Our gut microbiome (that's all the microorganisms - such as bacteria, viruses and fungi - living in our gut) is really important for healthy digestion. But did you know that it's also linked to our mental health? In this episode of the Big Questions Podcast we chat to neuroscientist Prof Philip Burnet from Oxford's Department of Psychiatry about how our gut is connected to our brain, and how taking prebiotic and probiotic supplements could even help in the treatment of mood and psychotic disorders.