Lots of TV and Web harms kids' health
Dec 2, 2008
Spending a lot of time watching TV, playing video games and surfing the Web makes children more prone to a range of health problems including obesity and smoking, U.S. researchers said on Tuesday.
U.S. National Institutes of Health, Yale University and the California Pacific Medical Center experts analyzed 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 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 in the report released by the advocacy group Common Sense Media, said in a telephone interview.
...One study cited in the report found that children who spent more than eight hours watching TV per week at age 3 were more likely to be obese at 7. And research shows that many U.S. children, even toddlers, watch far more.
Dr. Cary Gross of Yale University.. said TV and other media content can have a profound impact on children's attitudes and beliefs, most notably among teens.
He cited a U.S. study by the RAND research organization published in November that showed that adolescents who watched more programing with sexual themes had a higher risk of becoming pregnant or causing a pregnancy.
Thirteen of 14 studies that evaluated sexual behavior found an association between media exposure and earlier initiation of sexual behavior, the researchers said.