eli5: Why does your mouth water when you see something delicious?

Question

It’s always something I have thought about. Is it lubricating our mouth?

In: Biology

Answer 1

It’s a part of the digestion process. The saliva helps break down food. It’s your brain telling your body “it’s time to prep for food time” In biology we had to write a paper on what happens when you eat a cheese burger through every step of the digestion process. Every paper had to start with “the process of digestion starts before food even enters your mouth”