Anaemia is a condition in which a person's blood has a lower than normal number of red blood cells (RBCs), or the RBCs don't have enough haemoglobin.
Haemoglobin (an iron-rich protein that gives the red colour to blood) carries oxygen from the lungs to the rest of the body. In people with anaemia, the blood does not carry enough oxygen to the rest of the body. As a result, people with anaemia feel tired, along with other symptoms, because their bodies are not receiving enough oxygen. In severe or prolonged cases of anaemia, the lack of oxygen in the blood can cause serious and sometimes fatal damage to the heart and other organs of the body.
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