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三,铁缺乏对儿童健康影响据世界各国调查研究结果证明,一般人群叶中缺铁的发生率很高,早产婴儿、儿童、青年妇女及妊娠妇女尤为严重;据报道瑞典13～30岁的妇女居民中有40％的人缺铁,80％的孕妇均缺铁。美国1980年报告有30％的婴儿发生缺铁性贫血。我国各地缺铁性贫血患病率也较高,如上海郊区3岁以下儿童为57％,北京城区学龄儿童为48.9％,我省据1987年调查梅河口市2732名学龄前儿童缺铁性贫血患病率为37.1％,其中3岁以下小儿患病率为50%。
Third, iron deficiency on children’s health According to the results of surveys and studies in various countries around the world that iron deficiency in the population is very high incidence of premature children, children, young women and pregnant women is particularly serious; reported that 13 to 30-year-old Swedish women 40% of residents have iron deficiency and 80% of pregnant women have iron deficiency. In 1980, the United States reported that 30% of infants had iron deficiency anemia. The prevalence of iron deficiency anemia in our country is also high, such as Shanghai suburbs children under 3 years of age was 57%, 48.9% of school-age children in Beijing, according to the 1987 survey of Meihekou City, 2732 pre-school children with iron deficiency anemia The prevalence was 37.1%, of which children under 3 years prevalence rate of 50%.