"Early Show" co-anchor Erica Hill said, "So that's how there's this connection that they found later in life it could lead to heart issues."

"Correct," Ashton said. "We have to emphasize (that) right now, this is a future risk. But basically, when you talk about the diameter of a coronary artery or the artery supplying the heart of a child, we're talking about something the size of a strand of spaghetti. So any narrowing in a blood vessel that small can result in changes of blood pressure about the equivalent of 10 points higher. So, again, for future risk, this was a significant finding."

 

Hill noted several studies have indicated there are developmental dangers when it comes to TV viewing, as well.

 

Psychologist and "Early Show" Contributor Dr. Jennifer Hartstein added that too much TV can lead to school-related problems, such as shorter attention spans.