Eli5:Why do we need to brush our teeth every day?

Question

Eli5:Why do we need to brush our teeth every day?

In: Other

Answer 1

I mean, you don’t – unless you want to keep them.

As for the serious answer – diet’s a lot higher in sugar than it was in the Paleolithic era, and the bacteria in your mouth essentially feed on sugar and poop out acid, which wears holes in the enamel covering your teeth and destroys them.