It has been claimed that looking at screens before bedtime can make a difference in sleep quality.
The World Health Organisation (WHO) says that sitting and looking at screens for long periods of time is not good for our health. Examples of these screen activities include watching TV or videos, playing computer games, etc.
One systematic review of 23 studies suggested that excessive use of digital screens is linked with reduced sleep quality and duration, although many of the studies were not of high quality.
Another systematic reviewof 42 studies found that using digital media at bedtime or during the night was associated with poor sleep outcomes in people aged 16-25.
Things to Remember
If one study shows something, it does not mean that is the final answer.
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