Our gastrointestinal system contains more than 70% of the body’s immune cells and can house more microbial cells than there are human cells in our entire body. Unravelling all that complexity is more important than ever, with conditions affecting the gut, such as Crohn’s and ulcerative colitis, on the rise. In today’s episode, we speak to Dr Kylie James who is taking a genetic deep dive – using single cell genomics – to develop more personalised approaches to preventing and treating inflammatory bowel disease.