A mock-up of a warning label for sodas and sugary drinks proposed in California by public health advocates. California Center for Public Health Advocacy hide caption

itoggle caption California Center for Public Health Advocacy

Beginning April 1, all sugary beverages and food of "minimal-to-no nutritional value" sold on the Navajo reservation will incur an additional 2-cent tax. April Sorrow/Flickr hide caption

itoggle caption April Sorrow/Flickr

An economist with the Rand Corporation argues that Los Angeles' fast-food ban failed because it merely blocked new construction or expansion of "stand-alone fast-food" restaurants in neighborhoods where that style of restaurant was uncommon to begin with. David McNew/Getty Images hide caption

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A woman pushes a cart at a Costco store in Hackensack, N.J., in 2013. Big-box stores are effective delivery devices for fattening foods, economists argue in a new study. Ron Antonelli/Bloomberg via Getty Images hide caption

itoggle caption Ron Antonelli/Bloomberg via Getty Images

This Chinese teenager weighs 353 pounds. At a "slimming center" in China's central Hubei province, he's exercising and undergoing acupuncture to lose weight. Color China/AP hide caption

itoggle caption Color China/AP

A recent study found obese women are more likely than other women to work physically demanding jobs, like the kind that call for hard hats. They're less likely to work in jobs that require a lot of interaction with clients and customers — jobs that, on average, make more money. iStockphoto hide caption

itoggle caption iStockphoto

The majority of voters in San Francisco and Berkeley, Calif., voted in favor of a soda tax, but the measure didn't gain the required two-thirds majority required in San Francisco. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images