Does coeliac disease cause bloating?

Coeliac disease is an immune condition triggered by gluten, a protein found in wheat, barley and rye. The reaction affects the lining of the small intestine. This can interfere with digestion and absorption, allowing symptoms such as abdominal swelling, excess wind, loose stools, constipation, nausea or tiredness to occur. Bloating may come and go, and it can be more noticeable after meals containing gluten.

Bloating has many possible causes, including food intolerance, constipation, irritable bowel syndrome and swallowed air. Having bloating alone does not establish coeliac disease. A clinician considers the whole pattern, including bowel changes, weight change, anaemia, family history and whether symptoms persist.

Arrange a medical review if bloating is persistent, keeps returning, or occurs with diarrhoea, weight loss, marked fatigue or recurrent mouth ulcers. Testing commonly starts with blood tests and may be followed by specialist assessment. Keep eating your usual gluten-containing diet until you have spoken with a clinician, because removing gluten first can affect the accuracy of coeliac testing.

Record meals, bowel symptoms, abdominal discomfort and timing for several days. This can help identify patterns without assuming that one food is responsible. Do not start a strict gluten-free diet without advice about testing and balanced replacement foods.

Seek urgent medical help for severe or rapidly worsening abdominal pain, repeated vomiting, a very swollen and hard abdomen, fainting, blood in the stool, or black stools. Prompt assessment is also sensible if you cannot keep fluids down or are becoming unusually weak. These warning signs need assessment regardless of whether coeliac disease is being considered.

You could ask: Could my symptoms fit coeliac disease or another digestive condition? Should I have coeliac blood tests before changing my diet? How long should I continue tracking meals and bowel changes? If testing is positive, do I need referral to a gastroenterology specialist or a dietitian?