You want that soda bottle. But it may not be because you crave soda. It might just be that you love the idea of wrapping your fingers around its enticing shape. Ariel Zambelich/NPR hide caption

itoggle caption Ariel Zambelich/NPR

When beverage companies like Pepsi create ad campaigns with stars like Beyonce, they're trying to appeal to youth, says Jennifer Harris of the Rudd Center for Food Policy & Obesity. Walter McBride/Corbis hide caption

itoggle caption Walter McBride/Corbis

Berkeley's efforts to pass a penny-per-ounce tax on sugary drinks faced opposition with deep pockets — but it also got sizable cash infusions from some big-name donors. Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

Would you think twice about that 20-ounce soda if you were informed that it would take 5 miles of walking — or 50 minutes of running — to burn it off? Justin Sullivan/Getty Images hide caption

itoggle caption Justin Sullivan/Getty Images

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

4-MEI, a chemical created during the manufacturing of caramel color used to dye sodas brown, is under new scrutiny. iStockphoto hide caption

itoggle caption iStockphoto

At NPR's Sound Bites Cafe, all food gets coded with one of three circles: Green is reserved for the most healthful dishes; yellow flags the "good choices;" and red signals the high-calorie foods to grab "on occasion." NPR hide caption

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Goodbye, Sodas. McDonald's says it will now market and promote Happy Meals only with milk, water or juice. Bill Parrish Photography/PR Newswire/AP hide caption

itoggle caption Bill Parrish Photography/PR Newswire/AP

Appalachia has a distinct culture of sipping soda constantly throughout the day. "Here in West Virginia, you see people carrying around bottles of Mountain Dew all the time — even at a public health conference," says public health researcher Dana Singer. Jin Lee/Bloomberg via Getty Images hide caption

itoggle caption Jin Lee/Bloomberg via Getty Images
Audie Cornish for NPR

A dental researcher says he's concerned that excessive soda consumption is leading to severe erosion of teeth. iStockphoto.com hide caption

itoggle caption iStockphoto.com

Share a Coke with ... (enter name here). Darren Foreman (left), Elliott Brown (middle), teigan (top right), ☼zlady (bottom left) via Flickr hide caption

itoggle caption Darren Foreman (left), Elliott Brown (middle), teigan (top right), ☼zlady (bottom left) via Flickr

Harry Patel, an employee of Blondie's Deli and Grocery, talks on the phone while waiting for customers in New York on Monday. A new anti-smoking proposal would make New York the first city in the nation to keep tobacco products out of sight in retail stores. Mark Lennihan/AP hide caption

itoggle caption Mark Lennihan/AP

PepsiCo's product line ranges from salty chips and its sugary namesake drink to more healthful fare like hummus and yogurt. In 2010, the company announced plans to cut sugar, fat and sodium in its products to address health and nutrition concerns. Joe Raedle/Getty Images hide caption

itoggle caption Joe Raedle/Getty Images