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Flatulence is the passing of air or gas from the intestine and through the anus. It is often accompanied by a sound and smell.

Most people pass wind between 10 and 25 times a day. But excessive flatulence can be uncomfortable and embarrassing, and can sometimes indicate a medical problem. Flatulence is commonly called farting, or breaking or passing wind, or flatus.

Causes of flatulence

When you break down and digest food in your intestines, some gases are created - that is normal.

However, the amount of wind you create is influenced by what you eat and drink. Several high-fibre foods, carbonated drinks and artificial sweeteners can cause excessive flatulence. It can also be caused by:

  • fresh and dried fruits, such as apples, pears and raisins
  • nuts and seeds
  • beans and peas and some other vegetables
  • eating dairy if you have lactose intolerance
  • medical conditions like irritable bowel syndrome
  • medications such as cholestyramine and orlistat
  • swallowing air if you are anxious, or if you eat quickly, smoke or chew gum.

Symptoms that accompany flatulence

There are usually no symptoms when flatulence is at a normal level. You might not even notice when you pass wind for much of the time. But if you have excessive flatulence, you might:

  • break wind more often
  • have pain, bloating or rumbling in the abdomen
  • notice that your farts are loud and smelly.

Ways to reduce flatulence

There is no simple dietary solution to excessive flatulence since foods affect people’s digestion differently. A useful approach is to work out which foods seem to cause the problem in your case and either to avoid them altogether or to cut back how much you consume. But be aware that high-fibre foods form part of a healthy diet.

You can also decrease flatulence by avoiding chewing gum, fizzy drinks, foods with artificial sweeteners and smoking. Relaxing when you eat and eating slowly can also help.

You could discuss with your doctor or pharmacist whether to take over-the-counter antacids or activated charcoal tablets. This may benefit some people.

When to seek medical advice

You should see your doctor if you have severe flatulence, especially if you also have other digestive problems, such as constipation, diarrhoea, vomiting, abdominal pain, bloating, weight loss or blood in the stool.

Learn more here about the development and quality assurance of healthdirect content.

Last reviewed: July 2017

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