Do you ever feel like your stomach is too full or swollen? You may be bloated.
Bloating is a common problem, even in people who are otherwise healthy. About 1 in 7 Americans experience bloating on a weekly basis. It’s not always easy to figure out what’s causing bloating. Continue reading to learn more about what causes bloating and what it means.
What Is Bloating?
If you’re bloated, you may feel like your stomach is too full or tight. It can happen when your gastrointestinal system (GI system or digestive system) is full of gas or liquid. Your stomach may also look swollen or distended.
When you’re bloated, you can experience many different symptoms, including:
- Abdominal (stomach) pain
- Swollen stomach
- Flatulence (farting)
- Belching (burping)
- Stomach cramps
What Does Bloating Mean? — 6 Possible Causes of Bloating
Bloating can be a symptom of many different conditions.
A 2023 study published in Clinical Gastroenterology and Hepatology found that women and people with certain GI diseases were more likely to experience bloating. There are many other conditions that can cause bloating. Six possible causes of bloating are discussed below.
1. You Have Gas
You can feel bloated when you have excess gas trapped in your digestive system. Common symptoms of gas include belching, bloating, and flatulence.
It’s normal to have symptoms of excess gas, especially after eating. Eating and drinking can cause you to swallow small amounts of air along with your food and drink. Certain activities may increase how much air you swallow, such as:
- Chewing gum or sucking on hard candy
- Drinking carbonated drinks
- Eating or drinking too fast
- Smoking
- Wearing loose-fitting dentures
The type of food you eat can also cause excess gas. Carbohydrates (such as sugar, starch, and fiber) can cause gas when the bacteria in your intestines begin to break it down. You may notice that you have more gas when you eat more carbohydrates.
Other foods that can cause excess gas include:
- Legumes (such as beans, lentils, and soybeans)
- Bran
- Green leafy vegetables
- Dairy products
- Fruits
- Sugar substitutes (such as sorbitol)
- Carbonated drinks
2. You Have a Food Intolerance
A food intolerance can occur if your digestive system has difficulty digesting (breaking down) certain foods.
A food intolerance is different from a food allergy, which is caused by your immune system. Food allergies have different symptoms than food intolerance, including rash, difficulty breathing, or swelling of your mouth and lips.
If you have a health condition that makes it difficult for you to break down certain foods, you may have increased gas and symptoms of bloating. Common food intolerances include lactose intolerance, gluten intolerance, and fructose intolerance. Other food chemicals that may cause symptoms of food intolerance include:
- Histamine — found in wine and cheese
- Caffeine — found in coffee, tea, and some soft drinks
- Alcohol
- Sulfites — found in beer and wine
- Monosodium glutamate (MSG) — found in ripe fruit, cured meat, and some savory foods
Lactose Intolerance
Lactose intolerance is the most common type of food intolerance. It’s estimated that about 68% of the world’s population has lactose intolerance.
Lactose is a carbohydrate (sugar) found in milk. It can be found in any product made from milk and some processed foods. You may be intolerant to lactose if your body doesn’t make enough of an enzyme (a type of protein) called lactase that helps you break down lactose.
If you have lactose intolerance, you may experience symptoms of bloating within a few minutes or hours after eating lactose.
Fructose Intolerance
If you have fructose intolerance, you have difficulty absorbing and digesting fructose. It’s estimated that about 40% of people in the Western hemisphere have trouble digesting fructose.
Fructose is a type of sugar commonly found in fruit. People with an intolerance can experience symptoms of bloating shortly after eating fructose. People with severe fructose intolerance can experience serious complications, such as kidney damage, liver damage, coma, and death.
Gluten Intolerance
If you feel bloated or sick after eating food with gluten, you may have a gluten intolerance. It’s estimated that about 6% of Americans have a gluten intolerance.
Gluten is a protein found in some grains, including wheat, rye, and barley. If you have a gluten intolerance, you can experience other symptoms in addition to bloating, such as:
- Anxiety and depression
- Difficulty concentrating
- Fatigue
- Headache
- Joint pain
- Rash
- Nausea and vomiting