Two new studies spotlight both the difficulty parents often have in keeping children away from the TV and also the potential health rewards for kids in cutting down on TV and other media, HealthDay News reported.
For example, one study found that 9-to-12-year-olds who were barred from watching R-rated movies on television also had lower risks for smoking and drinking.
Those results show that "the media is a very important part of children's lives today, and parents need to take it seriously," said the lead author of the TV-and-health study, Madeline Dalton, director of the Hood Center for Children and Families at Dartmouth Medical School in Lebanon, N.H.
The findings are published in the November issue of Pediatrics.
In the first study, researchers at the University of Pennsylvania sought to determine whether or not new TV-watching guidelines from the American Academy of Pediatrics (AAP) were being implemented in real life.
Among other things, the AAP suggests that parents limit TV time to no more than two hours a day for children over 2 years of age, and that children shouldn't have TVs in their bedrooms.
The researchers interviewed 180 parents and children about their media use. The kids were between the ages of 6 and 13 years old.
They found that most children spend at least three hours per day watching TV.
"Getting parents to be aware of how much time children are spending in front of a screen is important," said the lead author of the first study, Amy Jordan, a senior research investigator at the Annenberg Public Policy Research Center at the University of Pennsylvania. "When parents started adding it up, then they started realizing, it was probably three, four or five hours a day."
The average home in the study had four television sets, and two-thirds of the youngsters had TVs in their bedrooms, the researchers found. About half of the households also had TVs in the dining room or kitchen area.
Most parents said they did have rules for TV viewing, but few reported restricting the amount of time TV was watched.