carbohydrates are an important source of energy. but if you eat too many carbs, it can lead to health problems likeobesity. that issue is the focus of this week's weight of the nation conference.
a new report was released at the meeting. it estimates that by the year 2030, 42 percent of the u.s. population will be obese. that's 30 million more americans than right now. the medical costsassociate
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