What should you know about gut bloating?

Bloating can happen when gas builds up, bowel movement slows, or the gut reacts to particular foods. It may occur with [Irritable Bowel Syndrome](/conditions/irritable-bowel-syndrome/), [Food Intolerance](/conditions/food-intolerance/), or [Lactose Intolerance](/conditions/lactose-intolerance/). Persistent symptoms can also need assessment for conditions such as [Coeliac Disease](/conditions/coeliac-disease/), [Giardiasis](/conditions/giardiasis/), or [Helicobacter Pylori Infection](/conditions/helicobacter-pylori-infection/). The pattern matters: note timing, meals, bowel changes, pain, and whether the abdomen visibly enlarges.

Eat slowly, chew thoroughly, drink water regularly, and take gentle movement after meals. Smaller portions may be easier when large meals worsen fullness. Keep a short food-and-symptom diary rather than removing many foods at once. A clinician or [Nutrition Counselling](/treatments/lifestyle-and-wellness/nutrition-counselling/) service can help test dietary patterns safely, while constipation, reflux, or an intolerance can be assessed and treated when present. Avoid starting a restrictive diet without advice if it could reduce nutritional variety.

Book a medical review if bloating is new and persistent, repeatedly returns, or comes with weight loss, ongoing diarrhoea, constipation that does not settle, vomiting, anaemia symptoms, or a change in appetite. Seek urgent help for severe or rapidly worsening pain, a rigid or markedly swollen abdomen, repeated vomiting, inability to pass stool or gas, or blood in the stool.

Ask whether your symptoms fit a food-related problem, constipation, or a condition needing tests; which foods should be recorded; and whether you need blood, stool, or breath testing. Bring your symptom diary and a list of medicines, supplements, and recent travel.