Americans aged 2 to 19 need to reduce their calorie intake by an average of 64 calories per day to meet the HHS goal of reducing the childhood-obesity rate to 14.6% by 2020, a study found. Without such an average calorie reduction, the obesity rate will be 20%, compared with the current rate of 16.9%, researchers said. The findings appear in the American Journal of Preventive Medicine.

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