
Moderators: Essie73, NadjaNadja, Muiz, Telpeva, ynskek, Ladybird, Polly
Citaat:A team from Harvard Medical School compared reading paper books and light-emitting e-readers before sleep.
They found it took longer to nod off with a back-lit e-reader, which led to poorer quality sleep and being more tired the next morning.
Original Kindle readers do not emit light so should be fine, say experts.
Citaat:The use of light-emitting electronic devices for reading, communication, and entertainment has greatly increased recently. We found that the use of these devices before bedtime prolongs the time it takes to fall asleep, delays the circadian clock, suppresses levels of the sleep-promoting hormone melatonin, reduces the amount and delays the timing of REM sleep, and reduces alertness the following morning.