Anaemia means that the blood has too little haemoglobin or too few healthy red blood cells to carry oxygen effectively. Common symptoms include tiredness, weakness, dizziness, breathlessness on exertion, palpitations and reduced ability to work or exercise. Some people have few symptoms, especially when anaemia develops slowly.
Anaemia is a finding, not a single disease
Iron deficiency is a common cause, but it is not the only cause. Anaemia can also result from vitamin B12 or folate deficiency, blood loss, chronic kidney disease, inflammation, infections, gastrointestinal disease, gynaecological conditions and inherited blood disorders such as thalassaemia. Repeatedly taking iron without understanding the cause may delay the correct diagnosis.
Why a health check-up matters
A complete blood count is usually the starting point. Depending on the pattern and your history, your doctor may advise tests such as iron studies, vitamin B12 or folate levels, kidney tests, stool testing or other investigations. Women with heavy menstrual bleeding, people with gastrointestinal symptoms, older adults and anyone with unexplained or recurrent anaemia may require assessment for ongoing blood loss or another underlying illness.
Take treatment for the recommended duration
If iron, vitamin B12, folate or another treatment has been prescribed after appropriate assessment, take it as directed. Symptoms may improve before body stores are fully replenished, so stopping treatment too early may allow the problem to return. Conversely, iron should not be continued indefinitely without a reason.
Follow-up blood tests help confirm that haemoglobin is improving as expected. If it does not improve, the diagnosis, adherence, absorption, ongoing blood loss and other causes may need to be reconsidered.
Diet can support prevention and recovery
Include iron-rich foods appropriate to your dietary pattern. Sources include pulses and beans, green leafy vegetables, nuts and seeds, and animal-source foods where consumed. Vitamin C-containing foods can help the body absorb non-haem iron from plant foods. A varied diet also helps provide folate, vitamin B12, protein and other nutrients needed for healthy blood formation.
Diet alone may not be enough to correct moderate or severe deficiency, significant ongoing blood loss or anaemia caused by another disease. Medical treatment of the underlying cause is essential.
Exercise: return gradually
Regular activity is important for long-term health, but significant anaemia can reduce exercise tolerance. If you are markedly breathless, dizzy, faint or have chest discomfort, avoid strenuous activity and seek medical assessment. As the anaemia improves, activity can usually be increased gradually.
When should you seek urgent care?
Seek prompt medical attention for fainting, chest pain, severe breathlessness, very rapid heartbeat, active bleeding, black stools, vomiting blood or rapidly worsening weakness.
Take-home message
Anaemia should not be managed by guessing. Get the cause identified, take prescribed treatment for the appropriate duration, attend follow-up checks and support recovery with a balanced nutrient-rich diet. Prevention begins by recognizing nutritional deficiency, blood loss and underlying disease early.