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Home Science & Environment Medical Research

Excessive screen time raises heart disease risk: Study

August 9, 2025
in Medical Research
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Children who spend too much time in front of screens, whether phones or TVs, have an increased risk of heart and metabolic disease, according to a Danish study published Wednesday.

The study tracked the screen consumption and sleep habits of more than 1,000 10-year and 18-year-olds, with researchers examining the relationship between screen time and cardiometabolic risk factors.

“Children and young adults who spend excessive hours glued to screens and electronic devices may have higher risks for cardiometabolic diseases, such as high blood pressure, high cholesterol and insulin resistance,” said the study published in the Journal of the American Heart Association.

Subsequently they face a higher risk of developing cardiovascular diseases or diabetes, the researchers found.

The analysis revealed that each additional hour of daily screen time increases the risk of disease.

“This means a child with three extra hours of screen time a day would have roughly a quarter to half a standard-deviation higher risk than their peers,” lead author David Horner, a researcher at the University of Copenhagen in Denmark, said in a statement.

“Multiply that across a whole population of children, and you’re looking at a meaningful shift in early cardiometabolic risk that could carry into adulthood,” Horner added.

Researchers are divided on the potential harmful effects of screens on children and adolescents, but the majority agree that younger populations are more at risk compared to adults.

More information:
Screen Time Is Associated With Cardiometabolic and Cardiovascular Disease Risk in Childhood and Adolescence, Journal of the American Heart Association (2025). DOI: 10.1161/JAHA.125.041486

© 2025 AFP

Citation:
Excessive screen time raises heart disease risk: Study (2025, August 9)
retrieved 9 August 2025
from https://medicalxpress.com/news/2025-08-excessive-screen-heart-disease.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.




screen time
Credit: Kampus Production from Pexels

Children who spend too much time in front of screens, whether phones or TVs, have an increased risk of heart and metabolic disease, according to a Danish study published Wednesday.

The study tracked the screen consumption and sleep habits of more than 1,000 10-year and 18-year-olds, with researchers examining the relationship between screen time and cardiometabolic risk factors.

“Children and young adults who spend excessive hours glued to screens and electronic devices may have higher risks for cardiometabolic diseases, such as high blood pressure, high cholesterol and insulin resistance,” said the study published in the Journal of the American Heart Association.

Subsequently they face a higher risk of developing cardiovascular diseases or diabetes, the researchers found.

The analysis revealed that each additional hour of daily screen time increases the risk of disease.

“This means a child with three extra hours of screen time a day would have roughly a quarter to half a standard-deviation higher risk than their peers,” lead author David Horner, a researcher at the University of Copenhagen in Denmark, said in a statement.

“Multiply that across a whole population of children, and you’re looking at a meaningful shift in early cardiometabolic risk that could carry into adulthood,” Horner added.

Researchers are divided on the potential harmful effects of screens on children and adolescents, but the majority agree that younger populations are more at risk compared to adults.

More information:
Screen Time Is Associated With Cardiometabolic and Cardiovascular Disease Risk in Childhood and Adolescence, Journal of the American Heart Association (2025). DOI: 10.1161/JAHA.125.041486

© 2025 AFP

Citation:
Excessive screen time raises heart disease risk: Study (2025, August 9)
retrieved 9 August 2025
from https://medicalxpress.com/news/2025-08-excessive-screen-heart-disease.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no
part may be reproduced without the written permission. The content is provided for information purposes only.



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