Stomach bloating usually comes down to one of three things: excess gas from fermentation in the gut, fluid buildup in the intestines, or heightened sensitivity that makes normal amounts of gas feel worse than they should. The good news is that most bloating responds well to simple changes in how you eat, what you eat, and how you move. Here’s what actually works.
Why Bloating Happens in the First Place
Your large intestine is home to bacteria that ferment certain foods, producing hydrogen and other gases in the process. When that gas builds up faster than your body can move it through, you feel bloated. But gas volume alone doesn’t tell the whole story. Some people retain similar amounts of intestinal gas yet experience dramatically different levels of discomfort. Studies using gas infusion techniques have found that people prone to bloating have impaired “gas handling,” meaning their gut moves gas through more slowly and less efficiently than normal.
There’s also a muscular component that’s easy to overlook. In people who bloat frequently, the abdominal wall muscles often respond in the opposite way you’d expect. Instead of contracting to keep the belly flat when gas pressure increases, the internal oblique muscles paradoxically relax, allowing the abdomen to push outward. This is why two people with the same amount of intestinal gas can look and feel completely different.
Heightened nerve sensitivity plays a role too. Your brain interprets signals from the gut, and in some people, normal stretching of the intestinal wall gets amplified into significant discomfort. This means that reducing bloating isn’t always about producing less gas. Sometimes it’s about improving how your body handles and perceives the gas that’s already there.
Cut Down on Swallowed Air
Before you overhaul your diet, check whether you’re literally swallowing the problem. A condition called aerophagia, or excessive air swallowing, causes enough air to enter the stomach to produce noticeable bloating, gas, and abdominal pain. Common habits that contribute include eating too fast, talking while eating, chewing gum, sucking on hard candy, drinking through straws, and consuming carbonated beverages.
The fix is straightforward: chew each bite slowly and swallow it fully before taking the next one. Drink from a glass instead of a straw. If you chew gum throughout the day, try cutting back for a week and see if your bloating improves. These are small changes, but for people whose bloating is primarily air-driven, they can make a surprisingly large difference.
Try a Low-FODMAP Elimination Diet
FODMAPs are short-chain carbohydrates that your small intestine absorbs poorly. They pass into the colon where bacteria ferment them rapidly, producing gas and drawing in extra water. Common high-FODMAP foods include onions, garlic, wheat, certain fruits like apples and pears, dairy products containing lactose, and legumes like beans and lentils.
A low-FODMAP elimination diet reduces symptoms in up to 86% of people, according to research cited by Johns Hopkins Medicine. The approach works in two phases. First, you remove all high-FODMAP foods for two to six weeks. Then you reintroduce them one category at a time to identify your specific triggers. Most people don’t react to every FODMAP group, so the goal isn’t permanent restriction. It’s finding out which foods cause your bloating so you can avoid those specifically.
This diet works best with guidance from a dietitian, since it’s restrictive enough that doing it incorrectly can lead to unnecessary food avoidance or nutritional gaps.
Manage Fiber Carefully
Fiber is essential for digestive health, but adding too much too quickly is one of the most common causes of bloating. The recommended daily intake for adults is 25 grams for women 50 and younger (21 grams over 50) and 38 grams for men 50 and younger (30 grams over 50). Most people fall well short of these targets, and when they try to close the gap overnight, their gut bacteria revolt.
The key is to increase fiber gradually over a few weeks, giving the bacteria in your digestive system time to adjust. If you’re adding a fiber supplement, start with half the recommended serving. If you’re eating more beans, whole grains, or vegetables, ramp up portions slowly rather than doubling them in one meal. Drinking more water alongside added fiber also helps it move through the gut without causing a traffic jam.
Use the Right Over-the-Counter Remedy
Not all OTC bloating products work the same way, and choosing the wrong one means you’re spending money on something that won’t help.
- Alpha-galactosidase (sold as Beano): This enzyme breaks down the fermentable carbohydrates found in beans, bran, and certain fruits before your gut bacteria can ferment them into gas. Clinical trials show significant improvement in bloating and gas symptoms when taken with these specific foods. If your bloating spikes after high-fiber or bean-heavy meals, this is the better choice.
- Simethicone (sold as Gas-X): Despite its popularity, the evidence for simethicone in treating everyday bloating is weak. It works by breaking large gas bubbles into smaller ones, but studies have not shown a clear benefit for common flatulence or bloating. It does appear effective when bloating accompanies acute diarrhea, especially in combination with anti-diarrheal medication, but for garden-variety bloating it’s not well supported.
Consider Peppermint Oil or Probiotics
Enteric-coated peppermint oil capsules relax the smooth muscle of the intestinal wall, which can ease cramping and the tight, pressurized feeling that comes with bloating. The standard dose for adults is one capsule three times a day, increasing to two capsules three times a day if needed. The enteric coating matters because it prevents the peppermint oil from releasing in the stomach, where it can cause heartburn, and delivers it to the intestines where it’s most useful.
On the probiotic front, the strain Bifidobacterium longum subsp. infantis 35624 has the strongest evidence specifically for bloating. In a controlled trial, people taking one billion colony-forming units per day had significantly more bloating-free days than those on a placebo. Not all probiotics are equal for this purpose, so look for products that list this specific strain rather than grabbing a general probiotic blend off the shelf.
Move Your Body to Move the Gas
Physical activity speeds up gas transit through the intestines, reducing the buildup that causes that full, distended feeling. You don’t need an intense workout. Gentle movement, particularly poses and stretches that engage the abdomen, can provide relief relatively quickly.
A few positions that target bloating directly: pulling your knees up to your chest while lying on your back applies gentle pressure to the abdomen and helps release trapped gas. Cat-cow stretches (alternating between arching and rounding your spine on all fours) massage the internal organs and relieve tension along the spine that can slow digestion. Gentle twisting motions, like threading one arm under the other while on all fours, loosen tightness through the torso and stimulate the gut. Even intentional diaphragmatic breathing, where you expand your belly in all directions with each inhale, activates the digestive system and can ease discomfort.
A short walk after meals is also effective. It doesn’t need to be brisk. Ten to fifteen minutes of easy walking helps your stomach empty and prevents the post-meal bloat that catches many people off guard.
When Bloating Signals Something Bigger
Most bloating is uncomfortable but harmless. However, certain accompanying symptoms point to conditions that need medical evaluation. Unintentional weight loss, blood in the stool, fever, difficulty swallowing, jaundice (yellowing of the skin or eyes), or progressive pain that doesn’t improve with fasting all warrant prompt attention. The same goes for bloating that appears for the first time after age 55, or in anyone with a personal or family history of gastrointestinal or ovarian cancer. An abdominal mass you can feel, vomiting, or severe nighttime diarrhea are also red flags that shouldn’t be attributed to ordinary bloating without investigation.