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Bloating and a Swollen Stomach – Causes and Solutions

Written by:

Gina Theman

What is a bloated stomach?

A bloated or swollen stomach – often described as feeling like a balloon – is a sensation where the abdomen feels tight or protrudes more than usual. It's typically caused by gas in the intestine, constipation, or our eating habits. Sometimes, the discomfort is linked to hormones, stress, or sensitivity to certain foods.

The terms bloated stomach, swollen stomach, distended stomach, and tight and swollen stomach all describe the same type of symptom in practice.

Common causes of a swollen and distended stomach

1) Gas-producing foods and FODMAPs

Certain carbohydrates (found in onions, beans, cabbage, wheat, some fruits, and sweeteners like sorbitol/xylitol) ferment in the large intestine, which can cause gas and a swollen stomach. This is normal, but the amount and individual sensitivity vary from person to person.

2) Constipation

When stool remains in the intestine for longer, gas can build up more easily, making the stomach feel tight and sometimes painful. Common causes include insufficient fluid intake, a fibre imbalance, lack of movement, and irregular toilet habits.

3) Eating habits

Eating quickly, talking a lot while eating, or drinking fizzy drinks can cause you to swallow more air (aerophagia), which can lead to that balloon-like feeling.

4) Portion size and meal patterns

Large portions, late meals, or frequent snacking can make the stomach feel distended. The digestive system thrives on regularity.

5) Sensitivities and intolerances

  • Lactose intolerance can cause gas, a bloated stomach, and abdominal pain.

  • Coeliac disease (gluten intolerance) and IBS can also cause similar symptoms. Discuss recurring issues with a healthcare professional for a proper diagnosis.

6) Hormonal fluctuations

Many people experience a swollen stomach before their period. The menopause can also affect bowel movements and fluid balance.

7) Medication and lifestyle

Certain medications (e.g., iron supplements), stress, and lack of sleep can affect the stomach and bowel movements.

Stomach pain after eating – possible explanations

Stomach pain after eating can be due to gas, eating too quickly, large portions, fatty or heavily spiced dishes, alcohol, or intolerances. If you often experience bloating and pain after eating the same types of food, note any patterns in a food diary and try making adjustments (see tips below). Seek medical advice for persistent pain.

Quick tips that may relieve a bloated stomach

  • Eat slowly and chew thoroughly. Put your cutlery down between bites.

  • Reduce fizzy drinks and chewing gum (as you swallow air).

  • Try keeping a food diary for 2–3 weeks to identify personal triggers.

  • Adjust your fibre intake – increase or decrease to a suitable level and drink water with fibre-rich meals.

  • Move daily (a walk after a meal can help with bowel movement).

  • Try to eat regular meals and avoid very large portions late in the evening.

  • Manage stress (breathing exercises, a sleep routine, short breaks).

Long-term habits that can help

  • Base your diet on foods that make you feel good and avoid an unnecessarily long list of 'forbidden' items.

  • Fibre balance: include vegetables, fruit/berries, whole grains, and legumes to the extent your stomach can tolerate them.

  • Hydration: aim for a steady intake throughout the day.

  • Toilet routine: give yourself time, preferably after breakfast or lunch.

  • Movement: 20–30 minutes of gentle activity most days supports regular bowel habits.

  • Individual adjustment: what helps one person may irritate another.

14-day checklist to try

  • Eat at a calm pace and avoid talking or chewing gum during meals

  • Choose still drinks with your food

  • Walk for 10–20 minutes after larger meals

  • Maintain regular mealtimes and avoid very large, late portions

  • Fine-tune your fibre intake (not too little, not too much) + drink water

  • Keep a food diary and note connections: food → symptom (0–10) → time

  • Prioritise sleep and take short stress-relief breaks every day

Please note:

We make no medical treatment claims and recommend that you consult a healthcare professional for long-term issues. If you are pregnant, breastfeeding, taking medication, or have a diagnosed gastrointestinal condition, please consult with a healthcare professional before making any changes. This article provides general information and does not replace individual medical advice.

Questions and Answers about a Swollen Stomach (FAQ)

The most common causes are gas formation from certain foods, constipation, eating too quickly, or large portions. Stress and hormonal fluctuations can also contribute.

Start by eating more slowly, reducing fizzy drinks, taking a short walk after meals, and drinking water with fibre-rich food. For daily discomfort, see the section on long-term habits.

It's often due to gas, overeating, or an intolerance. For recurring stomach pain after eating, keep a food diary and seek medical advice if the pain persists.

There are over-the-counter options that can help some people with gas-related issues. Consult a pharmacist or healthcare professional about what is right for you. Medication should not be used to mask long-term symptoms – it's important to find the underlying cause.

A 'balloon stomach' describes a symptom (bloating). IBS is a diagnosis with several criteria (pain, changes in bowel habits, etc.). You can have a bloated stomach without having IBS, and vice versa.

It can be temporary (e.g., hormonal), but frequent urges to urinate along with a burning sensation or fever could indicate a UTI. Seek medical advice if you suspect this or if the symptoms persist.