Gas (Flatulence)

What Is It?

Flatulence is the passage of intestinal gas (flatus) through the rectum. Passing gas is normal, and every human being does it at least 14 times a day, consciously or unconsciously. Sometimes flatulence happens more often than expected, and this can become an embarrassing problem. Extreme flatulence can even interfere with a person's ability to work and socialize comfortably with other people.

Most cases of flatulence are related to factors that can be controlled. This is because intestinal gas usually comes from two sources — swallowed air or the work of intestinal bacteria on undigested food.

To continue reading this article, you must login.
  • Research health conditions
  • Check your symptoms
  • Prepare for a doctor's visit or test
  • Find the best treatments and procedures for you
  • Explore options for better nutrition and exercise
Learn more about the many benefits and features of joining Harvard Health Online »