Eight most vulnerable to infection kissing disease!

接吻最易传染八种疾病！

Known as "the kissing disease" since it is passed by close contact, this chronic condition is debilitating and may disrupt study.

这个病以“亲吻之病”闻名，因为它是通过亲密接触而传染的。这个慢性病会使人非常虚弱，可能会影响学习。

Kissing also conveys information about health status, since bad breath can be a sign of disease or ill-health.

接吻还能传达出一个人的健康状况，因为口臭是疾病或健康不佳的一种表现。

Kissing is also recommended for gums and teeth because it increases production of saliva, which helps kill the bacteria that cause tooth decay and gum disease.

接吻对牙龈和牙齿有好处。因为接吻可以增加唾液的分泌，从而有助于杀死引起蛀齿和牙龈疾病的细菌。

There are lots of ways you can get gum disease, but you may not have known you can get it from kissing your dog too.

感染牙龈疾病的方式很多，但你也许不知道亲吻自家的狗狗也会感染吧。