointestinal tract.
Celiac disease is a digestive disorder that occurs when the immune system reacts to gluten, notes Healthline. Adults with celiac disease experience symptoms such as gas, arthritis, fatigue, seizures and bone fractures.