Supersize vs Superskinny
Julie vs Zoe (6x3)
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Forty-two- year-old super snacker Julie Menzies swaps diets with 24-year-old fussy eater Zoe Hughes-Blinston in an emotional encounter.
Dr Christian discovers how the funeral parlour in America's fattest town copes with bigger and bigger bodies.
And journalist Emma Woolf investigates the little known world of male eating disorders.