Is it dangerous to sleep with your smartphone?

时间:2018-01-12 单词数:6450

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Whether it’s waiting up for a response to an unanswered text, replying to work emails long after the end of the business day, or aimlessly scrolling through Instagram, even the most disciplined among us can be found at least occasionally—if not regularly—tucked into bed with our smartphones tightly in hand or nestled under our pillows.


In a Gallup survey, 63% of respondents admitted to keeping their smartphones close by while sleeping. But aside from the generalized guilt that comes with procrastinating before bedtime, is it actually dangerous to sleep with your smartphone?


We turned to several experts in fields like chemistry, sociology, and psychologyto identify and explain the risks associated with sharing your bed with your electronic devices.


Brian Zoltowski, Ph.D.Assistant Professor, Department of Chemistry, Southern Methodist University

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.


Mariana Figueiro, Ph.D.Professor, Lighting Research Center Light and Health Program Director, Rensselaer Polytechnic Institute

来自伦斯勒理工学院照明研究中心光与健康项目主任Mariana Figueiro教授的回答:

IT DEPENDS ON THE KIND OF DEVICE and how long people are being exposed to it, but there’s clearly a potential for suppressing melatonin in the evening, which is the hormone we start producing a couple of hours prior to bedtime. Melatonin is essentially a nighttime or darkness signal, telling us it’s time to go to bed. So, if you delay the onset of that signal in the evening, by being exposed to too much light coming from those devices, you may be delaying sleep times. Then, if you have a fixed wake up time and can’t sleep in to compensate, you are experienc