Night-time stomach bloating: what to know

Bloating can feel like fullness, pressure, visible abdominal swelling, or excess wind. It may accumulate after meals as the gut moves food and gas along. Eating quickly, fizzy drinks, chewing gum, constipation, and large late meals can contribute. Irritable Bowel Syndrome and food intolerance can also present with recurrent bloating, often alongside altered bowel habits or abdominal discomfort.

Lactose intolerance and coeliac disease may cause bloating after particular foods. Giardiasis, Helicobacter Pylori Infection, and other digestive conditions are less common possibilities considered from the wider symptom pattern, travel history, and examination.

Try smaller evening meals, eat slowly, chew thoroughly, and choose water instead of fizzy drinks. Gentle walking after eating can support comfort. Keep a diary of foods, portions, bowel movements, pain, and timing rather than removing many foods at once. A nutrition counsellor can help plan a balanced trial if food seems to trigger symptoms.

Do not begin a gluten-free diet before discussing testing if coeliac disease is a concern, because changing gluten intake can affect the assessment. Read Bloating and Nutrition Counselling for related guidance.

Arrange a medical review when bloating is persistent, increasingly frequent, or accompanied by weight loss, ongoing diarrhoea or constipation, vomiting, blood in stool, or reduced appetite. Seek urgent help for severe or rapidly worsening pain, a rigid swollen abdomen, repeated vomiting, or inability to pass stool or gas.

Could constipation, lactose intolerance, IBS, coeliac disease, or another digestive problem explain this pattern? Which tests are appropriate? Should I change any foods before testing? What symptoms would require urgent care?