With candy and popcorn getting star billing in movie theater lobbies, our mouths start watering at the first preview. The problem: Jumbo "movie sizes" of candy can run bigger than a star's ego—and the scary stats of buttered popcorn belong in a horror flick. But summer blockbusters don't have to bust your diet. To sate your appetite for romance, adventure—and, yes, Junior Mints—try these "flick picks" from Dr. Madelyn Fernstrom, the Today show's diet and nutrition editor.

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