The Mediterranean-like DASH and the plant-centric Ornish eating plan topped this year's rankings of diets by a panel assembled by U.S. News & World Report. Gillian Blease/Getty Images/Ikon Images hide caption

itoggle caption Gillian Blease/Getty Images/Ikon Images

After a hard day of bruising battle, ancient gladiators reached for a post-workout drink, according to an ancient account. New research backs that up. Stefano Bianchetti/Corbis hide caption

itoggle caption Stefano Bianchetti/Corbis

A new study linking animal protein-rich diets to increased mortality in middle age adds fuel to the controversy over how much protein — and from what sources — is ideal for health. One thing that seems pretty clear: It doesn't hurt to go heavy on the greens. iStockphoto hide caption

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Government workers exercise at their office in Mexico City, August 2013. To counter the obesity epidemic, the city requires all government employees to do at least 20 minutes of exercise each day. Tomas Bravo/Reuters /Landov hide caption

itoggle caption Tomas Bravo/Reuters /Landov

A crostini of smoked trout, hard-boiled egg, aioli and roe at The Red Hen in Washington, D.C. Owner/Chef Michael Friedman says Mediterranean cooking is simply a tweaking of basic cooking ideas. Courtesy of Brian Oh hide caption

itoggle caption Courtesy of Brian Oh

People following a 5-2 diet would eat lean protein and non-starchy vegetables two days a week. Heather Rousseau/NPR hide caption

itoggle caption Heather Rousseau/NPR

Posting a picture like this on the fridge might seem like good motivation for weight loss. But scientists say it might instead inspire weight gain. iStockphoto.com hide caption

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Eating low-glycemic foods, or foods that take longer to digest, may help you feel fuller for a longer period of time. Robyn Mackenzie/iStockphoto.com hide caption

itoggle caption Robyn Mackenzie/iStockphoto.com