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近年来美国成人的吸烟率持续降低，吸烟的危害也在逐渐远离人们的生活。然而取而代之的五大健康杀手，危害一点也不比吸烟少，而且这些健康杀手就在你我的身边。 Loneliness 孤独 The growth of social media and waning in-person contact has led Former Surgeon General Vivek Murthy to label loneliness a worldwide epidemic. And it could be lethal. 曾任卫生局局长的维维克•默西认为，社交媒体的增长和面对面接触的减少让孤独成为了世界范围的流行病。而孤独可以是致命的。 Julianne Holt-Lunstad, a professor of psychology at Brigham Young University, has found in her research that loneliness reduces people's life spans by the equivalent of smoking 15 cigarettes a day. 杨百翰大学的心理学教授朱丽安娜•霍尔特-伦斯塔德在她的研究中发现，孤独会缩短人的寿命，其危害相当于每天抽15根烟。 Sitting 久坐 Sitting all day increases risk for a raft of different cancers, a 2017 study found. 2017年的一项研究发现，终日久坐会增加患多种癌症的风险。 Researchers included in their meta-analyses data from four million people involving how often they sat to watch TV, do work, and commute. 研究人员在做荟萃分析时采集了400万人坐下来看电视、工作和通勤的时长数据。 | 
