Causes of Excessive Belching

Although belching is a physiological process, various conditions may lead to or cause excessive belching or burping, usually conditions that involve the stomach, duodenum, gallbladder, and esophagus. It may also be caused by lifestyle and dietary factors, such as the type of food eaten and the method of eating.

Digestive system diagram

It is important to note that belching is a normal part of human behavior and is needed to rid the stomach of excess gas that is swallowed when eating or produced during the process of digestion. However, excessive belching can become problematic if it occurs on a persistent basis and is paired with other symptoms, such as abdominal pain.

Physiological causes

Lifestyle and dietary factors may contribute to some cases of excessive belching. This may include swallowing air when eating or drinking or consuming certain food and drink, such as cabbage, cauliflower, broccoli, beans, and carbonated beverages.

It is commonly believed that most cases of excessive belching are associated with swallowing air or certain foods and drinks. However, this is not true as most cases of excessive belching are, in fact, related to diseases of the gastrointestinal tract. These are widely grouped as pathological causes and discussed in more detail in the following sections.

Hiatal hernia

A hiatal hernia is a condition that involves the extension of a portion of the stomach through the esophageal hiatus into the chest cavity. This alters the passage of food into the stomach and disrupts the mechanisms needed to prevent the backflow of stomach acid into the esophagus. In this case, periods of burping tend to come and go according to the stomach's changing position.

Small intestine bacterial overgrowth

Similar to the bacterial infection of the stomach, the small intestine can also sometimes be affected by bacterial overgrowth that may lead to excessive belching. Small intestine bacterial overgrowth (SIBO) usually affects the duodenum, which can lead to the production of gas and burping.

Infections of the stomach

Bacterial infections of the stomach, such as Helicobacter pylori (H. pylori), can lead to gas production and release from the stomach. As such, it may contribute to burping to some extent, although the volume of gas is thought to be slight. However, the bacterial infection also leads to an increase in the stomach's acidity, which can also contribute to the accumulation of gas and, hence, burping.

belchingImage Credit: Emily frost /

Food intolerance

Indigestion of or intolerances to certain foods can also contribute to excessive belching. This is because the nutrients remain in the gut for consumption by bacteria, which produces gas as a byproduct. Common intolerances associated with frequent burping include lactose intolerance, gluten intolerance, fructose malabsorption, and sorbitol malabsorption.

Insufficiency of the pancreas

The pancreas is an important organ for the production of digestive enzymes needed for the chemical breakdown of foods in the gastrointestinal tract. Due to bile duct stones, pancreatitis, or pancreatic cancer, insufficiency of the pancreas can lead to an inability to digest food adequately, leading to food intolerances and malabsorption. As a result of the bacterial consumption of the nutrients, excessive belching may occur.


Further Reading

Last Updated: Apr 21, 2022

Yolanda Smith

Written by

Yolanda Smith

Yolanda graduated with a Bachelor of Pharmacy at the University of South Australia and has experience working in both Australia and Italy. She is passionate about how medicine, diet and lifestyle affect our health and enjoys helping people understand this. In her spare time she loves to explore the world and learn about new cultures and languages.


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  1. Joan Lee Joan Lee United States says:

    My sister has excessive belching, mainly at night.  She has to sit up in bed and belch, it is really loud and long.  It smell bad also, mostly like rotten eggs.

  2. Janie Acton Janie Acton United States says:

    Mark had a endoscope to check for baretts syndrome.  He was left with excessive belching nothing controls it. No meds or high fiber diet. We are at our wits end. They stretched his throat and they found a small hiatus hernia. A ER Dr. told us his throat had probably been stretched to far. They sent referral for new gastric Dr.  We think there is no hope so why go.

  3. Jorge Jara Jorge Jara Paraguay says:

    Mi hija adolescente después de una gastroenteritis... al probar bocado o tomar algún líquido presenta ataques de 1 hora y media de eructos repetitivos en exceso ,es como una convulsión de eructos  ! es muy raro ,los doctores aca en paraguay no sabem porque es ..

  4. Nicola Soccal Nicola Soccal Spain says:

    after every meal (mostly if I lie down, but also while standing) I get a headache and start to burp a lot for minutes or even hours.

    • Georgia Namdets Georgia Namdets United States says:

      I have had the same problem for the past year. I’ve had every test you can think of, but no answers. I’ve found the following very helpful: Taking medications on an empty stomach, adding a daily probiotic, and not eating large amounts at one time. The combination of all of these has made what was a constant problem, lasting hours sometimes, much improved.

      I hope you find some relief very soon.

The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of News Medical.
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