In the first of the series, the doctors see some jaw-dropping sights, including Glenn, whose stomach oedema literally touches the floor, and successful slimmer Julia, whose new slim frame is draped in excess skin.
The second programme meets a husband and wife couple with a combined weight of 52 stone, and a 21-year-old Mum whose life is maligned by her enormous J cup breasts.
Dr Pixie comes face to face with three huge hernias, and Dr Christian meets Malissa Jones, who made headlines in 2008, for being the world's first teenager to undergo a gastric band operation.
The doctors deal with the impact obesity has on fertility, the largest man boobs Dr Pixie has ever seen, and excess hair caused by polycystic ovaries.
The doctors learn how obesity can ruins over weight people's sex lives.
The doctors attempt to lift the underbelly on fat this week. Christian talks to a woman whose excessive eating has left her with a massive growth on her leg which weighs the same as a small child. Dawn talks to a man who despite losing half of his body weight, has surplus skin that it slaps against his body when he's working out at the gym.
The team attempt to deal with the nation's toilet troubles to learn the secret strain on our plus size population. Dawn tries to helpsa type 2 diabetic whose diarrhoea issues are putting strain on every organ in his body. Christian refers a man with high blood pressure for a pioneering treatment to try and and reduce his waistline and help with his toilet malfunctions.
The doctors meet with some patients with food phobias and calorie addictions, as well as those who are very obese.
Dr Christian continues the story of Patience, a woman whose excessive eating left her with a growth on her leg the weight of a small child.