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主题:【整理】汉族人不太适合喝牛奶(经王二狗朋友指正后修改) -- 潇洒

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家园 wikipedia说,在常喝奶的东亚人里,乳糖不耐受的人

似乎少得多

Some cultures, such as that of Japan, where dairy consumption has been on the increase, demonstrate a lower prevalence of lactose intolerance in spite of a genetic predisposition[11]

在一些乳制品消费量正在增加的地区,比如日本,实际观察到的乳糖不耐受比例比从遗传学上预测的要低。

这个是根据一个1975年的研究:外链出处

Gastroenterol Jpn. 1975;10(1):29-34.

Studies on the etiology of milk intolerance in Japanese adults.

Yoshida Y, Sasaki G, Goto S, Yanagiya S, Takashina K.

1. The incidence of milk intolerance is approximately 19% in Japanese adults when 200 ml of milk is given. However, a much greater incidence was assumed when considered under the criteria of Western standard. 2. The lactase activity was significantly greater in milk drinkers than non-drinkers. And, internationally, the active is higher in those nationalities whose milk consumption is greater. 3. Lactase is an adaptive enzyme and rather easily induced by lactose load feeding in animals. From the data of our own and of the literature, it was further confirmed that environmental factors play a more important role than genetic factors in the etio-pathogenesis of milk intolerance.

PMID: 1234085 [PubMed - indexed for MEDLINE]

1 观察到日本成人在喝掉200mL牛奶之后出现乳糖不耐受症状的比例是19%。不过如果按西方标准算的话,这个数字要高得多。

2 常喝牛奶的人身体里的乳糖酶活性比不喝的人要高。从不同国别的人群看,消费牛奶量高的国家的人,身体里的乳糖酶活性要高一些。

3 乳糖酶是可以诱导的,而且在动物里可以被很容易的通过喂乳糖的办法诱导出来。

从作者和已往文献的数据看,可以进一步证实,在乳糖不耐受这个问题上,环境因素比遗传因素的影响要大些。

那么从这个文献看来,对于我们中国人来说,喝牛奶也是可以练出来的。

所以看来网友【山要】说得是对的:而且乳糖酶是诱导酶

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