Abdominal gas, even though normal, can cause pain, belching, burping, bloating and flatulence. Lower stomach gas can be caused by how and what you eat or a medical condition.
Swallowing air while you eat or drink can cause lower stomach gas. The air becomes a bubble of gas in your stomach. Additionally, while smoking, chewing gum or coughing, you may also swallow air.
The types of foods you eat may cause stomach gas. The body does not always digest and absorb some foods with sugars, fibers and starches.
Foods that Can Cause Gas
According to the National Digestive Diseases Information Clearinghouse, foods that may cause lower stomach gas include: beans, broccoli, cabbage, cauliflower, milk and dairy products, artificial sweeteners, peaches, prunes, tomatoes, citrus fruit, brussels sprouts, radishes, onions, pasta, wheat, lettuce, raisins and carbonated drinks.
Irritable Bowel Syndrome
Irritable Bowel Syndrome (IBS) is a health condition that contributes to excessive lower stomach gas. Sometimes the food you eat can effect IBS.
Gastroesophageal Reflux Disease (GERD) is also a medical condition that causes excessive stomach gas. GERD is exacerbated by the foods you eat and how much air you swallow while eating.