Anti-Bloating Diet: Trigger Foods, Sodium, Fiber and Fluids

An anti-bloating diet works by finding and limiting the things that put extra gas in your digestive tract: swallowed air, and carbohydrates your small intestine does not fully digest, such as those in beans, some fruits and vegetables, dairy, and sugar-free sweets. Randomized feeding trials also show that eating less sodium lowers the chance of bloating, and that raising fiber quickly can increase it, so fiber is best added gradually with enough fluid.

Key Takeaways

Gas comes from two main sources: air you swallow, and gut bacteria breaking down carbohydrates that your stomach and small intestine did not digest.
Common trigger foods include beans and lentils, broccoli and cauliflower, apples and pears, milk and ice cream, whole wheat, drinks sweetened with high-fructose corn syrup, and sweeteners ending in "-ol" such as sorbitol.
In a randomized trial of 412 adults, a higher-sodium diet raised the risk of bloating by about 27%, whatever else people ate.
High-fiber diets increased bloating in two large feeding trials, yet fiber remains worth eating: add it slowly and drink enough fluid.
Eating slowly, choosing smaller meals, and cutting back on fizzy drinks, gum and straws reduces swallowed air.
See a doctor if bloating is frequent, changes suddenly, or comes with pain, diarrhea, constipation or weight loss.

Evidence grade: Moderate. Large randomized feeding trials measured how sodium and fiber affect bloating, and a small crossover trial measured gas production from fermentable carbohydrates; few controlled studies test individual "anti-bloating" foods or teas.

What Causes Bloating?

Bloating is a feeling of fullness or swelling in the abdomen. When the belly actually becomes larger than usual, doctors call it distention, and only about half of people with bloating also have visible distention. Some gas is normal: people pass gas an average of 8 to 14 times a day, and experts consider up to 25 times a day normal.

According to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), gas enters the digestive tract in two ways:

Swallowed air. You swallow more air when you eat or drink quickly, chew gum, suck on hard candy, drink carbonated drinks, smoke, or wear loose-fitting dentures.
Fermentation in the large intestine. Some sugars, starches and fibers are not fully digested in the stomach and small intestine. When they reach the large intestine, bacteria break them down and produce gas.

That second source explains why the same meal can bloat one person and not another. The amount of poorly digested carbohydrate in the meal, and how your body handles it, both matter.

Foods That Commonly Cause Bloating

NIDDK lists these foods and drinks as common sources of gas-producing carbohydrates. You do not need to avoid all of them. Most people react to only a few, and many of these foods are otherwise very nutritious.

Food group	Examples	Why it can cause gas
Legumes	Beans, peas, lentils	Contain carbohydrates and fiber that reach the large intestine undigested
Cruciferous vegetables	Broccoli, cauliflower, collard greens, kale	Fermentable carbohydrates and fiber
Certain fruits and juices	Apples, peaches, pears, fruit juice	Fructose and other poorly absorbed sugars
Dairy	Milk, ice cream, yogurt	Lactose, which some people do not digest well
Whole grains	Whole wheat	Fermentable carbohydrates and fiber
Sweetened drinks	Soft drinks, sports drinks, energy drinks with high-fructose corn syrup	Large doses of fructose
Sugar-free products	Candy and gum with sorbitol, mannitol, xylitol, erythritol or maltitol	Sugar alcohols are only partly absorbed
Carbonated drinks	Soda, sparkling water, beer	Add gas directly and increase swallowed air
High-fat meals	Fried foods, rich sauces	NIDDK notes high-fat foods can increase bloating

What the Research Says About FODMAPs

FODMAP stands for fermentable oligosaccharides, disaccharides, monosaccharides and polyols. These are short-chain carbohydrates that are hard to digest, including lactose, excess fructose, the fructans in wheat and onions, the carbohydrates in legumes, and sugar alcohols.

A 2010 crossover trial tested what happens when the FODMAP content of a diet changes and nothing else does. Fifteen healthy adults, along with 15 adults with a diagnosed bowel condition, ate provided diets containing either 9 g or 50 g of FODMAPs a day for two days each. In the healthy volunteers, the high-FODMAP diet produced about four times as much hydrogen in the breath over the day, a marker of fermentation in the gut, and the only symptom they reported was more gas. The group with the bowel condition had more hydrogen on both diets and more symptoms on the high-FODMAP diet.

