Research has long established that for kids, more “screen time” is linked to higher rates of obesity. A new study (American Journal of Preventive Medicine) goes further. It finds not only that kids with a TV in their bedroom tend to watch more TV, which in itself should make them fatter, but also: Compared to television watched in, say, a family room, the screen time a kid logs in his or her bedroom is linked, hour-for-hour, to more belly fat, higher triglycerides and overall greater risk of developing heart disease and diabetes.Take two kids with roughly the same diet and the same level of physical activity: The study published Tuesday found that the one with a TV in his bedroom (and boys are more likely to have them than girls) will have more cardiometabolic risk factors than than the one who has to watch TV in one of his home’s common rooms. (Source)