Can chronic kidney disease cause anaemia?

Anaemia means the blood has too few healthy red blood cells or too little haemoglobin to carry oxygen efficiently. Kidney disease can also affect iron handling, shorten red blood cell survival, and allow waste products to build up. These changes may leave you tired, weak, breathless with activity, dizzy, or less able to concentrate, although some people have no obvious symptoms.

Anaemia has several possible causes, so a kidney condition does not prove that kidney disease is responsible. Blood tests can assess haemoglobin, kidney function, iron stores, vitamin levels, and signs of inflammation. Finding the cause matters because treatment differs.

Arrange a clinical review if tiredness, reduced stamina, paleness, or breathlessness persists. Your clinician may review your medicines and request a full blood count, iron studies, and kidney tests. Do not start iron or other supplements without advice, because the correct treatment depends on the result and some supplements can be unsuitable with kidney disease.

Treatment may involve correcting an iron or vitamin deficiency, managing the kidney condition, or using prescribed medicines that encourage red blood cell production. Keep follow-up appointments so blood results and symptoms can be monitored.

Seek urgent medical help for severe or rapidly worsening breathlessness, fainting, chest pain, confusion, blue lips, or marked weakness. Vomiting blood, passing black stools, or other heavy bleeding also needs prompt assessment. These symptoms can have causes beyond anaemia and should not be attributed to kidney disease without examination.

Ask whether your blood results show anaemia, which cause is most likely, whether iron or vitamin testing is needed, and how your kidney function affects treatment. You can also ask when repeat blood tests are due and which symptoms should prompt an earlier review.