Adults who upped their intake of sugary foods or drank sugar-sweetened drinks gained about a pound a year, a study found. Umberto Salvagnin/Flickr hide caption

itoggle caption Umberto Salvagnin/Flickr

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

itoggle caption iStockphoto.com

Many Americans aren't getting the recommended seven to nine hours per night. Franck Camhi/iStockphoto.com hide caption

itoggle caption Franck Camhi/iStockphoto.com

Doctors may recommend that obese patients use weight-loss drugs to trick their hunger pangs. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Billionaires John and Laura Arnold are betting that the country's top nutrition researchers can get to the bottom of the obesity epidemic. Courtesy of the John and Laura Arnold Foundation hide caption

itoggle caption Courtesy of the John and Laura Arnold Foundation

Customers line up for farmers market produce on a corner in Washington, D.C., where people eat more fruits and veggies than in many states. Dan Charles/NPR hide caption

itoggle caption Dan Charles/NPR

Shannon Orley, left, meets with her health coach, Kelly Heithold, right, at Providence Alaska Medical Center. Annie Feidt for NPR hide caption

itoggle caption Annie Feidt for NPR