Teenagers who spend more than 14 hours a week on the internet had elevated blood pressure and were overweight compared to light internet users.
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"Using the internet is part of our daily life but it should not consume us," said study lead author Andrea Cassidy-Bushrow from Henry Ford Hospital in Detroit, US.
"In our study, teens considered heavy internet users were on the internet an average of 25 hours a week," Cassidy-Bushrow pointed out.
Researchers analyzed data compiled from 335 teenagers ages 14-17 enrolled in the study.
Their blood pressure reading taken during a physical exam.
Participants also completed a 55-question survey of their internet use during the week leading up to their physical exam.
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Of 134 teenagers described by researchers as heavy internet users, 26 had elevated blood pressure.
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"It is important that young people take regular breaks from their computer or smartphone, and engage in some form of physical activity," Cassidy-Bushrow said
"I recommend to parents they limit their children's' time at home on the internet. I think two hours a day, five days a week is good rule of thumb," she suggested.
The study was published in the Journal of School Nursing.
Source-IANS