Secrets of the microbiome: the gut

The trillions of microbes living on and inside the human body are
an important part of who we are, from mediating all of our
interactions with the environment to determining our cancer risk
and influencing who we fall for. And scientists are only just
beginning to decipher the species of bugs we share our lives with,
and how they shape us. In the first of a Science Weekly three-part
mini-series, Ian Sample speaks to colorectal surgeon and
researcher, James Kinross, about the miraculous world of our gut
microbiome, how modern life is impacting it, and what we can do to
look after it. Help support our independent journalism at
theguardian.com/sciencepod