An average adult produces about half a liter of flatulent gas per day, resulting in an average of about fourteen occurrences of flatulence a day.
The Average Person Farts 14 Times a Day
Let's address the elephant in the room—or rather, the gas in your intestines. Every single day, your body produces about half a liter of flatulent gas, which escapes in an average of 14 distinct toots. Before you feel self-conscious, remember: this is completely normal human biology, and yes, everyone does it.
The science behind your daily gas production is surprisingly complex. Your intestines generate between 500 to 2,000 milliliters of gas every 24 hours through a combination of swallowed air and bacterial fermentation in your colon. That gas is composed of five main components: nitrogen, oxygen, carbon dioxide, hydrogen, and methane. The specific ratio depends on what you eat and the unique ecosystem of bacteria living in your gut.
Why We're All Walking Gas Factories
When you eat, you don't just swallow food—you also gulp down air. But the real gas production happens deeper in your digestive system. Your small intestine can't digest certain carbohydrates, so they travel to your colon where trillions of bacteria break them down. This bacterial feast produces gas as a byproduct, much like how yeast produces carbon dioxide when making bread rise.
Foods particularly notorious for gas production include:
- Beans and lentils (high in complex sugars called oligosaccharides)
- Cruciferous vegetables like broccoli, cabbage, and Brussels sprouts
- Dairy products for those with lactose intolerance
- Whole grains and fiber-rich foods
- Carbonated beverages (you're literally drinking gas)
The 14-Times-a-Day Average
Research from Harvard Health and multiple gastroenterology studies confirms that 14 flatulent episodes per day sits right in the middle of normal. However, "normal" actually ranges from about 10 to 25 times daily. Some people might experience up to 40 times a day and still be perfectly healthy—it all depends on diet, gut bacteria composition, and how much air you swallow.
Interestingly, you don't consciously notice every single fart. Many occur while you're sleeping or are so subtle they escape your awareness. The ones you notice tend to be either audible or malodorous (or both, if you've recently enjoyed a bean burrito).
When Gas Becomes a Problem
While flatulence is normal, excessive gas accompanied by pain, bloating, or changes in bowel habits might signal an underlying issue. Conditions like irritable bowel syndrome (IBS), small intestinal bacterial overgrowth (SIBO), or food intolerances can amp up gas production beyond comfortable levels.
The odor factor deserves mention too. Most of your daily gas is actually odorless—it's just air and carbon dioxide. The notorious stink comes from sulfur-containing compounds produced when bacteria break down proteins. These make up less than 1% of flatus volume but 100% of its social consequences. Foods high in sulfur, like eggs, meat, and certain vegetables, are the usual culprits behind particularly offensive emissions.
So the next time you feel a rumble down under, take comfort in knowing you're just a normal human performing a normal biological function. Your 14 daily farts are simply proof that your digestive system is working exactly as evolution designed it.