You are home to a community of trillions of microorganisms, including 38,000,000,000,000 bacteria that live in and on you. The gut microbiome is connected to various organ systems and pathways throughout the body that are crucial for your health. In a healthy state, the gut ...You are home to a community of trillions of microorganisms, including 38,000,000,000,000 bacteria that live in and on you.