saudigastro.com/patients/bloating-and-belching
Category
Common
Red flags
5
This article is educational and does not replace your doctor's advice. Seek urgent care for any red-flag symptoms.
What is it?
Everyone has gas in the digestive tract. It comes from swallowed air and from bacteria in the large bowel breaking down food. Passing wind 10 to 20 times a day and belching after meals are normal. Bloating is the feeling of fullness or pressure in the abdomen, and distension is when the belly is actually visibly larger, often getting bigger through the day and settling overnight. Belching (burping) is the release of swallowed air from the stomach. Some people belch repeatedly because they unconsciously swallow or suck in air and expel it again before it reaches the stomach (supragastric belching), which is a learned habit rather than a disease of the stomach.
How common is it?
Very common. Many people have bloating from time to time, and it is one of the most frequent reasons for consulting a gastroenterologist. It is more frequent in women, and in people with irritable bowel syndrome, constipation or functional dyspepsia.
Why does it happen?
Common causes include swallowing air (eating fast, chewing gum, drinking through a straw, carbonated drinks, smoking), gas-producing foods (beans and lentils, onions, cabbage, some sweeteners), constipation, and a gut that is more sensitive or works differently (functional bloating, irritable bowel syndrome, functional dyspepsia). Some people have a coordination problem of the diaphragm and abdominal wall muscles that makes the belly protrude. Less often there is a specific condition: lactose intolerance (difficulty digesting milk sugar), coeliac disease (gluten reaction), small intestinal bacterial overgrowth (SIBO, too many bacteria in the small bowel), delayed stomach emptying, or fluid in the abdomen (ascites) from liver disease or other illness. Hormonal changes around periods also influence bloating.
Symptoms
- Feeling of fullness, tightness or pressure in the abdomen
- Visible swelling of the belly that increases during the day
- Frequent belching
- Passing more wind than usual
- Rumbling noises from the abdomen
- Mild stomach cramps that ease after passing wind or stool
- Feeling full soon after starting a meal
Red flags — seek urgent medical care
Unexplained weight loss, loss of appetite, or tiredness
Needs medical assessment to rule out a serious cause.
Blood in the stool, black stools, or anaemia
Suggests bleeding in the digestive tract and needs tests.
Persistent vomiting, difficulty swallowing, or symptoms that wake you at night
Not typical of functional bloating. Needs assessment.
New bloating or change in bowel habit starting after about age 50, or a family history of bowel cancer, ovarian cancer or coeliac disease
Needs a lower threshold for tests such as blood tests, colonoscopy, or imaging.
Progressive swelling of the abdomen with weight gain, swollen legs, or yellow eyes or skin
May be fluid in the abdomen (ascites) from liver or another illness. See a doctor soon.
How is it diagnosed?
In most people the diagnosis is made from your story and examination. The doctor will ask about food, drinks, medicines, bowel habit and your weight. If there are no red flags, extensive testing is not needed. Depending on your symptoms, limited tests may include blood tests for anaemia and coeliac disease, a stool test, and checking for constipation. Testing for lactose intolerance may be done by a trial of avoiding lactose, or a breath test. SIBO breath testing is controversial and results can be hard to interpret, so it is used only in selected people. Endoscopy, colonoscopy, ultrasound or CT scan are reserved for red flags. A keen watch on how symptoms respond to simple changes is often the most useful test.
Outlook — what to expect
Good. Bloating is rarely dangerous. Many people improve with changes in eating habits, treating constipation and understanding the cause. Symptoms may come and go for years, and this is common. If the symptoms change or red flags appear, tell your doctor.
Treatment
Habits & Lifestyle
Reducing swallowed air and moving regularly help many people. Supragastric belching responds to breathing techniques.
- Eat and drink slowly, chew food well, and do not talk while chewing. Fast eating at iftar is a common cause of swallowed air.
- Avoid chewing gum, sucking hard sweets, smoking (including shisha and vaping) and drinking through straws.
- Walk for 10 to 15 minutes after meals and stay active most days; this helps gas move through.
- For repeated belching, diaphragmatic (belly) breathing exercises, sometimes taught by a speech therapist or physiotherapist, can break the habit.
- Avoid tight belts and clothing around the waist, and avoid lying down straight after a meal.
Diet
Food does play a role, but extreme diets are not helpful. Make one change at a time and keep a short diary of food and symptoms.
- Reduce carbonated drinks (soft drinks, sparkling water, energy drinks). They add gas directly to the stomach.
- Have smaller, more regular meals instead of one large iftar meal. Break the fast with water and a few dates, pray, then eat the main meal slowly.
- Legumes (foul, lentils, chickpeas, beans), onions, cabbage and cauliflower produce gas for many people. You do not need to remove them; eat smaller portions, soak and cook legumes well, and increase fibre gradually.
- Dates and dried fruit are rich in natural sugars that ferment in some people. Try a smaller number, for example a few dates, rather than a large plateful.
- Sugar-free sweets, chewing gum and diet products with sweeteners ending in “tol” (sorbitol, mannitol, xylitol) often cause gas and loose stools.
- If you think milk is the problem, try lactose-free milk or yoghurt for 2 weeks. A short, supervised trial of a low-FODMAP diet may help some people with irritable bowel syndrome; do this with a dietitian rather than permanently restricting foods.
Medications
Medicines are chosen by the cause. There is no single tablet that cures bloating, and over-the-counter products have limited proof.
- Treat constipation if present; this often relieves bloating (see Chronic Constipation).
- Simethicone and similar anti-gas products are safe but their benefit is uncertain. A short trial is reasonable.
- Your doctor may suggest antispasmodic medicines for cramps, peppermint oil, or certain probiotics for a trial period of about 4 weeks. Stop them if there is no benefit.
- If SIBO, lactose intolerance or coeliac disease is confirmed, treatment targets that cause (for example, diet change or a course of antibiotics chosen by your doctor).
- Review your medicines with your doctor; some (certain diabetes and weight-loss injections, iron, fibre supplements, opioids) can cause bloating.
Procedures & Surgery
Procedures are not usually needed. Tests are used only to look for a specific cause when red flags or unexplained symptoms are present.
- Endoscopy or colonoscopy only for red flags or age-related screening.
- Ultrasound or CT scan if abdominal swelling or fluid is suspected.
- Anorectal tests and biofeedback therapy for people whose bloating is linked with difficulty emptying the bowel.
Living with the condition
- Most people do best with a balanced diet and regular meals rather than cutting out many foods.
- Stress and poor sleep can make symptoms worse; regular exercise and relaxation help.
- Keep a short symptom diary for two weeks before your visit; it makes the consultation more useful.
- Return to your doctor if symptoms change, worsen, or if any red flag appears.
In the Saudi context
Large iftar meals eaten quickly, soft drinks, sugary desserts, shisha, chewing gum and the habit of eating legumes such as foul in big portions are common contributors in our region. Slowing down at iftar, limiting fizzy drinks and moderating the number of dates often brings quick relief.
Questions to ask your doctor
Save this list or print it before your appointment — doctors appreciate prepared patients.
- Could my bloating be caused by coeliac disease, lactose intolerance or constipation?
- Do I need any tests, or can we try changes first?
- Could any of my medicines be causing the bloating?
- Would breathing exercises or seeing a dietitian help?
- Which symptoms should make me come back sooner?
Trusted resources
Was this guide helpful?
Status: Approved for publication by SGA; individual clinician review is ongoing · Published 24/04/2026
For general education only; it does not replace your doctor’s advice. Individual clinician review of this guide is ongoing. SGA clinician? Review this guide