Ian Sample is joined by James Kinross, colorectal surgeon and author of the book Dark Matter: The New Science of the Microbiome, to answer all your questions about gut health. In episode one, James explains how the gut microbiome gets set up, how it impacts our early development, and the effect antibiotics can have on our microbes. Help support our independent journalism at <a href="https://www.theguardian.com/sciencepod">theguardian.com/sciencepod</a>