The practical lesson for most people is modest: if a particular food reliably leaves you bloated, a smaller portion or a lower-FODMAP swap at that meal may help. Strict, long-term low-FODMAP eating is a clinical tool that doctors use for specific diagnosed conditions, usually for a few weeks and with a registered dietitian, because it removes many healthy foods.

Sodium and Bloating

Salt is one of the better-studied bloating triggers. The DASH-Sodium trial randomly assigned 412 healthy adults to either a high-fiber DASH diet or a lower-fiber typical American diet. On their assigned diet, each person ate three sodium levels for 30 days each, in random order.

At the start, 36.7% of participants reported bloating. Regardless of diet, the highest sodium level raised the risk of bloating by about 27% compared with the lowest. The authors concluded that cutting dietary sodium may partly offset the extra bloating some people get from a high-fiber diet.

Checking the sodium on nutrition labels, and choosing fresh foods more often than salty packaged ones, are practical ways to act on this finding.

Fiber: Helpful, but Add It Gradually

Fiber supports regular bowel movements and overall digestive health, but more fiber means more material for gut bacteria to ferment. Two large randomized feeding trials measured the result:

In the DASH-Sodium trial, the high-fiber DASH diet (32 g of fiber a day) raised the risk of bloating by about 41% compared with a low-fiber diet (11 g a day). The effect was larger in men than in women.
In the OmniHeart trial, 164 adults ate three versions of a high-fiber diet (about 30 g per 2,100 calories) for six weeks each. Bloating rose from 18% at baseline to 24% on the carbohydrate-rich version, 33% on the protein-rich version and 30% on the version rich in unsaturated fat. The protein-rich version caused more bloating than the carbohydrate-rich one.

These findings are not a reason to avoid fiber. They are a reason to increase it a little at a time, drink enough fluid, and notice which fiber sources suit you. Our guides to high-fiber diets and digestive wellness and which fruit is highest in fiber can help you choose.

Fluids, Fizzy Drinks and Eating Habits

Fluid matters most when you are adding fiber. In a 1998 randomized trial, 117 adults with chronic constipation ate about 25 g of fiber a day for two months. The group told to drink 2 liters of mineral water a day had more frequent bowel movements and used fewer laxatives than the group that drank as usual, which averaged about 1.1 liters. This matters for bloating because NIDDK lists constipation among the conditions that can increase gas symptoms.

The type of drink matters too. Carbonated drinks add gas directly, and drinking through a straw or gulping increases swallowed air. NIDDK suggests these habit changes for people with gas symptoms:

Limit gum, hard candy, fizzy drinks and straws.
Avoid talking while eating, eat slowly, and sit down to eat when you can.
Eat smaller, more frequent meals instead of large ones.
If you smoke, ask your doctor about quitting, and make sure dentures fit well.

Foods and Drinks People Use for Relief

Many lists of "bloat-busting" foods go well beyond the evidence. Here is what is known about the most common suggestions:

Peppermint. Peppermint tea is a popular after-meal drink. NCCIH notes that very little research has been done on peppermint leaf. Peppermint oil capsules have been studied mainly for a specific digestive condition, and they can cause heartburn and indigestion in some people.
Ginger. Ginger has been used for indigestion and stomach discomfort in folk medicine. NCCIH's research summary focuses on nausea rather than bloating, and notes that ginger can itself cause abdominal discomfort, heartburn or diarrhea.
Lower-lactose dairy. If milk bothers you, lactose-free milk or lactase products may let you keep dairy in your diet. NIDDK lists lactase products as an option for people with lactose intolerance.
Fermented foods and probiotics. Yogurt, kefir and other fermented foods are part of many healthy diets. NIDDK recommends talking with your doctor before using probiotic products for gas symptoms. See our guide to probiotics and gut health for what has been studied.
Digestive enzymes. Some enzyme products target specific carbohydrates, such as lactase for lactose. For an overview of how they work, read why you might try digestive enzymes.

