Belching (distention), also known as burping, is the act of expelling gas from the stomach out through the mouth. The usual cause of belching is an inflated stomach caused by swallowed air. The distention of the stomach causes abdominal discomfort, and belching expels the air, thus relieving the discomfort caused.

The common reasons for swallowing large amounts of air are gulping food or drink too rapidly, anxiety, and carbonated beverages. People are often unaware that they are swallowing air.

Everyone knows that when they have mild abdominal discomfort, belching often relieves the problem. This is because excessive air in the stomach often is the cause of mild abdominal discomfort. As a result, people belch whenever mild abdominal discomfort is felt, regardless of its cause.


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