About this programme

7/11. Dr Christian Jessen oversees a diet swap between round-the-clock snacker Emma Cain and Robert Musgrove, who can't always be bothered to eat, and in McAllen, Texas - one of America's fattest towns - he visits an after-school scheme that aims to combat childhood obesity. Emma Woolf travels to Holland to investigate online therapy in the treatment of eating disorders and meets a bulimic girl who has benefited from it.