MobileRead Forums - View Single Post - E-readers 'damage sleep and health,' doctors warn

meeera · 12-23-2014, 01:46 AM

I pulled the full paper: they were reading on an iPad for four hours before bedtime, in otherwise very dim room light. I can't find mention background colour settings, which one might think could be rather important - but note that they had the iPads on full brightness! For FOUR HOURS. A previous similar study used iPads on full brightness for two hours. (Who on earth reads on their iPad indoors in the dark with the brightness turned up to full?) They note themselves in the study limitations that the print-book 'control' group were only exposed to reflected "very dim light".

The results were a sleep onset delay of around ten minutes, and 11 minutes less REM sleep.

12-23-2014, 01:46 AM	#2
meeera Grand Sorcerer Posts: 5,829 Karma: 68407974 Join Date: Dec 2011 Location: Australia Device: Kobo Libra 2, iPadMini4, iPad4, MBP; support other Kobo/Kindles	I pulled the full paper: they were reading on an iPad for four hours before bedtime, in otherwise very dim room light. I can't find mention background colour settings, which one might think could be rather important - but note that they had the iPads on full brightness! For FOUR HOURS. A previous similar study used iPads on full brightness for two hours. (Who on earth reads on their iPad indoors in the dark with the brightness turned up to full?) They note themselves in the study limitations that the print-book 'control' group were only exposed to reflected "very dim light". The results were a sleep onset delay of around ten minutes, and 11 minutes less REM sleep.