铁营养缺乏症是最常见的营养缺乏症之一,缺铁性贫血是最多见的血液病,发展中国家患病率高达30-90%,发达国家为10-30%,我国7岁以下小孩为20-70%,尤以6月至3岁婴儿和青春发育期的青少年患病率高。由于机体内很多酶含有铁,另不少酶本身虽不含铁,但要有铁存在才有活性,故缺铁机体很多酶活性降低,引起多种代谢改变,导致多个器官(系统)的功能紊乱,如神经、消化、肌肉、免疫和内分泌系统均有不同程度的改变。可见缺铁不但患病率很高,而且对人类健康危害大,应大力研究,积极防治。近年大量研究证明缺铁小儿有行为异常,对外界反应差,易怒、不安、注意力不集中, Iron deficiency deficiency is one of the most common nutritional deficiencies, iron deficiency anemia is the most common blood disease, the prevalence in developing countries as high as 30-90%, 10-30% in developed countries, China’s children under 7 years of age 20-70%, especially among infants and adolescents aged 6 months to 3 years old. Because many enzymes in the body contain iron, and many other enzymes themselves do not contain iron, but to have the existence of iron is active, so many iron deficiency body activity decreased, causing a variety of metabolic changes, resulting in multiple organs (system) Disorders, such as nervous, digestive, muscular, immune, and endocrine systems, change to varying degrees. Not only iron deficiency is not only high prevalence, but also a great harm to human health, we should vigorously study and actively prevent and treat. In recent years, a large number of studies have shown that iron deficiency children have abnormal behavior, poor response to the outside world, irritability, anxiety, lack of concentration,