Guts: they are the big thing in the world of medical science right now. Filled with hard- working bacteria that have long been overlooked, our gut does more than give us that satisfied feeling after a meal. British medical journalist of the moment Michael Mosley lends weight to the discussion as we learn that our gut also has the power to help us lose weight and improve our mood and autoimmune conditions. Host Jenny Brockie hears how Aussies are taking gut health into their own hands, but some of their tactics aren’t for the weak of stomach. If you are oblivious to what a faecal matter transplant is, tonight’s your chance to find out.