• The communities of microbes that reside on and in all humans on Earth

  • The ratio of microorganisms to human cells in the body is 10 to 1

  • Over 30 trillion microbes exist on a single human

  • Over 10,000 microbial species inhabit the human body

  • 8 million microbial protein-coding genes have been found in the body, 360 times the number of human genes

  • Microbes are intimately woven into our health and act like an additional organ

  • When disrupted, these diverse microbial communities can drive a wide range of diseases