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Study links excessive screen time to obesity in preteens

By ANI | Updated: June 29, 2021 17:45 IST

Parents, take note! A new study has found that children in the United States with greater screen time usage at ages 9-10 were more likely to gain weight one year later.

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Parents, take note! A new study has found that children in the United States with greater screen time usage at ages 9-10 were more likely to gain weight one year later.

The findings of the study were published in the journal 'Pediatric Obesity'.

The study found that each additional hour spent on virtually all forms of screen time was associated with a higher body mass index (BMI) one year later. In particular, researchers found that each extra hour spent watching or streaming television, YouTube videos, video games, video chat, and texting led to a higher risk of weight gain one year later.

At the start of the study, 33.7 per cent of children were considered overweight or obese, and this increased to 35.5 per cent one year later, a proportion that is expected to rise in the late teens and early adulthood.

BMI is calculated based on height and weight. Researchers analyzed the BMI z-scores, which is relative weight adjusted for a child's age and sex, of 11,066 preteens who are part of the Adolescent Brain Cognitive Development Study, the largest long-term study of brain development in the United States.

The children answered questions about their time spent on six different screen time modalities, including television, social media, and texting.

"Screen time is often sedentary and may replace time for physical activity. Children are exposed to more food advertisements and are prone to snacking and overeating while distracted in front of screens," said lead author, Jason Nagata, MD, assistant professor of pediatrics at the University of California, San Francisco.

"A negative body image and subsequent overeating may be a result of exposure to social media and unattainable body ideals," said senior author, Kyle T. Ganson, PhD, assistant professor at the University of Toronto's Factor-Inwentash Faculty of Social Work.

"This study emphasizes the need for more research on how screen time impacts the well-being of young people now and in the future," added Ganson.

"The study was conducted prior to the COVID-19 pandemic, but its findings are especially relevant for the pandemic," noted Nagata.

"With remote learning, the cancellation of youth sports and social isolation, children have been exposed to unprecedented levels of screen time," added Nagata.

"Screen time can have important benefits such as education and socialization during the pandemic, but parents should try to mitigate risks from excessive screen time including increased sedentary time and decreased physical activity. Parents should regularly talk to their children about screen-time usage and develop a family media use plan," concluded Nagata.

( With inputs from ANI )

Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

Tags: Pediatric ObesityJason nagataSan FranciscoUnited StatesYoutubeThe statesSan francisco bayInformation technology and information technologyEuaFacebook gamingYoutube channelEngineering for research
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