What does fatigue feel like with coeliac disease?

Coeliac disease can damage the small intestine when gluten triggers an immune response. This can interfere with absorption of nutrients, including iron, folate, and vitamin B12, and may contribute to anaemia or other deficiencies. The resulting tiredness can persist even after a full night of sleep.

You might tire quickly while working, studying, exercising, or managing household tasks. Some people notice a heavy, slowed-down feeling or trouble focusing. Fatigue may appear with bloating, abdominal discomfort, diarrhoea, constipation, weight change, mouth ulcers, or an itchy rash, although symptoms vary.

Book an appointment if fatigue continues or occurs with digestive symptoms. Keep eating a balanced diet while awaiting assessment and record foods, bowel changes, energy levels, and sleep. Do not begin a gluten-free diet before discussing testing with a clinician, because removing gluten can affect the accuracy of some diagnostic tests. Avoid supplements unless advised.

Seek prompt care for fainting, chest pain, severe breathlessness, black or bloody stools, inability to keep fluids down, or rapidly worsening weakness. Arrange routine assessment for ongoing fatigue, unintentional weight loss, persistent diarrhoea, or signs of anaemia such as paleness and racing heartbeat.

Ask which blood tests assess anaemia and nutrient levels, whether coeliac testing is appropriate, and how to prepare for it. Discuss safe dietary support and whether a dietitian can help you avoid deficiencies after diagnosis.