Most people pass gas 13 to 21 times a day, so some gas is completely normal. But when it becomes excessive, painful, or disruptive, there are concrete steps you can take to reduce it. The solution depends on where your gas is coming from: air you swallow, or food that ferments in your colon.
Why You Have Gas in the First Place
Gas enters your digestive system through two routes. The first is swallowed air. Every time you eat, drink, or swallow saliva, small amounts of air travel into your stomach. Most of it comes back up as a belch, but some moves into the intestines.
The second, and usually bigger, source is bacterial fermentation. When certain carbohydrates aren’t fully absorbed in your small intestine, they travel to your colon, where bacteria break them down and produce hydrogen, methane, and carbon dioxide. This is the gas that causes bloating, cramping, and flatulence. The more undigested material that reaches your colon, the more gas your bacteria produce.
Foods That Cause the Most Gas
The biggest gas producers are foods high in soluble, fermentable fiber. Beans, legumes, nuts, seeds, wheat, and soy products are all rich in oligosaccharides, a type of short-chain carbohydrate your small intestine absorbs poorly. Legumes are particularly potent because they also contain resistant starch, pectin, guar gum, and inulin, all of which ferment readily in the colon.
Fruits, dairy, and certain sweeteners can also be culprits. Lactose in milk, fructose in some fruits, and sugar alcohols (like sorbitol and mannitol found in sugar-free gum and candy) all follow the same pattern: poor absorption in the small intestine, followed by fermentation in the colon. These fall under the category of FODMAPs, a group of fermentable sugars that are well-documented gas triggers.
Insoluble fiber from cereals and whole grains, by contrast, produces relatively little gas. If you’re increasing your fiber intake, start with these sources and add beans and legumes gradually over a few weeks. Your gut bacteria adapt over time, and a slow transition produces noticeably less discomfort than a sudden dietary overhaul.
Habits That Make You Swallow Air
Swallowed air is the easier of the two gas sources to fix, because it’s entirely behavioral. You swallow excess air when you eat or drink too fast, talk while eating, chew gum, suck on hard candies, drink carbonated beverages, or smoke. Each of these forces you to swallow more frequently, and part of what you swallow is air.
The simplest changes: slow down at meals, put your fork down between bites, and skip the gum. If you drink a lot of sparkling water or soda, switching to still water can make a noticeable difference within days. These adjustments primarily reduce belching and upper abdominal bloating rather than lower intestinal gas.
Physical Positions That Release Trapped Gas
When gas is already trapped and causing discomfort, certain body positions help move it through your intestines. These work by gently compressing your abdomen or creating space for gas to shift.
- Wind-relieving pose: Lie on your back, bring both knees into your chest, and wrap your arms around your legs. Clasp your hands and gently pull your thighs toward your abdomen. Tuck your chin toward your chest. Hold for 20 to 30 seconds.
- Child’s pose: From a kneeling position, sit back on your heels, then fold forward so your torso rests on your thighs and your forehead touches the floor. Let your arms extend in front of you or rest alongside your body.
- Spinal twist: Lie on your back with knees bent into your chest, then let both knees drop to one side while keeping your shoulders flat. Turn your gaze in the opposite direction. Hold, then switch sides.
- Happy baby pose: Lie on your back, bend your knees along the sides of your body with the soles of your feet facing the ceiling. Grab the outsides of your feet and gently pull your knees toward the floor.
A short walk also helps. Even 10 to 15 minutes of light movement stimulates the muscles of your digestive tract and encourages gas to pass rather than pool in one spot.
Over-the-Counter Options
Two products dominate the gas relief aisle, and they work in completely different ways.
Simethicone (sold as Gas-X and similar brands) is an anti-foaming agent that combines small gas bubbles into larger ones, making them easier to pass. It’s safe and widely used, but the clinical evidence for its effectiveness is actually weak. Many people report modest relief, but studies haven’t consistently shown it outperforms a placebo.
Alpha-galactosidase (sold as Beano) takes a different approach. It’s an enzyme that breaks down the specific oligosaccharides in beans, vegetables, and grains before they reach your colon. By digesting these carbohydrates in your small intestine, it removes the fuel that bacteria would otherwise ferment into gas. The key is timing: you need to take it with your first bite of a gas-producing meal, not after symptoms start.
Probiotics and Peppermint Oil
Certain probiotic strains can shift the balance of bacteria in your gut toward species that produce less gas. A large systematic review comparing multiple strains found that several were significantly better than placebo at reducing bloating scores. The strains with the strongest evidence include Lactobacillus plantarum 299v, Bifidobacterium bifidum MIMBb75, and the multi-strain formula VSL#3. Bifidobacterium infantis 35624 also showed meaningful improvements in both bloating and abdominal pain. Results typically take two to four weeks to appear, so consistency matters more than brand.
Enteric-coated peppermint oil capsules are another option with a reasonable track record, particularly for people whose gas comes with cramping or discomfort. The enteric coating prevents the capsule from dissolving in the stomach (which can cause heartburn) and instead releases the oil in the intestines, where it relaxes the smooth muscle of the gut wall. A typical regimen is one capsule three to four times daily, taken 15 to 30 minutes before meals.
Finding a Hidden Cause
If dietary changes and the strategies above don’t help, the problem may be a specific carbohydrate malabsorption. Lactose intolerance is the most common example. A hydrogen breath test can diagnose it: you drink a lactose solution, and elevated hydrogen levels in your breath over the next few hours confirm that the sugar is fermenting instead of being absorbed. When the test includes enough breath samples over a three-hour window, it catches malabsorption in roughly 96% of cases. The same type of test can check for fructose malabsorption.
Persistent gas can also be a symptom of irritable bowel syndrome, celiac disease, or small intestinal bacterial overgrowth. Pay attention to patterns. Gas that arrives with a sudden change in bowel habits, unexplained weight loss, or significant abdominal pain points toward something beyond normal digestion and is worth investigating with your doctor.