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What causes a burp or flatulence?

In: Human Physiology [Edit categories]

Answer:

A burp and releasing gas (fart) are two separate phenomena, usually with two separate causes.

A burp or belch is caused when swallowed air comes back up the esophagus from the stomach. This can also be bubbles from soda, beer, or other drinks, or gases caused by digestion of food.

Flatulence is primarily caused by fermentation of waste in the large intestine, where bacteria feed on and break down organic molecules that remain in food. It contains nitrogen, sulfur, and methane. Drinking large quantities of bubbly drinks (soda, beer) can also result in flatulence as these liquids can still contain dissolved carbon dioxide when they reach the intestines.

First answer by ID1917663528. Last edit by Dfoofnik. Contributor trust: 2556 [recommend contributor ]. Question popularity: 2 [recommend question].

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