芬兰一项新研究发现,失眠具有一定的遗传性。芬兰职业健康研究所、赫尔辛基大学和芬兰国家健康与福利研究所的研究人员,跟踪调查了1.25万对芬兰成年双胞胎在1990年至2009年期间的健康状况,其中20%的人遭受到入睡困难、夜间觉醒等症状的困扰。调查发现,与异卵双胞胎 A new study in Finland found that insomnia has some heredity. Researchers at the Finnish Institute of Occupational Health, the University of Helsinki and the Finnish Institute of Health and Welfare followed up on the health status of 12,500 Finnish twins between 1990 and 2009, of whom 20% suffered from difficulty falling asleep, Night awakening and other symptoms of disturbance. The survey found that fraternal twins