A sample plate of the food icon MyPlate, is unveiled at the U.S. Department of Agriculture in Washington, Thursday, June 2, 2011. A new study finds that few Americans have heard of MyPlate, the government diet guide that replaced the longstanding food pyramid in 2011, and even fewer have tried to follow its advice. (AP Photo/Susan Walsh, File)
Jonel Aleccia AP Health Writer Here’s a quick quiz: What replaced the food pyramid, the government guide to healthy eating that stood for nearly 20…