Farting, in most people’s minds, is embarrassing. To fart publicly or in the presence of others makes one feel ashamed and embarrassed. Yet did you know that farting is a part of good health? In fact, the gas you pass can reveal a lot about your digestive system and gut. While everyone attempts to conceal their farts, knowing what triggers them, particularly the stinky ones, may be a way to discover more about your digestive wellness. Are stinky farts a sign of good digestion or of something amiss?
Why Do We Fart?
Dr Dattatray Solanke, Consultant, Gastroenterologist, Kokilaben Dhirubhai Ambani Hospital, Mumbai, explains, “Passing gas is a normal part of digestion. In fact, the average person farts 10 to 20 times a day.” This happens because your body breaks down food in your stomach and intestines. Some gas is swallowed air, but much of it is made by gut bacteria as they digest food that your body can’t break down on its own.
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What Causes Smelly Farts?
Not all farts smell bad. Dr. Solanke says, “Smelly farts typically occur due to the breakdown of sulphur-containing foods like eggs, cruciferous vegetables (broccoli, cabbage), meat, or garlic.” As your gut bacteria break down these foods, they release sulphur gases, which have a strong, unpleasant odour. This is actually a sign that your gut microbes are active and doing their job. In small amounts, smelly gas is normal and shows your microbiome is healthy.
When Should You Worry About Smelly Gas?
While occasional smelly farts are perfectly normal, there are times when they can signal a problem. Dr. Solanke explains, “Consistently foul-smelling gas, especially when paired with bloating, abdominal pain, or changes in bowel habits, could indicate underlying issues.” Some possible causes include:
- Lactose intolerance: Trouble digesting dairy products.
- Irritable bowel syndrome (IBS): A common gut disorder causing pain, bloating, and changes in stool.
- Malabsorption: Your body is not absorbing nutrients properly.
- Dysbiosis: An imbalance in gut bacteria.
- Food sensitivities: Reactions to foods like gluten or artificial sweeteners.
- If you notice these symptoms, it’s a good idea to talk to a doctor or dietitian.
What About Odourless Gas?
Not all gas smells. Dr. Solanke says, “Odourless gas is mostly made up of oxygen, nitrogen, and carbon dioxide. This often comes from swallowing air while eating or drinking too quickly.” This type of gas is not directly related to digestion and is usually harmless.
What Does Science Say?
A study in the journal Gut has discovered that gas smell is caused primarily by sulphur compounds formed by gut bacteria. The research indicated that healthy individuals might produce some pungent gas, but extremely pungent or persistent odours could be an indication of problems with the gut.
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Conclusion
Passing gas is normal and healthy. Stinky gas is simply a sign that your gut bacteria are doing a good job of breaking down food. However, if your gas is usually extremely smelly, or you have pain, bloating, or changes in your bowel movements, you need to go see a doctor. Your gas can say a great deal about your digestive health—so tune in to what your body is signalling!