中国科学报 我有话说接吻能传播大量口腔细菌。图片来源：MICHAEL BLANN
每当你与爱人分享一个法式长吻时，你能转移8000万个细菌到他或她的口腔。一项涉及21对亲密恋人的新研究得出了这个令人不快的结论。
在荷兰阿姆斯特丹的一个动物园里，科学家在参与者接吻前后，用棉签在他们的口腔中进行了取样，结果研究人员没有发现参与者口腔内的细菌组成（或微生物群）发生大的改变。
这可能是因为这些伴侣经常接吻，他们的口腔变成相同细菌群落的寄生地。另外，相爱的人也可能有相似的生活方式和饮食习惯，这也能够影响他们口腔中的微生物群。
为了估计在亲密接吻时传播了多少细菌，该研究小组让其中一个人饮用益生菌酸奶，这样他或她的口腔里就充满了并不常见的细菌，然后参与者再次接吻。
实验结果显示，人们在接吻时能转移大约8000万个细菌，研究人员近日将相关报告发表于Microbiome上。不过，科学家表示，也许这一数字听上去十分巨大，但口腔本身就是数十亿细菌的“家园”。因此，这或许根本不会令人作呕 。 Kissing can spread 80 million bacteria
Kissing can spread a large number of bacteria in the mouth.Image: MICHAEL BLANN
Every time you share a French kiss with your lover, can you transfer 80 million bacteria to his or her mouth.A new study involving 21 of intimate lovers come to the conclusion that the unpleasant.
In Amsterdam in the Netherlands, a zoo, the scientists in the participants before and after kissing, in their mouth swab sampling, the researchers found no participants in the mouth of bacteria or microbiota big change.
This may be because the partner often kiss, their mouth into the same bacteria parasitic.In addition, people who love each other may also have similar lifestyle and eating habits, which can affect the microbial communities in their mouth.
In order to estimate how many bacteria to the spread of intimate kiss, let one of them, the team probiotic yogurt drink, so that his or her mouth is full of not common bacteria, then the participants to kiss again.
The experimental results showed that when kissing can transfer about 80 million bacteria, researchers have the related report published on the Microbiome.According to scientists, however, may be a number that sounds very great, but the mouth is billions of bacteria "homeland".As a result, it may not disgusting.(cheong)
[editor: Chen Baihui]
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