[WATCH]: Half Ton Mum

In America today an estimated 2 million people weigh more than 40 stone. Renee Williams is one of them. She's 29 and weighs 64 stone. She's been told for years that she's too heavy for a potentially lifesaving gastric bypass but now, finally, a pioneering doctor has agreed to operate. This film tells the story of America's rapidly growing super morbidly obese population, and their desperation to find someone to help

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