Just a modest reduction in daily caloric intake could have protective benefits for our hearts, new research shows. Sian Irvine/Getty Images/Dorling Kindersley hide caption
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Chris Marshall has organized pop-up Sans Bars in New York, Washington, D.C., and Anchorage, Alaska. And he has expanded into permanent spaces in Kansas City, Mo., and western Massachusetts. Julia Robinson for NPR hide caption
It turns out it's difficult to get people to adhere to the various dietary restrictions that come with participating in a fasting study. Xsandra/Getty Images hide caption
Here's a kale salad and sweet potato that did get their portraits taken in the name of medical research. Courtesy of Brandie Jefferson hide caption