Harvard Health Letter

Cafeteria strategies that may improve your diet

News briefs Red light, green light we all know what those mean. And when Harvard researchers added traffic-light symbols to packages and menus in a hospital cafeteria, they found that diners bought healthier foods with fewer calories. The findings were published online July 10, 2019, by JAMA Network Open. Scientists first tracked the cafeteria purchases of hospital employees for a few months. Then they labeled foods with symbols indicating if a food was healthy…

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