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据WHO综合30个国家的报道,人类足月低体重儿占17％。主要原因是营养不良,尤其是蛋白质摄入不足。国内多次调查,孕妇一般膳食中蛋白质、钙和维生素A、B_1、B_2、C以及胡罗卜素等均摄入不足。其中蛋白质的摄入量仅为我国规定标准的70～82.6％;铁的利用率也很低,孕妇贫血患病率高。鉴于孕妇长期营养不良不仅损害自身健康,而且影响宫内胎儿发育,因而寻找一种营养素全面、丰富、比例恰当,
According to reports from WHO in 30 countries, human low birth weight infants account for 17%. The main reason is malnutrition, especially protein intake. A number of domestic surveys have found that dietary intakes of protein, calcium, and vitamins A, B_1, B_2, C, and carotene in pregnant women are insufficient. Among them, the intake of protein is only 70-82.6% of the national standard; iron utilization is also very low, and the prevalence of anemia in pregnant women is high. In view of the long-term malnutrition of pregnant women not only damages their own health, but also affects fetal development within the uterus, so looking for a comprehensive, rich, and appropriate proportion of nutrients,