In a detailed look at nearly 30 years of research on how television, music, movies, and other media affect the lives of children and adolescents, a new study released Dec. 2 found an array of negative health effects linked to greater use, reports the Washington Post. The report found strong connections between media exposure and problems of childhood obesity and tobacco use. Nearly as strong was the link to early sexual behavior.
Researchers from the National Institutes of Health and Yale University said they were surprised that so many studies pointed in the same direction. In all, 173 research efforts, going back to 1980, were analyzed, rated, and brought together in what the researchers said was the first comprehensive view of the topic. About 80 percent of the studies showed a link between a negative health outcome and either media hours or content. "We need to factor that in as we consider our social policies and as parents think about how they raise their kids," said lead researcher Ezekiel J. Emanuel, director of the Department of Bioethics at the National Institutes of Health, which took on the project with the nonprofit organization Common Sense Media. "We tend not to think of this as a health issue, and it is a health issue." The average modern child spends nearly 45 hours a week with television, movies, magazines, music, the Internet, cell phones, and video games, the study reported. By comparison, children spend 17 hours a week with their parents on average and 30 hours a week in school. "Our kids are sponges, and we really need to remember they learn from their environment," said coauthor Cary P. Gross, professor at Yale School of Medicine. He said researchers found it notable how much content mattered; it was not only the sheer number of hours of screen time. Children "pick up character traits and behaviors" from those they watch or hear, he said…

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