Can coeliac disease cause iron deficiency anaemia?

Iron is needed to make haemoglobin, the part of red blood cells that carries oxygen. Coeliac disease can inflame and damage the small-intestinal lining, making it harder to absorb iron from meals. Iron deficiency anaemia may cause tiredness, headaches, dizziness, pale skin, breathlessness, a fast heartbeat, or unusual cravings, but some people have few symptoms.

Low iron is not automatically explained by coeliac disease. Blood loss, low dietary intake, pregnancy, and other absorption problems can also be involved. Blood tests usually assess haemoglobin, red blood cell features, and iron stores while the clinician considers the complete picture.

Speak with your GP or gastroenterology team if tests show iron deficiency, especially when it keeps returning or does not improve. Ask whether coeliac disease assessment is needed before changing your diet; starting a gluten-free diet first can affect testing. If coeliac disease is confirmed, follow the recommended gluten-free plan carefully to support intestinal recovery.

Iron replacement may be prescribed as tablets or another form depending on absorption, tolerance, and the severity of deficiency. Take it exactly as directed and attend repeat testing so response and the underlying cause can be reviewed.

Get urgent medical help for fainting, chest pain, severe breathlessness, a racing heartbeat with weakness, vomiting blood, black stools, or heavy ongoing bleeding. These signs need prompt assessment and should not be assumed to be a simple nutritional deficiency.

Ask whether your results confirm iron deficiency anaemia, whether coeliac testing should happen before dietary changes, and how iron treatment will be monitored. It is also reasonable to ask whether another source of blood loss or a second deficiency needs checking.