Which movies can you buy to help you sleep better?
A new research study has found that the more often you use a screen, the more likely you are to sleep better.
The research, published in the Journal of Sleep Medicine, analysed data from over 3,000 participants across the US.
Participants were asked to report their nightly sleep habits on a 10-point scale ranging from very light to very heavy, and then were asked about how much screen time they were getting during the day.
They were also asked to rate their sleep quality over the previous night and over the last 24 hours.
It was found that light screen use was linked to significantly higher scores on the scale and more positive mood.
The researchers also found that screen use during the night had an impact on overall sleep quality.
“Our study provides a strong empirical support for the hypothesis that light-screen use in the evening can help prevent or treat daytime sleepiness, and is an important public health intervention,” the authors wrote.
They added that they found no evidence that heavy screen use had a significant impact on sleep quality or quality of life.
“We found that using screens in the evenings was associated with significant increases in overall sleepiness and a reduction in quality of sleep,” said lead author Dr David Whelan, from the University of California, San Diego, in a press release.
“This finding is consistent with previous research suggesting that lightscreen use may be associated with a decrease in daytime sleep efficiency.”
He added: “The combination of increased light exposure during the evening and improved sleep quality during the daytime may help us achieve our goals of improving sleep in a safe, natural, and inexpensive manner.”
The study also found a link between light-screens and lower body temperature and reduced cortisol levels, which can be a concern for people who have chronic sleep disorders.
Sleep studies have also shown that exposure to light may affect mood, and it is unclear whether light exposure is a reliable predictor of mood changes.
However, the researchers note that there is a lack of evidence on whether these effects are specific to light screens, or whether light screen exposure also has a negative impact on other aspects of mood.
This article originally appeared on The Conversation.