What should you know about celiac disease gluten?

Gluten is a group of proteins found in wheat, barley and rye. In coeliac disease, eating gluten can activate the immune system and injure the small intestine lining. This may interfere with absorbing nutrients and may be associated with abdominal pain, bloating, diarrhoea or fatigue. A symptom alone does not establish coeliac disease, because several digestive and nutritional conditions can cause similar problems.

A blood test is commonly part of the assessment, and further testing may be needed. If you stop eating gluten first, results may become harder to interpret. Discuss the testing plan with a clinician before making a strict dietary change.

Arrange an assessment if symptoms persist, recur after eating gluten, or occur alongside unexplained nutrient deficiency. Keep a short record of meals, symptoms, bowel changes and any weight change, but continue your usual diet until testing advice is given. Do not borrow a gluten-free diet plan or assume that avoiding bread alone removes every source; ingredients can appear in sauces, snacks and prepared foods.

After diagnosis, a clinician or dietitian can explain label reading, balanced alternatives and how to avoid accidental exposure. Follow-up may include checking symptoms and nutritional concerns such as iron or vitamin B12 deficiency.

Book a routine appointment for ongoing diarrhoea, bloating, abdominal discomfort, fatigue or suspected nutrient deficiency. Seek prompt medical help for severe or worsening abdominal pain, repeated vomiting, black or bloody stools, fainting, marked weakness, or signs of dehydration such as very little urine and dizziness.

Ask whether you should keep eating gluten until testing is complete, which blood tests are appropriate, whether a specialist assessment is needed, and how nutrition will be monitored if coeliac disease is confirmed.