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研究显示:晚上用电子设备易造成睡眠紊乱

2017-08-05 07:03:08   新华网

美国一项新研究显示,晚上使用手机、电脑等电子设备容易造成睡眠紊乱,因为这些设备发出的蓝光会减少有助眠作用的褪黑激素的分泌。

休斯敦大学眼部光学学院研究人员让22名年龄在17至42岁之间的志愿者在两周里每天晚上照常使用电子设备,但在睡前佩戴三小时防蓝光眼镜,结果发现,他们的晚间褪黑激素水平整体上升了大约58%,上升幅度甚至超过服用褪黑激素补充剂带来的变化。志愿者感觉睡眠质量改善,入睡更快,整体睡眠时间延长。

研究人员说,最大的蓝光光源是日光,但大部分基于LED灯的设备也会发出蓝光,“人造蓝光”会激活对褪黑激素有抑制作用的内在光敏视网膜神经节细胞,从而干扰睡眠。

研究带头人、眼科专家丽萨·奥斯特林建议人们睡前少用电子设备,如果一定要用,就在设备上安装蓝光滤镜,或佩戴防蓝光眼镜。(欧飒)【新华社微特稿】

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