你有没有喝完牛奶后出现腹痛、腹胀甚至腹泻的症状呢?如果有的话,那说明你有乳糖不耐症。乳类中含有一种糖叫乳糖.这是由一分子葡萄糖和一分子半乳糖组成的双糖。乳糖进入人体后要经过乳糖酶的分解才能被消化吸收.没有被分解的乳糖则会被排出体外,同时刺激肠道引起腹痛。人体内如果缺乏乳糖酶或乳糖酶活力低,不能很好地吸收和利用乳糖从而造成一些不适的现象就叫做乳糖 Have you had any symptoms of abdominal pain, bloating or even diarrhea after you have finished drinking milk? If yes, then you have lactose intolerance. The milk contains a sugar called lactose, which is a disaccharide composed of one molecule of glucose and one molecule of galactose. Lactose into the body to go through the decomposition of lactase can be digested and absorbed.Unolysis of lactose will be excreted, while stimulating the stomach to cause abdominal pain. If the body’s lack of lactase or lactase activity is low, can not properly absorb and use of lactose to cause some discomfort phenomenon is called lactose