铁是人体所需的一种微量元素,如果缺乏可引起缺铁性贫血,但如果摄入过量可对身体产生副作用,造成不良后果。盲目过量的补铁会造成儿童体内含铁量过多,会影响对其他微量元素(如铜、锌、镁)等的吸收,特别容易造成缺锌症。过量吸收铁以后,会通过血液循环到心、肝、肺等重要器官,沉积后会引起血色素沉着症,损害这些脏器的功能。过量的铁吸收后还会沉积于胰腺,导致胰腺功能异常,可引起“青铜色糖尿病”。有些铁剂食品中含有二价铁离子,当一次大量摄入后,可使血清中铁浓度明显增高,超过血浆蛋白质的结合能力时,血液中的游离铁离子便会增加,导致儿童心 Iron is a trace element required by the human body, if the lack of iron deficiency anemia can cause, but if excessive intake of the body side effects, resulting in adverse consequences. Blind excessive iron can cause excessive iron content in children, will affect the absorption of other trace elements (such as copper, zinc, magnesium), especially prone to zinc deficiency. Excessive absorption of iron, the blood circulation to the heart, liver, lung and other vital organs, deposition will cause hemochromatosis, damage the function of these organs. Excess iron absorption will also be deposited in the pancreas, leading to pancreatic dysfunction, can cause “bronze diabetes.” Some iron foods contain ferrous iron ions, when a large number of intake, can make the serum iron concentration was significantly higher than the plasma protein binding capacity, the blood free iron ions will increase, resulting in children’s heart