MTV Examines Teen Weight Loss

MTV's documentary series "I Used to Be Fat" supervises teenagers' weight loss.
3:00 | 02/18/11

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{"id":12948253,"title":"MTV Examines Teen Weight Loss","duration":"3:00","description":"MTV's documentary series \"I Used to Be Fat\" supervises teenagers' weight loss.","url":"/GMA/Childhood_Obesity/video/show-documents-teens-amazing-weight-loss-12948253","section":"GMA","mediaType":"default"}