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How Much Junk Food Do Teenagers Eat? <http://p.nytimes.com/email/re?location=InCMR7g4BCKC2wiZPkcVUuluk9tyzOqn&user_id=cc183a003d2c1f3d472790cd402cb1ac&email_type=eta&task_id=1442885879355477&regi_id=0>

By NICHOLAS BAKALAR



Just what percentage of calories do American teenagers get from fast food, according to the Centers for Disease Control and Prevention?





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