Calorie counts like the one on this McDonald's drive-thru in New York are intended to help people make healthier choices. But researchers say they're often too confusing. Ed Ou/AP hide caption

toggle caption Ed Ou/AP

An employee packs a customer's takeout order at a Panda Express restaurant in Los Angeles. Fred Prouser/Reuters /Landov hide caption

toggle caption Fred Prouser/Reuters /Landov

Signs for "Bypass Burgers" and "Flatliner Fries" are seen in the window of the Heart Attack Grill in Las Vegas. A man who suffered a heart attack in the restaurant was wheeled out on a stretcher Saturday. Julie Jacobson/AP hide caption

toggle caption Julie Jacobson/AP

McDonald's Facebook page on July 27. Courtesy of McDonald's via Facebook hide caption

toggle caption Courtesy of McDonald's via Facebook

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