铁是人体最重要的必需营养素之一。妇女、儿童的缺铁性贫血仍是我国当前较为突出的营养问题之一。科学地进行铁补充有助于改善人体的铁营养状态。 铁剂的类型选择 食物中的铁有两种类型:血红素铁和非血红素铁。血红素铁存在于肉、鱼、禽等动物的含血内脏及肌肉中,其吸收率较高,这是因为它在胃肠道内不被水解。因此,它的吸收不受膳食其它成分,如纤维、草酸盐、植酸盐、磷酸盐和酚所抑制。非血红素铁主要存在于谷类、蔬菜等植物性食物中,以及动物性食物除血红素铁的剩余部分。牛奶和鸡蛋中的铁,还有食物中强化的铁也是非血红素铁,它可与上述膳食 Iron is one of the most important essential nutrients in the body. Iron deficiency anemia among women and children is still one of the more prominent nutritional problems in our country. Scientifically iron supplementation helps to improve the body’s nutritional status. Iron type of choice There are two types of iron in food: heme iron and non-heme iron. Heme iron is present in the blood containing viscera and muscles of animals such as meat, fish and poultry and has a high absorption rate because it is not hydrolyzed in the gastrointestinal tract. Therefore, its absorption is not inhibited by other dietary ingredients, such as fiber, oxalate, phytate, phosphate and phenol. Non-heme iron is found primarily in plant foods such as cereals, vegetables, and animal food, with the exception of the remainder of heme iron. Iron in milk and eggs, and fortified iron in food are also non-heme iron, which can be used with the above diet