这份研究在过去七年跟踪超过300,000个人，得到的结论是，在影响你健康长寿的因素里，有良好支持的交际网络的地位与你是否抽烟的地位等价。

The study tracked more than 300, 000 people over seven years and concluded that having a good support network is as influential a factor in your long-term health as whether or not you're a smoker.

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