Pizza is the second-highest source of calories for kids ages 2 to 18, researchers have found.
They say America's love of pizza has meant about 20 percent of youths eat pizza on any given day.
They say the food must be curbed, and made healthier.

On days they eat pizza, children and adolescents take in significantly more calories, fat and sodium than on days they don't, the new study has shown.

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Source: http://www.dailymail.co.uk/