What Can Help with Bloating and Gas? Here’s What to Know

Bloating and gas are among the most common digestive complaints in the United States. The good news is that most cases come from ordinary, identifiable causes — swallowed air, undigested carbohydrates, constipation, or eating habits — and many respond to simple changes. The less good news is that “bloating” means different things to different people, and the right approach depends on which one you mean.

What Actually Causes Bloating and Gas?

Gas in the digestive tract comes from two main sources: air you swallow and gas produced by bacteria in your colon.

Swallowed air — called aerophagia — enters when you eat quickly, drink through a straw, chew gum, suck on hard candy, smoke, or wear loose dentures. Most swallowed air comes back up as a burp. Some travels down and exits the other end.

The second source is fermentation. Your small intestine cannot fully digest certain carbohydrates. When those reach the colon, bacteria ferment them and produce hydrogen, methane, and carbon dioxide. This is normal. Everyone does it. The average adult passes gas roughly 14 times a day, according to the National Institute of Diabetes and Digestive and Kidney Diseases.

Bloating is a different sensation from gas. Bloating is the feeling of abdominal fullness, pressure, or tightness. Visible distension — when the belly actually looks bigger — is related but not identical. Some people feel severely bloated with no measurable increase in abdominal size. Others show visible distension with minimal discomfort. This distinction matters because it points to different underlying mechanisms.

One clarification worth making: bloating is not always caused by excess gas. Research using imaging and gas measurement has found that many people who feel bloated have normal amounts of intestinal gas. Their symptoms appear to come from how the gut senses and moves contents, not from how much gas is present. That is a meaningful difference, because treatments aimed purely at reducing gas may not help.

Which Foods and Habits Make It Worse?

Certain foods are well-established gas producers because they contain carbohydrates humans cannot fully digest.

• Beans and legumes — contain oligosaccharides, which gut bacteria ferment readily
• Broccoli, cabbage, cauliflower, and Brussels sprouts — contain raffinose and other fermentable fibers
• Onions and garlic — contain fructans, a type of fermentable carbohydrate
• Wheat and rye — contain fructans as well
• Dairy — problematic only for people with lactose intolerance, which is common but not universal
• Sugar alcohols — sorbitol, mannitol, xylitol, and erythritol are poorly absorbed and often cause gas and loose stools
• Carbonated drinks — add gas directly

Not everyone reacts to the same foods. Tolerance varies widely between people. A food that causes severe gas in one person may cause none in another.

Eating habits matter too. Eating fast, talking while eating, and drinking large amounts of liquid with meals all increase swallowed air. Constipation is another major contributor — when stool sits in the colon, gas has more time to accumulate and pressure builds. Treating constipation often improves bloating more than dietary changes alone.

What Can Help with Bloating and Gas?

The most effective approaches address the specific cause. There is no single fix that works for everyone, and evidence for some popular remedies is weaker than marketing suggests.

Dietary changes

Keeping a food and symptom diary for a few weeks can reveal patterns. This is more reliable than guessing. A low-FODMAP diet — which temporarily restricts fermentable carbohydrates — has the strongest evidence base for irritable bowel syndrome (IBS) related bloating. It is best done with a registered dietitian because it is restrictive and not meant to be permanent. After a trial period, foods are reintroduced one at a time to identify triggers.

For people without IBS, simply reducing known gas-producing foods, eating more slowly, and treating constipation may be enough.

Over-the-counter options

Simethicone is widely sold for gas. It works by joining small gas bubbles into larger ones, which may be easier to pass. Evidence for simethicone is mixed — some studies show benefit, others do not.

Alpha-galactosidase, an enzyme sold under brand names like Beano, helps break down oligosaccharides in beans and some vegetables. It is taken with the first bite of a meal. It works for some people and not others.

Lactase supplements help people with lactose intolerance digest dairy. This is well established.

Activated charcoal is marketed for gas and bloating. The evidence for this use is weak. It is not a proven treatment for intestinal gas.

Other approaches

Peppermint oil capsules have some evidence for reducing IBS-related bloating and abdominal pain. Enteric-coated versions are designed to release in the intestine rather than the stomach, which may reduce heartburn side effects.

Probiotics are frequently recommended, but the evidence is inconsistent. Different strains, doses, and durations have been studied, and results vary. No single probiotic is established as a reliable treatment for bloating in the general population.

Regular physical activity helps move gas through the digestive tract. Walking after meals is a simple, low-risk habit that some people find helpful.

When Is Bloating a Sign of Something More Serious?

Most bloating is benign. But certain patterns warrant medical evaluation.

Seek medical attention if bloating is new and persistent, especially after age 50. Also see a doctor if you have unintentional weight loss, blood in the stool, fever, vomiting, severe pain, or bloating that does not come and go.

Persistent bloating can be a symptom of several conditions, including IBS, celiac disease, small intestinal bacterial overgrowth (SIBO), lactose intolerance, and gynecologic conditions. In some cases, ongoing bloating — particularly with pelvic symptoms — can be a sign of ovarian cancer. This is uncommon, but it is why persistent, unexplained bloating should not be ignored.

Ascites — fluid accumulation in the abdomen — can also cause distension. This is usually related to liver, heart, or kidney disease and is a medical issue, not a digestive gas problem.

The key distinction is whether bloating is occasional and linked to food or constipation, or persistent and unexplained. Occasional bloating is normal. Bloating that is new, worsening, or accompanied by other symptoms needs a doctor’s assessment.

Does Exercise or Movement Help?

Physical movement helps gas pass through the digestive tract. This is well established. The intestines move contents forward through peristalsis, and activity supports that process.

Walking after meals is a common recommendation. It is low risk and some people find it reduces discomfort. The evidence for specific timing or duration is not strong, but the general principle — that movement aids digestion — is sound.

Yoga poses that involve twisting or gentle abdominal compression are sometimes recommended for gas. There is limited clinical evidence for specific poses, but gentle movement is unlikely to cause harm for most people.

Lying on your left side may help some people pass gas more easily. This is based on the anatomy of the colon, though formal studies are limited.

What About Constipation and Bloating Together?

Constipation and bloating often go hand in hand. When stool moves slowly, gas and contents back up. The result is pressure, fullness, and sometimes visible distension.

Addressing constipation often improves bloating more than any gas-specific remedy. This means getting enough fiber — but slowly, because sudden fiber increases can worsen gas temporarily. It also means staying hydrated and being physically active.

If constipation is chronic, a doctor can evaluate for causes and discuss options. Some people need more than dietary changes.

One practical point: increasing fiber too quickly is a common mistake. It can make gas and bloating worse before it gets better. Adding fiber gradually over weeks gives the gut time to adjust.