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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A waitress delivers a coffee and beer in Medellin, Colombia, in this 2010 file photo. Both drinks can trigger acid reflux. Raul Arboleda/AFP/Getty Images hide caption

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