Foods That Cause Excessive Gas

Gas, also known as flatulence, is the presence of air or gas in the digestive tract. It is a normal part of the digestive process and typically occurs due to swallowing air or food breakdown by bacteria in the large intestine. Gas comprises nitrogen, oxygen, carbon dioxide, hydrogen, and sometimes methane and is typically expelled from the body through burping or passing gas. While gas is a normal bodily function, excessive gas or gas associated with pain or discomfort can indicate an underlying medical condition and should be evaluated by a healthcare professional.

Symptoms of Gas

The most common symptom of gas is flatulence or passing gas through the rectum. However, other symptoms can accompany excessive gas −

  • Bloating − This is a feeling of fullness or tightness in the abdomen.

  • Abdominal pain or discomfort − Gas can cause cramping or aching in the abdomen.

  • Belching − This is releasing air from the stomach through the mouth.

  • Nausea − Some people may feel nauseous with excessive gas.

  • Changes in bowel movements − Gas can cause diarrhea, constipation, or alternating bouts of both.

  • Abdominal distension − This is when the abdomen becomes visibly swollen or distended.

These symptoms can vary in severity and duration depending on the individual and the cause of the gas. Excessive gas can sometimes indicate a more serious underlying condition, such as celiac disease, irritable bowel syndrome (IBS), or inflammatory bowel disease (IBD). If you're experiencing persistent or severe symptoms, it's a good idea to consult a healthcare professional to rule out any underlying conditions.

Foods That Cause Gas

Several foods can cause gas in some people. Here are some common culprits −

  • Beans and legumes − These contain high amounts of fiber and complex sugars that can be difficult to digest for some people.

  • Cruciferous vegetables − Vegetables like broccoli, cauliflower, and cabbage contain a sugar called raffinose, which is difficult for the body to digest and can cause gas.

  • Dairy products − When consuming dairy products, people who are lactose intolerant may experience gas and bloating.

  • Fruits − Fruits like apples, pears, and peaches contain fructose, which can be difficult for some people to digest and can cause gas.

  • High-fat foods − Foods that are high in fat can slow down digestion, which can lead to gas and bloating.

  • Carbonated beverages − Carbonation can cause gas to build up in the stomach, leading to bloating.

  • Whole grains − Whole grains like wheat, oats, and barley contain fiber and complex sugars that can be difficult to digest for some people.

Medical Conditions that Cause Gas

Various medical conditions can also cause excessive gas. Here are some common ones −

  • Irritable bowel syndrome (IBS) − IBS is a long-term disorder of the large intestine that can lead to discomfort in the abdomen, bloating, and changes in bowel habits.

  • Inflammatory bowel disease (IBD) − IBD is a set of long-term illnesses that cause inflammation in the gastrointestinal tract and can result in symptoms like diarrhea, weight loss, and tummy aches.

  • Celiac disease − An autoimmune condition called celiac disease makes the body respond to the protein gluten, which is present in grains, including wheat, barley, and rye. It may result in gastrointestinal issues such as gas, bloating, and diarrhea.

  • Small intestinal bacterial overgrowth (SIBO) − SIBO is a condition with an overgrowth of bacteria in the small intestine, which can cause gas, bloating, and diarrhea.

  • Pancreatic insufficiency − Pancreatic insufficiency is when the pancreas does not produce enough digestive enzymes, leading to gas, bloating, and diarrhea.

  • Gastroparesis − Gastroparesis is when the stomach takes longer than normal to empty, which can cause gas, bloating, and nausea.

  • Food intolerances − Food intolerances, such as lactose intolerance or fructose malabsorption, can cause gas, bloating, and other digestive symptoms.

If you're experiencing persistent or severe gas, bloating, or other digestive symptoms, it's a good idea to consult a healthcare professional to rule out any underlying medical conditions.

Diagnosing Gas

Diagnosing the cause of gas and gas pains typically involves a combination of medical history, physical examination, and sometimes additional tests. Here are some steps a healthcare professional may take to diagnose gas and gas pains −

  • Medical history − A healthcare professional will ask about your symptoms, medical history, and any medications or supplements you take.

  • Physical examination − A healthcare professional may perform a physical exam of the abdomen to check for any signs of inflammation or tenderness.

  • Diagnostic tests − Depending on your symptoms and medical history, your healthcare professional may recommend additional tests to rule out any underlying medical conditions.

These may include −

  • Stool tests − To check for infections or other abnormalities in the digestive tract.

  • Blood tests − To check for signs of inflammation or other abnormalities.

  • Breath tests − To check for lactose intolerance or small intestinal bacterial overgrowth (SIBO).

Once the underlying cause of gas and gas pains is identified, treatment options may vary depending on the grounds. Dietary changes or medications are sometimes recommended to manage symptoms. In other cases, further medical treatment may be necessary to address an underlying condition.

Treatment for Gas

The treatment for gas and gas pains will depend on the underlying cause. Here are some available treatments that may be recommended −

  • Dietary changes − Avoiding foods that cause gas or bloating, such as beans, cruciferous vegetables, and dairy products, may help reduce symptoms.

  • Over-the-counter medications − Antacids, simethicone, and activated charcoal can help relieve gas and bloating. Lactase supplements can help with lactose intolerance.

  • Prescription medications − If over-the-counter medications don't work, your healthcare professional may prescribe prokinetics, antibiotics, or antispasmodics to treat the underlying condition.

  • Lifestyle changes − Regular exercise and stress management techniques like yoga or meditation may help reduce gas and bloating.

  • Treating underlying conditions − If an underlying condition is causing gas and gas pains, treating the condition can help alleviate symptoms.

Lifestyle Changes to Reduce Gas

In addition to dietary changes, you can make several lifestyle changes to help reduce gas and bloating. Here are some examples −

  • Exercise regularly − Regular exercise can help promote healthy digestion and reduce gas and bloating.

  • Manage stress − Stress can affect digestion and cause gas and bloating. Try stress-reducing techniques like deep breathing, meditation, or yoga.

  • Chew your food thoroughly − Taking your time to chew it thoroughly can help break it down more easily, reducing the gas produced during digestion.

  • Avoid carbonated drinks − Carbonated drinks can increase gas production in the stomach and cause bloating.

  • Quit smoking − Smoking can cause excess air to be swallowed, leading to gas and bloating.

  • Eat smaller meals − Eating smaller, more frequent meals throughout the day can help keep the digestive system working efficiently and reduce gas and bloating.

  • Avoid chewing gum − Chewing gum can cause you to swallow air, leading to gas and bloating.

These lifestyle changes can help reduce gas and bloating and promote better digestive health. However, if you continue to experience persistent or severe gas and bloating, it's important to consult a healthcare professional to rule out any underlying medical conditions.


Several common foods can cause excessive gas in some people. Foods high in fiber, such as beans and legumes, cruciferous vegetables, high-fat foods, dairy products, carbonated beverages, artificial sweeteners, and wheat and gluten, are all potential culprits. However, it's important to note that not everyone will experience gas from these foods; some may be more sensitive than others. Keeping a food diary and tracking your symptoms can help identify patterns and determine which foods may be causing excessive gas and bloating. If you have concerns about excessive gas or other digestive issues, it's always a good idea to talk to your healthcare provider.

Updated on: 30-Mar-2023


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