Passing gas is normal, but if you’re doing it more than you’d like, a few targeted changes to how you eat, what you eat, and how you move can make a real difference. The average healthy adult passes gas about 15 times a day, though anywhere from a handful to 40 times falls within the normal range. Your intestines produce between 500 and 2,000 milliliters of gas daily, so the goal isn’t to eliminate gas entirely. It’s to bring it down to a comfortable level.
Where the Gas Actually Comes From
Gas enters your digestive tract through two main routes: swallowed air and bacterial fermentation. Every time you eat or drink, you swallow small amounts of air. Some of that air gets belched back up, but whatever doesn’t leave your stomach travels through your intestines and eventually passes as flatulence.
The bigger source for most people is bacterial fermentation. Your large intestine is home to trillions of bacteria that help break down food, and when they encounter carbohydrates your small intestine didn’t fully absorb, they ferment them and produce gas as a byproduct. The more undigested carbohydrates reaching your colon, the more gas you produce. This is why certain foods are so reliably gas-inducing.
Foods That Cause the Most Gas
The worst offenders are foods high in fermentable carbohydrates, sometimes grouped under the acronym FODMAPs (fermentable short-chain carbohydrates that the small intestine absorbs poorly). These include:
- Beans and lentils, which contain sugars your body lacks the enzymes to break down in the small intestine
- Dairy products like milk, yogurt, and ice cream, particularly if you’re lactose intolerant
- Wheat-based foods such as bread, cereal, and crackers
- Certain vegetables, especially onions, garlic, artichokes, and asparagus
- Certain fruits, including apples, pears, cherries, and peaches
- Carbonated drinks, which introduce gas directly into your stomach
You don’t necessarily need to cut all of these out permanently. A better approach is to eliminate the likely culprits for two to three weeks, then reintroduce them one at a time to identify which specific foods are problems for you. Many people find they tolerate some of these foods fine but react strongly to one or two categories.
Change How You Eat, Not Just What
Swallowed air accounts for a surprising amount of gas, and most of it comes down to habits you can fix quickly. Eating too fast is the most common cause. When you rush through a meal, you gulp air with every bite. Chew slowly, and make sure you’ve fully swallowed one bite before taking the next.
Other air-swallowing triggers worth addressing: drinking through straws, chewing gum, sucking on hard candy, talking while eating, and smoking. Each of these forces extra air into your digestive tract. Switching from a straw to sipping from a glass and ditching the gum habit can reduce belching and flatulence noticeably within a few days.
Over-the-Counter Options That Help
If dietary changes alone aren’t enough, a few supplements target specific causes of gas. The right one depends on what’s triggering yours.
If beans and high-fiber vegetables are your problem, an enzyme supplement containing alpha-galactosidase (sold as Beano and similar products) can help. This enzyme breaks down the complex sugars in beans and cruciferous vegetables before they reach your colon. A randomized controlled trial found significant reductions in bloating and flatulence scores compared to placebo, with no reported side effects.
If dairy causes your gas, a lactase supplement taken just before eating dairy can prevent symptoms. Commercial lactase products typically provide around 9,000 IU per serving, which is within the effective range shown in studies. For people whose gas is tied to fructose (the sugar in many fruits and honey), a newer enzyme called xylose isomerase has shown promise, significantly reducing symptoms like abdominal pain and gas production in people with fructose malabsorption.
Simethicone (the active ingredient in Gas-X) works differently. It doesn’t prevent gas production. Instead, it breaks up gas bubbles already in your digestive tract, which can ease the bloated, pressurized feeling. It’s useful for immediate relief but won’t reduce how much gas your body makes.
Probiotics for Long-Term Improvement
Because gas production depends heavily on which bacteria live in your gut, probiotics can shift the balance toward less gas-producing species. Multiple randomized controlled trials have shown significant short- and long-term reductions in flatulence and bloating with probiotic use. One study found that a multi-strain probiotic containing Bifidobacterium and Lactobacillus species produced a 50 percent reduction in flatulence in more patients at four weeks compared to placebo.
The catch is that not all probiotics are interchangeable. Each product contains different bacterial strains, and results vary between formulations. If you try one brand for four to six weeks without improvement, switching to a different formulation with different strains is reasonable. Most studies showing benefit used products that combined multiple Bifidobacterium and Lactobacillus species rather than single-strain supplements.
Physical Positions That Move Trapped Gas
When gas feels stuck and uncomfortable, specific body positions can help it pass. The most effective is the wind-relieving pose, used in yoga specifically for this purpose. Lie flat on your back, bring one knee up toward your chest, and wrap both hands around that knee. Lift your head gently toward your knee, hold for a few breaths, then release and repeat on the other side. You can also bring both knees up at once and rock gently side to side. Keep your lower back on the ground and the resting leg as straight as possible.
Walking after meals also helps. Even a 10 to 15 minute walk stimulates the muscles of your digestive tract and keeps gas moving through rather than building up. Lying on your left side can encourage gas to move toward the exit as well, since your colon’s natural curvature favors that position.
When Gas Signals Something Deeper
Excessive gas that doesn’t respond to dietary changes could point to an underlying digestive condition. Irritable bowel syndrome (IBS) and small intestinal bacterial overgrowth (SIBO) are two of the most common. IBS tends to involve more abdominal pain alongside the gas, while SIBO is typically more bloating-predominant. Both are diagnosable and treatable, but they require different approaches.
Certain symptoms alongside gas warrant a visit to your doctor: blood in your stool, unexplained weight loss, persistent changes in bowel habits (new constipation or diarrhea), and ongoing nausea or vomiting. Prolonged abdominal pain or chest pain alongside gas needs immediate attention, since chest pain in particular can mimic other serious conditions.