Dr Christian visits McAllen's mortuary, which is having to be supersized to cope with wider doorways and autopsy tables. In the feeding clinic, LJ Marley, a takeaway addict who tips the scales at 24 stone, with a 59 inch waist, swaps diets with Katie Reeve, whose childlike portions see her weigh in at a paltry 6st 11lb. LJ visits the US for some shock therapy, being forced to face up to the damage his eating habits could be doing to his body. And Emma Woolf reveals how she developed anorexia and lost half her body weight after a break-up while a student at Oxford.