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People who sleep with the lights on are more at risk of depression because the brightness can cause poor sleep quality and disrupt the "biological clock," a multiyear study showed. 一项多年的研究显示，睡觉开着灯的人更容易患抑郁症，因为亮度会使睡眠质量变差，扰乱“生物钟”。 A research team of the Nara Medical University said such disturbances in body rhythm can lead to mental disorders, such as depression. 奈良医科大学的一个研究团队称，这种对身体节奏的干扰可导致精神障碍，例如抑郁症。 The team conducted the study on 863 men and women aged 60 or older from areas that included Asuka and Kashiba in Nara Prefecture. 这个团队对863名年龄在60岁及以上、来自包括飞鸟和香芝在内的奈良县各个地区的男男女女进行了研究。 | 
