The University of California's Nutrition Policy Institute has proposed that MyPlate include an icon for water. UC Division of Agriculture and Natural Resources hide caption

itoggle caption UC Division of Agriculture and Natural Resources

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

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

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

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