10% Human: How Your Body's Microbes Hold the Key to Health and Happiness

An evolutionary biologist and science writer explores the widely-ignored role our gut microbes play in our health and well-being.

You are just 10% human. For every one of the cells that make up the vessel that you call your body, there are nine impostor cells hitching a ride. You are not just flesh and blood, muscle and bone, brain and skin, but also bacteria and fungi. Over your lifetime, you will carry the equivalent weight of five African elephants in microbes. You are not an individual ...