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The contents of a box of some of the new foods containing caffeine collected by the Center for Science in the Public Interest.
Karen Castillo Farfán/NPR
December 17, 2012 Are we getting "Jack'd"? A surge in new caffeine-containing foods leads to new questions about just how much caffeine we're getting in our daily lives. Some advocates are calling for labeling, and they raise concerns about children's and teens' consumption.
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