From left: 8-year-old Celedonia, 3-year-old Gavin, Amy Spencer and Doug Brown gather around the kitchen as Doug prepares a fruit salad for dinner. Maggie Starbard/NPR hide caption

itoggle caption Maggie Starbard/NPR

The U.S. Department of Agriculture's proposed new rules for school snacks promote healthier options, like the fruits and vegetables served in this Palo Alto, Calif., cafeteria. Paul Sakuma/AP hide caption

itoggle caption Paul Sakuma/AP

Front-loading your calories may help you lose weight. Gaelle Cohen/iStockphoto.com hide caption

itoggle caption Gaelle Cohen/iStockphoto.com

Regular consumption of blueberries, such as these found at Butler's Orchard in Maryland, may prevent heart attacks in middle-aged women. Maggie Starbard/NPR hide caption

itoggle caption Maggie Starbard/NPR

Students are drinking more coffee to stay awake. iStockphoto.com hide caption

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An analysis of many studies finds a small spare tire may be associated with longer life. But skeptics say that conclusion is rubbish. iStockphoto.com hide caption

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