Without even meaning to, you just launched a million microbes at these pages. They disperse from your body, bleeding into the space around you, covering your home, possessions and friends. Every time you touch an object, you leave a microbial imprint upon it, autographing it with invisible life. Every step you take, every move you make, you cast a personalised cloud of microbes into space.
In many ways microbes â bacteria and other microscopic life forms â are part of you. Some 39 trillion are in your body, roughly one for each of your own human cells. This community â the so-called microbiome â doesnât cause disease; rather, it helps to build, nourish, and protect you. They digest your food, train your immune system, sculpt and shape your organs, defendâŚ