Most bloating comes down to excess gas, excess water, or both trapped in your digestive tract. The good news is that the most common triggers are behavioral and dietary, meaning a few targeted changes can make a noticeable difference. Here’s what actually works.
Slow Down When You Eat
Every time you swallow, a small amount of air goes down with your food. That’s normal. But eating quickly, drinking through straws, and sipping carbonated beverages all increase the volume of air you swallow, a condition sometimes called aerophagia. That extra air has to go somewhere, and if it doesn’t come back up as a burp, it moves into your intestines and stretches them out.
The fix is straightforward: chew each bite thoroughly and swallow it before loading up the next one. Drink from a glass instead of a straw. If sparkling water or soda is a daily habit, try switching to still water for a week and see if your bloating improves. These small changes reduce the raw volume of gas entering your system before digestion even starts.
Watch Your Salt Intake
Sodium plays a surprisingly direct role in bloating. A study from Johns Hopkins found that high-sodium diets increased the risk of gastrointestinal bloating by about 27 percent compared to low-sodium versions of the same diet. Salt causes water retention throughout the body, including in the tissues of the gut wall, and researchers suspect it may also alter gut bacteria in ways that increase gas production.
Processed foods, restaurant meals, canned soups, and deli meats are the biggest sodium sources for most people. Reading labels and cooking more meals at home gives you control over how much salt you’re actually consuming. You don’t need to go sodium-free. Just cutting back from a high intake to a moderate one can reduce that water-logged, puffy feeling in your abdomen.
Learn Which Foods Ferment in Your Gut
Certain short-chain carbohydrates, collectively called FODMAPs, are poorly absorbed in the small intestine. When they reach the large intestine, gut bacteria use them as fuel and rapidly ferment them, producing gas. At the same time, these carbohydrates draw extra water into the intestines. The combination of gas and fluid stretches the intestinal wall, causing that tight, distended feeling.
The main categories of these fermentable carbohydrates and their common food sources:
- Fructans and GOS: wheat, rye, onions, garlic, legumes
- Lactose: milk, soft cheeses, yogurt
- Excess fructose: honey, apples, high-fructose corn syrup
- Sugar alcohols (sorbitol, mannitol): some fruits and vegetables, plus “sugar-free” products
You don’t necessarily need to avoid all of these permanently. Many people are sensitive to only one or two categories. Keeping a simple food diary for two weeks, noting what you ate and when bloating hit, can help you identify your personal triggers. A structured low-FODMAP elimination diet, developed by Monash University, is the gold-standard approach if you want to be systematic about it.
Be Careful With Sugar Alcohols
Sugar alcohols deserve their own mention because they’re increasingly common in protein bars, sugar-free gum, diet drinks, and “keto-friendly” snacks. Your body can’t fully digest them, so they ferment in the large intestine just like other FODMAPs. Research suggests that 10 to 15 grams per day is generally tolerable for most people, but many packaged products contain close to that amount in a single serving. Symptoms tend to hit quickly after eating them. If you’re regularly reaching for sugar-free products and dealing with bloating, check the ingredient list for sorbitol, mannitol, xylitol, or erythritol.
Increase Fiber Gradually
Fiber is essential for healthy digestion, but adding too much too fast is one of the most common causes of sudden bloating. The recommended daily intake 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 Americans fall well short of these targets.
If you’re currently eating a low-fiber diet and decide to load up on beans, whole grains, and raw vegetables overnight, your gut bacteria will have a field day fermenting all that new material. The Mayo Clinic recommends increasing fiber intake slowly over a few weeks, giving your digestive system time to adapt. Drinking more water alongside the extra fiber also helps it move through your system more smoothly rather than sitting and fermenting.
Take a Walk After Meals
Light movement after eating helps your gastrointestinal tract push food and gas through more efficiently. A short walk within an hour of a meal, sometimes informally called a “fart walk,” stimulates the natural muscle contractions in your intestines that move things along. Even five minutes of light activity can make a difference. You don’t need a workout. A casual stroll around the block is enough to reduce that heavy, stagnant feeling after a big meal and help trapped gas find the exit.
Supplements That May Help
A few over-the-counter options have some evidence behind them for bloating relief.
Digestive enzyme supplements containing alpha-galactosidase (the active ingredient in products like Beano) break down complex carbohydrates in foods like beans, lentils, broccoli, and cauliflower into simpler sugars your body can absorb before bacteria get the chance to ferment them. Taking one before a meal with known trigger foods can reduce gas production.
Enteric-coated peppermint oil capsules relax the smooth muscle in the lower digestive tract, which can ease the cramping and distension that comes with trapped gas. The coating is important because it allows the oil to reach the intestines rather than dissolving in the stomach, where it can cause heartburn. Clinical trials for digestive symptoms have typically used capsules taken three times daily.
Probiotics are a more mixed picture. A specific strain called Bifidobacterium infantis 35624 has been studied for bloating, and while one trial found that people taking it had significantly more bloating-free days than a placebo group, overall severity scores at the end of four weeks were similar between both groups. Probiotics aren’t a quick fix, and results vary widely depending on the strain and the individual.
When Bloating Signals Something Bigger
Occasional bloating after a large meal or a high-fiber day is normal. But bloating that gets progressively worse over time, persists for more than a week, or comes with pain that doesn’t go away warrants medical attention. The same goes for bloating accompanied by fever, vomiting, blood in your stool, unintentional weight loss, or signs of anemia. These can signal conditions ranging from food intolerances and small intestinal bacterial overgrowth to more serious issues that need diagnosis.