What causes Abdominal sounds?
Last updated September 7, 2026.
Abdominal sounds, called borborygmi, are the normal noise of muscle contractions pushing gas, fluid, and food through your intestines. Volume goes up when your gut is mostly empty, because there is less food to muffle the movement, which is why the loudest rumbles often come right before a meal. Swallowed air adds to it, so eating fast, drinking carbonated beverages, chewing gum, and smoking all make you noisier. Foods that ferment in the colon, including beans, onions, cabbage, high-fiber cereals, and sugar-free sweeteners like sorbitol, produce extra gas hours after you eat them. Lactose intolerance, celiac disease, and irritable bowel syndrome turn up the sound along with bloating, cramping, and looser or harder stools. Eating slowly, sitting upright after meals, walking, and cutting one suspect food at a time for two weeks usually tells you what is driving it.
What to do
- Slow the meal down: Eat over at least 20 minutes and skip gum, straws, and fizzy drinks to swallow less air.
- Test one food at a time: Drop dairy, then sugar-free sweeteners, then high-gas vegetables for two weeks each and track the difference.
- Keep a simple log: Note what you ate, the timing of the noise, and any bloating or stool changes so a pattern shows up.
- Move after eating: A 10 to 15 minute walk helps gas move through instead of sitting and building pressure.
- Add fiber gradually: Increase whole grains, beans, and vegetables over several weeks and drink water so your gut adjusts.
- Know the red flags: Call a clinician for blood in stool, weight loss, fever, persistent vomiting, or a hard swollen belly with no gas passing.
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