There's some good news in the battle of the bulge. It appears more people are buying lower-calorie foods. Hank Cardello from The Obesity Solutions Initiative talks about the trend. Click here to watch the interview.
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The P4 laboratory, on the campus of the Wuhan Institute of Virology, in Wuhan, in China's central Hubei province. (Hector Retamal/AFP via Getty Images)