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Health On Your Smartphone: A Doctor Weighs In

caption: Fit Bit uses your smart phone to track the steps a person takes in a day.
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Fit Bit uses your smart phone to track the steps a person takes in a day.
Flickr Photo/Bryan Zug (CC-BY-NC-ND)

Ross Reynolds asks Dr. David Bates, physician at the Harvard Medical School and Brigham and Women's Hospital, how consumers can navigate the exploding marketplace of mobile health apps.

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