Bloating and weight loss: what should you know?

Bloating may reflect trapped gas, constipation, food intolerance or a change in gut movement. Weight loss that was not intended can happen when eating becomes uncomfortable, but it may also relate to poor absorption or an infection. Coeliac Disease, Giardiasis, Helicobacter Pylori Infection and Irritable Bowel Syndrome are examples a clinician may consider; the symptom combination does not identify one diagnosis by itself.

Record when the swelling appears, your meals, stool pattern, appetite and weight trend. Keep eating regular, tolerable meals and drink fluids unless a clinician has advised otherwise. Avoid starting a strict elimination diet before assessment, because it can make the cause harder to identify. Nutrition Counselling may help if food fear or restricted eating is developing.

Arrange a medical appointment for ongoing bloating with unplanned weight loss. Seek urgent help for severe or rapidly worsening pain, repeated vomiting, a swollen hard abdomen, inability to pass stool or gas, black or bloody stool, fainting or marked weakness.

Ask which symptoms make testing more urgent, whether blood or stool tests are appropriate, and whether medicines, diet changes or recent travel could explain the pattern.