Daytime light exposure 'can reduce impact of screens on sleep'

Scientific Developments/Breakthroughs

The impact that blue light-emitting screens can have on sleeping patterns can be partially offset by greater light exposure during the day.

This is according to a new study from Uppsala University, which assessed the impact of evening reading on a tablet computer on sleep following bright daylight exposure among 14 young and healthy students.

“Plenty of light exposure during the day can reduce the effect of blue light screens on sleep, according to a new study.“

It was found that for those who experienced bright light exposure, the evening use of a self-luminous tablet for two hours did not affect sleep among the subjects.

This is a potentially important discovery, as previous research has shown that the use of blue light-emitting devices during evening hours can interfere with human sleep cycles. Outdoor activities or light interventions in offices may potentially be used to negate this trend.

Senior author Christian Benedict, associate professor at the department of neuroscience at Uppsala University, said: "It must, however, be kept in mind that utilising electronic devices for the sake of checking your work emails or social network accounts before snoozing may lead to sleep disturbances as a result of emotional arousal."

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