What Makes Us Burp?

stinky, gases, smelly, burp
Extra gases collected in the gut cause burping.
(Image credit: Dreamstime.)

The only thing grosser than a burp is what causes it: bacteria deep in your belly. And, of course, extra gas and fizzy drinks.

Billions of tiny bacteria hang out in your intestines to help digestion. They turn some of the undigested food into vitamin K and vitamin B. In the process, bacteria release smelly gases like methane, which make us burp … and fart !

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Corey Binns lives in Northern California and writes about science, health, parenting, and social change. In addition to writing for Live Science, she's contributed to publications including Popular Science, TODAY.com, Scholastic, and the Stanford Social Innovation Review as well as others. She's also produced stories for NPR’s Science Friday and Sundance Channel. She studied biology at Brown University and earned a Master's degree in science journalism from NYU. The Association of Health Care Journalists named her a Centers for Disease Control and Prevention Health Journalism Fellow in 2009. She has chased tornadoes and lived to tell the tale.