Bedtime Use of Media Devices More Than Doubles Risk of Poor Sleep in Children

A Cardiff University study has found that children using screen-based media devices at bedtime have over double the risk of inadequate sleep duration compared to children without access to such a device. Young children are too often exposed to mobile devices (MD) and most of them had their own device. The adverse effects of a early and prolonged exposure to digital technology on pre-school children has been described by several studies. Nowadays, even pre-school children are growing up in environments saturated with internet, computer and video games that strongly catch their attention.

The study which comprised a systematic review of 20 existing observational studies, involving 125,198 children, also found that sleep quality and day-time sleepiness were affected to a similar magnitude.

Dr. Ben Carter from Cardiff University School of Medicine said: “Our study is the first to consolidate results across existing research and provides further proof of the detrimental effect of media devices on both sleep duration and quality.

“Sleep is an often undervalued but important part of children’s development, with a regular lack of sleep causing a variety of health problems. With the ever-growing popularity of portable media devices, such as smartphones and tablets, the problem of poor sleep amongst children is set to get worse. Our findings suggest that an integrated approach involving parents, teachers, and healthcare professionals is necessary to improve sleep habits near bedtime.”

Currently 72 percent of children and 89 percent of adolescents have at least one device in their sleeping environment and most are used near bedtime. Such devices are thought to adversely impact sleep through a variety of ways including displacing, delaying or interrupting sleep time; psychologically stimulating the brain; and affecting circadian timing, sleep physiology and alertness.

Sleep disturbance in childhood is known to lead to adverse physical and mental health consequences. Short and long-term detrimental health outcomes include poor diet, sedative behavior, obesity, reduced immunity, stunted growth and mental health issues.

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