Each of us is a whole Universe for different bacteria An average person with a healthy microbiome commonly hosts about 1,000 different species of intestinal bacteria, roughly 300 species of bacteria living in the mouth, 850 species of skin bacteria and from a few dozen to several hundred bacterial species that inhabit the urogenital passages. And that's not counting viruses, microscopic fungi and parasites that are also part of our microbiome! You are not alone😅