It’s healthy to pass gas 13 to 21 times per day. Belching or burping occurs when gas is passed through the mouth, while flatulence occurs when gas passed through the anus.


Gas does not typically have an odor. Bacteria found in the large intestine—colon—will also release gas that contains a small amount of sulfur. This causes the odor.


Swallowed air or food breaking down in your large intestine causes gas. The amount of gas you have in your digestive tract can be reduced by


  • Avoiding lactose-containing products
  • Increasing your water intake and avoiding carbonated drinks
  • Eating slowly to allow less air to be swallowed


Your doctor can prescribe you medications or suggest dietary changes to reduce gas, pain, and bloating.

The information AGH supplies on this website should not be used as a substitute to your regular physician’s medical advice. Your research from this website should not be used as a medical diagnosis. Consult your regular physician for diagnoses and treatments. The information found on this website is for educational purposes only. A formal consultation with a surgeon or doctor is needed before pursuing surgical procedures or medical treatments. Individual results may vary.