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铁存在于体内所有细胞中,并在一些重要的生化反应中起重要的作用。体内铁的含量取决于:(1)体重;(2)血循环中血红蛋白的总量;以及(3)体内铁的储存量。铁的代谢可加以描述为二个环;其一为从体内细胞分解代谢的铁被继续重利用的内环;另一为体内铁的丢失和从膳食中吸收铁的外环。铁经常不断的从皮肤、肠道以及泌尿道丢
Iron is present in all cells in the body and plays an important role in some important biochemical reactions. The amount of iron in the body depends on: (1) body weight; (2) the total amount of hemoglobin in the blood circulation; and (3) the amount of iron stored in the body. Iron metabolism can be described as two rings; one is the inner ring that continues to be reused from the catabolism of cells in the body; the other is the outer ring that loses iron in the body and absorbs iron from the diet. Iron is constantly lost from the skin, intestines and urinary tract