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Is it dangerous to sleep with your smartphone? 身边放着手机睡觉有危害吗？ 来自南卫理工会大学化学系助教Brian Zoltowski的回答： FOR ELECTRONIC DEVICES LIKE LAPTOPS, phones, anything with a LED or LCD display, the problem is that they produce a large amount of artificial blue light. Our natural cue to what time of day it is, primarily to know when morning is, is blue light. By exposing ourselves to large amounts of blue light late at night, we are giving our bodies a cue that it’s time actually to wake up instead of go to sleep. This can lead to defects in our circadian rhythm, and it’s been shown that when we have our biological clock out of phase with the natural day-night cycle outside, that can lead to increases in the rates of diabetes, cancer, heart disease, and even depression. 对于任何像笔记本和手机这样带有LED或LCD屏幕的电子设备来说，问题就在于它们会发出大量人造蓝光。我们自身对一天中各时间段的感知就依靠蓝光，其中主要是知道什么时候是早上。深夜我们还把自己暴露在大量蓝光下，就是在提示身体该起床了，而不是该睡觉了。这会导致我们昼夜规律的混乱，而且有研究表明生物钟与外界自然的昼夜循环不一致时，糖尿病、癌症、心脏病、甚至抑郁的发病率都会上升。 来自伦斯勒理工学院教授Mariana Figueiro的回答： | 
