What should you know about painful bloating after eating?

Eating quickly, fizzy drinks, large meals, and chewing gum can increase swallowed air. Fermentation of some carbohydrates can produce gas, while constipation may make post-meal pressure more noticeable. Lactose intolerance or another food intolerance may cause symptoms after a recurring food pattern. Coeliac disease, irritable bowel syndrome, giardiasis, and Helicobacter pylori infection can also affect digestion, but the symptom alone cannot identify a cause. Record how soon symptoms begin, what you ate, stool changes, and whether passing gas or opening the bowels helps.

Slow the pace of meals, take smaller portions, and avoid gulping drinks. Walk gently after eating and maintain regular fluids. Change one suspected trigger at a time and keep meals nutritionally varied; a dietitian or nutrition counsellor can help if the list of avoided foods is growing. Do not permanently exclude gluten before coeliac testing has been discussed. If constipation is present, increase fibre gradually and seek advice if pain worsens.

Seek urgent help for severe sudden pain, repeated vomiting, a markedly swollen or rigid abdomen, blood or black stool, fever, fainting, or inability to pass stool or gas. Book an appointment if symptoms continue, interrupt meals, recur with many foods, or come with diarrhoea, constipation, weight loss, or poor appetite. A clinician can decide whether examination or testing is needed.

Ask whether the timing suggests intolerance, constipation, reflux, or another digestive issue; which tests are suitable; and how to keep your diet balanced while investigating triggers.