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1 据全国营养调查,食物中铁的摄入量普遍能满足供给量标准,为什么我国缺铁性贫血的发病率仍较高? 答:通过大量的研究得知,关键的问题是进入人体的铁未能被很好的吸收、利用。由于许多植物性食物因含有大量的植酸盐、草酸盐、磷酸盐和植物纤维等干扰因素,使肠道对铁的吸收大为减少,一般吸收率仅1％,而我国进食植物性食物的量大大超过欧美等国家。因此,解决缺铁闻题并非简单的增加食物中铁摄入量就能解决。重要的是应如何提高食物铁在人体内的吸收、利用率。
1 According to the National Nutrition Survey, the intake of iron in food can generally meet the supply standards, and why the incidence of iron deficiency anemia in our country is still high? A: Through a large number of studies, the key issue is that iron enters the body without iron Can be well absorbed, use. Since many plant-based foods contain a large amount of phytates, oxalates, phosphates and plant fibers and other interfering factors, the intestinal absorption of iron is greatly reduced, the general absorption rate of only 1%, while China’s consumption of plant foods Much larger than the number of countries in Europe and the United States. Therefore, to solve the problem of iron deficiency is not simply to increase iron intake in food can be solved. The important thing is how to improve the absorption and utilization of food iron in the human body.