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Daphne Dortch, 36, of Evanston, Ill.

She is 5-5 and 271 pounds. A paralegal, she says she has struggled with her weight for much of her life but having twins pushed her over the edge: "I couldn't fit in the car." She has since been diagnosed with atrial fibrillation and sleep apnea. "I need to do this for my kids, but I also need... NBC
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