Flatulence is passing gas from the digestive system out of the back passage. It's more commonly known as "passing wind", or "farting".

Farting is often laughed about, but excessive flatulence can be embarrassing and make you feel uncomfortable around others. However, it can usually be controlled withchanges to your diet and lifestyle.

Flatulence isa normal biological process and is something everyone experiences regularly. Some people pass wind only a few times a day, others a lot more, but the average is said to be about5 to 15 times a day.

Whyit happens

When you swallow food, water or saliva, you also swallow small amounts of air, which collects in the digestive system. Gases can also build up when you digest food. The body needs to get rid of the build-up byfarting (flatulence) orburping (belching).

Sometimes you may not notice you have passed wind because most of the gases are odourless and often released in small quantities. Flatulence usually only has a bad smell if it contains gases that smell, such as sulphur. However, it's important to remember it's normal for the gas you pass to sometimes smell a bit.

Excessiveflatulence can be caused by swallowing more air than usual oreating food that's difficult to digest. It can also berelated toan underlying health problem affecting the digestive system, such as recurring Indigestion or irritable bowel syndrome (IBS) .

You're probably the best person to assess your own symptoms.

See your GP if your flatulence is particularly troublesomefor example, if you're frequently passing smelly gas.

You should also visit your GP if you experience additional symptoms, such as:

  • persistent abdominal pain and bloating
  • recurring episodes of diarrhoea or constipation
  • unexplained weight loss
  • bowel incontinence
  • blood in your stools (faeces)
  • signs of an infection,such as a high temperature, vomiting, chills,joint pain and muscle pain

These symptoms could be an indicator of a more serious health problem and mayrequire investigation, such as a blood or stool test to look for an infection.

Controlling the problem

Excessiveflatulence can usually be controlled by making changes to your diet and lifestyle, such as:

  • avoiding foods known to cause flatulence
  • eating smaller and more frequent meals
  • eating and drinking slowly
  • exercising regularly

There are also some over-the-counter medications that can help if your flatulence is troublesome, such as charcoal tablets or simethicone.

If your flatulence is related to an underlying health problem, treating the condition may helpresolve it.


Content supplied by the NHS Website

Medically Reviewed by a doctor on 4 Jan 2017