我国一些汉族年长儿童或成年人,喝牛奶或食用奶制品后,常发生腹胀,腹鸣不适,甚至出现腹痛和腹泻,使得这些人不再想喝奶,甚至连奶糖也不敢吃了。研究证实,其主要原因多数是由于乳糖酶减少或缺乏引起的,被称为乳糖不耐症。牛奶中含有的碳水化合物是乳糖。乳糖是一种双糖,不能被小肠直接吸收,必须在 Some older Han children or adults in our country who drink milk or milk products often have abdominal distension, abdominal discomfort and even abdominal pain and diarrhea, making these people no longer want to drink milk and even drank milk candy . Studies confirm that the majority of the main reason is due to a decrease or lack of lactase, known as lactose intolerance. Milk contains carbohydrates are lactose. Lactose is a disaccharide that can not be directly absorbed by the small intestine and must be present