A microbiome is the sum total of the microbes of bacteria, fungi, and viruses that live inside your body. They are all over your skin and in your gut. Bacteria alone accounts for 2-3 lbs of your body mass.
What’s interesting is that when you’re born, you’re mostly sterile. You acquire microbes from your mother and the environment. Then, the way you live your life and the things you interact with shape the kind of microbes that colonize and live inside you. This results in your own unique profile, and even identical twins have different profiles.
