​ You probably don't spend a whole lot of time thinking about spit, or saliva. Unless, that is, you have experienced dry mouth, also known as xerostomia, or excessive saliva production. Although most people don't really notice or think about it unless something goes wrong, saliva is critical for digestion and helps maintain oral health. That's why ...

Spit is not something we think about often, if at all. Yet our mouths and even entire bodies rely on it to stay healthy. The production and function of saliva is one of those complex processes in our body that we take for granted on a daily basis unless something goes wrong.

The idea of spit may seem gross, but if you’ve ever experienced dry mouth, even temporarily, you probably realize how important it is.