A Simple Anti-Bloating Eating Plan

Keep a food and symptom diary. NIDDK notes that a diary can help you and your doctor or dietitian spot which foods and drinks are linked to your symptoms.
Cut back on sodium first. It is the change with the clearest trial evidence, and it is good for overall health.
Test one suspected trigger at a time. Try a smaller portion, or a swap such as lactose-free milk or a different vegetable, for a week before judging it.
Raise fiber slowly. Add a few grams a week from a mix of whole grains, fruits, vegetables and legumes, and drink fluids through the day.
Change how you eat, not just what. Slow down, skip the straw and the gum, and choose smaller meals.
Keep the diet varied. Avoid cutting out whole food groups long term unless a clinician or registered dietitian recommends it.

Safety and Interactions

Diet changes are safe for most people, but bloating can occasionally be a sign of a condition that needs medical care. NIDDK advises talking with a doctor if gas symptoms bother you, if your symptoms change suddenly, or if you have other symptoms such as abdominal pain, constipation, diarrhea or weight loss along with gas. Do not rely on diet changes alone in those situations.

Restrictive diets. Long-term elimination of many foods can lower your intake of fiber and other nutrients. Work with a registered dietitian if you plan to restrict more than a few foods for more than a few weeks.
Supplements and probiotics. NIDDK recommends talking with your doctor before using supplements, probiotics or other complementary products for gas, partly because the right choice depends on what is causing your symptoms.
Peppermint oil. It can cause heartburn and indigestion. Menthol should not be applied to the face of an infant or small child.
Ginger. It can cause abdominal discomfort, heartburn and diarrhea. If you take any medicine, talk with your doctor or pharmacist before using ginger supplements.
Sugar alcohols. Sorbitol, mannitol, xylitol, erythritol and maltitol can increase gas, so check "sugar-free" labels.

Frequently Asked Questions

What is the number one food that causes bloating?

There is no single food that bloats everyone. Beans, peas and lentils are among the most common culprits because their carbohydrates reach the large intestine undigested, where bacteria ferment them. Cruciferous vegetables, dairy, apples and pears, sugar alcohols and fizzy drinks are other frequent triggers.

How can I diet without bloating?

Lower your sodium, raise fiber gradually rather than all at once, drink fluids through the day, and eat smaller meals slowly. High-fiber diets increased bloating in two large feeding trials, which is why a gradual increase makes sense. In one of them, a carbohydrate-rich high-fiber diet caused less bloating than a protein-rich one.

What should I eat to reduce stomach bloating?

Build meals around foods you tolerate well, keep portions of known triggers small, and choose fresh foods over salty packaged ones. Lactose-free dairy, a variety of fruits and vegetables, and gradual increases in whole grains suit many people. A food diary is the most reliable way to learn your own triggers.

Does drinking water help with bloating?

Water helps most when you are eating more fiber, because fluid supports regular bowel movements. In a 1998 trial, adults eating 25 g of fiber a day had more regular bowel movements when they drank 2 liters of water daily. Plain water is a better choice than carbonated drinks, which add gas.

Do digestive enzymes help with bloating?

Enzymes that target a specific carbohydrate, such as lactase for lactose, can help people who do not digest that carbohydrate well. Results for general enzyme blends vary. NIDDK recommends talking with your doctor before using supplements for gas, so you can rule out other causes.

How long do diet changes take to reduce bloating?

It varies. Habit changes that reduce swallowed air, such as skipping fizzy drinks, need no adjustment period, while diet trials measured effects after 30 days of a sodium change and six weeks of a fiber change, so give each change at least a couple of weeks. See a doctor if bloating persists or comes with other symptoms.

Sources

Disclosure: OPA Nutrition sells supplements, including products mentioned in this article. This content is for education only and is not medical advice. Statements about dietary supplements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease. Talk to your healthcare provider before using any supplement, especially if you take medication or have a medical condition.

Written and reviewed by Michael Gonzales, Founder, OPA Nutrition · Last reviewed: October 17, 2026 · How OPA researches and writes

Anti-Bloating Diet Guide: Foods That Can Cause Bloating and What Helps