What happens if anaemia is not treated?

Anaemia means the blood cannot carry oxygen as effectively as it should. The body may compensate by making the heart beat faster, which can cause palpitations, reduced exercise tolerance and generalised weakness. Ongoing oxygen shortage can make everyday activity feel unusually difficult and may affect concentration or mood.

The effects depend on the type, severity and cause of anaemia, and how quickly it developed. Blood loss, low iron, vitamin B12 deficiency and other illnesses need different treatment. Leaving the cause unaddressed may allow symptoms to progress, so a blood test and clinical assessment are useful even when symptoms seem manageable.

Arrange an appointment if tiredness, pale skin, weakness, palpitations or shortness of breath persist. A clinician may review your diet, medicines, bleeding history and other health conditions, then order blood tests to identify the pattern and likely cause.

Do not start high-dose iron or other supplements without advice: the wrong supplement can delay diagnosis, and some causes require treatment beyond replacing a nutrient. Take prescribed treatment as directed and attend follow-up testing so the response and underlying cause can be checked.

Seek emergency help for severe or rapidly worsening shortness of breath, chest discomfort, fainting, confusion, marked weakness or signs of substantial bleeding. These symptoms can indicate that the body is not receiving enough oxygen or that another urgent problem is present.

If symptoms are new but not severe, contact a healthcare professional promptly rather than waiting for them to settle. Call emergency services if you feel unable to stand, breathe normally or stay awake.

What type of anaemia do my results suggest, and what cause needs checking? Could blood loss, diet, vitamin B12 deficiency or another condition be involved? Which treatment is appropriate, when should symptoms improve, and when should my blood tests be repeated?