An iron-containing compound formed when hemoglobin breaks down, used by the body to store iron.
From Greek 'haima' (blood) + 'sideros' (iron). The term names the iron-storage product that results from normal red blood cell recycling.
Your body is incredibly efficient at recycling—when red blood cells die, hemosiderin extracts the iron and stores it so you can build new hemoglobin, making you literally 're-use' the same iron atoms!
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