How to eat healthily is a question that has received much attention. It is important to find an easy way to help students figure out answers. Here we used a meta-analysis–based life expectancy calculator from recent research to let students self-test and to educate students about the impact of food choices and how to make good diet decisions. This activity can also let students experience the advancing role of big data meta-analysis in nutrition research and real life. In addition, it allows students to discuss the complexity of scientific research and its limitations.
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