What does unintentional weight loss feel like with coeliac disease?

Weight may fall gradually, with clothes becoming looser and less energy for usual activities. Coeliac disease can injure the small intestine after gluten exposure, making digestion and absorption of nutrients less effective. You may also notice loose or bulky stools, abdominal discomfort, wind, nausea, or a feeling that meals do not restore your energy. Some people have few digestive symptoms, so the pattern is not the same for everyone.

This symptom alone cannot identify its cause. A clinician may consider coeliac disease alongside eating difficulties, thyroid conditions, infection, medication effects, and other digestive problems.

Arrange a medical appointment if weight is falling without intending it, especially when bowel changes or fatigue continue. Keep eating a varied diet as tolerated and record appetite, meals, bowel changes, abdominal symptoms, and weight trends. Do not start a gluten-free diet before coeliac testing unless a clinician advises it, because removing gluten can affect test results. A clinician may discuss blood tests and, when needed, further assessment.

Seek urgent help for fainting, confusion, severe weakness, signs of dehydration, vomiting that prevents fluids, black or bloody stools, or severe worsening abdominal pain. Contact a clinician promptly if weight loss continues, you cannot maintain food or fluids, or diarrhoea is persistent. These features need assessment even when coeliac disease is only one possible explanation.

Could coeliac disease explain my weight change and bowel symptoms? Should I continue eating gluten before testing? Which tests would assess anaemia or nutrient problems? What symptoms should make me contact you sooner?