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The absorption of iron occurs mainly in the proximal duodenum, with the amount absorbed being influenced by the storage capacity of the iron stores. In humans, this is remarkable because only 0.5–1 mg of the approximately 4–5 g of total body iron in adults is lost daily.
Iron absorption includes
Reduction of ferric iron means that after reaching the duodenum, ferric iron is reduced by ferric reductases located in the apical [brush border](brain://Mu1V-8D7j0GDhv2JsyXSXg/Brus…