It might not be the garlic or onions,coffee or alcohol. Rather,a new study links it to the types of bacteria that dominate the back portion of the top of your tongue.

 
  • 研究发现,口腔异味并不一定是因为大蒜、洋葱、咖啡或酒精引起的,罪魁祸首有可能是位于舌尖背部的几种特殊类型的细菌。
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