We tend to think we're in charge of our bodies. But beneath the surface lives a vast microbial world that shapes our health every single day. This is your microbiome - an inner metropolis so complex and influential that scientists are now linking its tiny decisions to cancer risk, autoimmune disease, inflammation and even brain function.

In this pioneering book, Claire Pearson and Jethro Johnson, two world-leading researchers, delve into the latest scientific findings. In it, you'll discover shocking new insights into how our microbiome might be used to treat cancer, and why a lack of microbiome diversity could be linked to Parkinson's and Alzheimer's.

So forget the false promises and miracle products. This book is a guide to the evidence, the open questions, and the practical steps that actually matter. Inside you is an entire ecosystem. Understanding it could change your health forever.