3 ms·
In human's natural state (hunter-gatherer), most of the deadly infectious diseases didn't plague us. They only started jumping to humans when we started doing a
by badpun 4y ago
In human's natural state (hunter-gatherer), most of the deadly infectious diseases didn't plague us. They only started jumping to humans when we started doing animal husbandry (new diseases got to us via close living with animals) and when we started living in dense cities. Both conditions were only met circa 10k years ago.
- dotancohen 4y agoThat's also around the time where our natural tooth defenses started to become overwhelmed, and cleaning of the mouth, tongue, teeth, and gums became necessary.