How is iron deficiency anaemia different in pregnancy?

During pregnancy, the body makes more blood to support the placenta and growing baby. This raises iron demand. Tiredness, headaches, dizziness, paleness, a fast heartbeat or breathlessness can occur, although these symptoms also have other causes. A blood count and iron-related tests help distinguish iron deficiency from normal pregnancy changes and other types of anaemia.

The cause may involve low iron intake, reduced absorption, previous heavy menstrual bleeding, closely spaced pregnancies or blood loss. Your clinician may also consider your pregnancy stage and any digestive symptoms before recommending a plan.

Attend the blood tests offered during antenatal care and tell your team about fatigue, dizziness, palpitations, breathlessness or unusual cravings. Take iron only in the form and dose advised for you. Some people develop constipation, nausea or darker stools with iron; report troublesome effects so the plan can be adjusted safely.

Include iron-containing foods such as meat, beans, lentils, leafy vegetables or fortified foods where suitable, while remembering that diet may not replace prescribed treatment. Keep follow-up appointments so your response can be checked. Read about [Iron Deficiency Anaemia](/conditions/iron-deficiency-anaemia/).

Seek urgent care for severe breathlessness at rest, chest pain, fainting, a very fast or irregular heartbeat, heavy bleeding or marked weakness. Contact your maternity team promptly if symptoms are steadily worsening or you cannot tolerate the recommended iron, because untreated symptoms and treatment side effects both need practical review.

Ask which blood tests confirm iron deficiency, what dose and formulation suit your pregnancy, how to take it around food or other medicines, and when your blood count should be rechecked. Ask what symptoms mean you should call sooner.