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One Step To Combat Obesity: Make Stairs More Attractive

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Maria Fabrizio for NPR

What Makes Us Fat: Is It Eating Too Much Or Moving Too Little?

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We are all Russian nesting dolls: Our intestines house many bacteria, which house many viruses. These so-called bacteriophages are likely as important for our health as the bacteria they live in. Lisa Brown for NPR hide caption

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Helping employees take the time to go for a walk instead of reaching for junk food when energy flags boosts productivity, some firms find. Jamie Grill Photography/Tetra Images/Corbis hide caption

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Targeting Overweight Workers With Wellness Programs Can Backfire

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The 1990s were rife with low-fat packaged snacks, from potato chips to cookies. Youtube and RetroJunk hide caption

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Why We Got Fatter During The Fat-Free Food Boom

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