The story

Growing up, Heather Davis wasn't the kind of kid people would have called fat or even chubby.

Like many children, Heather studied hard, did her homework and played sports after school. During elementary school, she remembers being thin -- but things started to change as she approached adolescence.

"My bad eating habits began during my 'latchkey kid' years," says Davis. "In high school and middle school, I played sports, but with a diet of Doritos and soda for lunch ... large family dinners ... I became overweight." Read full article »

Matt Sloane contributed to this report.

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