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1、,全文結(jié)束！再見,o study whether experiences during teen years would influence adult health.So they followed 171 teens, starting when the kids were just 13. They interviewed each one every year for five years，and also spoke to these teens closest friends，who provided additional information about the quality

2、 of their friendships.The same 171 people were interviewed again at ages 25, 26 and 27. This time, the questions surveyed each persons overall health. When the researchers analyzed the data, they found a strong connection between a teens behavior and adult health. Teens who had close friends grew up

3、 to be the healthier adults. Whether teens held back their feelings or expressed them to close friends also influenced later health. Those who held back their feelings were more likely to be sick as adults. The connection held up even after the scientists accounted for other possible influences on h

4、ealth.Weight，family income and drug use were all examined. So were mental health issues，such as anxiety and depression. And in these people，such other factors did not explain adult health as well as teen friendships did.Getting along with the crowd may have benefits, says Allen, but there are also drawbacks. Teens who are more independent tend to do better at school and,