Belching or passing gas (flatus) is natural and common. We all have gas in our intestinal tract. Gas can cause a sense of bloating (fullness), belching, abdominal cramps, and flatulence (gas). These symptoms are usually brief and resolve once gas is released by belching or flatulence. Some people can be more sensitive to even normal amounts of gas and develop symptoms.
The amount of gas produced by the body depends upon our diet and other individual factors. Certain foods and medical conditions can cause excessive amounts of gas.