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TV And Videogame Addiction Spells Trouble For Teens
Spending lot of time watching TV, playing video games or surfing the web makes them more prone to a range of health problems including obesity and smoking.
US National Institutes of Health, Yale University and the California Pacific Medical Centre experts analysed 173 studies done since 1980 in one of the most comprehensive assessments to date on how exposure to media sources impacts the physical health of children and adolescents.
The studies, most conducted in the US, largely focused on television, but some looked at video games, films, music, and computer and internet use.
Three quarters of them found that increased media viewing was associated with negative health outcomes.
The studies offered strong evidence that children who get more media exposure are more likely to become obese, start smoking and begin earlier sexual activity than those who spend less time in front of a screen, the researchers said.
Studies also indicated more media exposure also was linked to drug and alcohol use and poorer school performance, while the evidence was less clear about an association with attention deficit hyperactivity disorder, they added.
"I think we were pretty surprised by how overwhelming the number of studies was that showed this negative health impact," NIH bioethicist Dr. Ezekiel Emanuel, one of the researchers said.
"The fact that it was probably more a matter of quantity than actual content is also a concern. We have a media-saturated life right now in the 21st century. And reducing the number of hours of exposure is going to be a big issue."
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