Limiting blue light exposure may reduce negative symptoms after just one week

Limiting evening exposure to light-emitting screens can help improve sleep problems in teenagers, a new study has suggested.

Research from the Netherlands indicated that reducing exposure to blue light-emitting devices in the evenings could reduce fatigue, improve concentration and help with mood swings after only a week.
It found that adolescents who had more than four hours per day of screen time suffered from longer sleep-onset and wake-up times as well as more sleep loss symptoms.

Meanwhile, the effect of blue light blocking glasses and evening screen time abstinence was tested on 25 frequent users. Both measures resulted in 20-minute earlier sleep-onset and wake-up times and a reduction in reported sleep loss symptoms after one week.