How can you be addicted to a behaviour? What happens when you remove the chemical hooks of drugs and alcohol? Darren attempts to answer these questions by going back to where it all started for him: food. He meets Annemarie, who despite beating addictions to drugs and alcohol still struggles with food, and learns that for many, food is simply another way of coping with trauma. But in a world where fast food is big business, it can be hard to avoid. Darren meets food scientist Dr David Gally to find out exactly why the drive-thru and the chocolate aisle are so hard to resist. In Livingston, Darren meets Aidan who is in therapy for porn addiction, and has a sit down with psychosexual therapist Pauline Brown to try to understand why sex addictions are on the increase.