'Want to help prevent your kids from becoming overweight or obese? Then turn the TV off.

Obesity means having too much body fat. Obesity increases the risk of health problems. Rates of childhood overweight and obesity have tripled since the 1980s. Our children face an unprecedented risk.

A new childhood obesity study at Georgia Southern University shows that parents are less likely to recognize childhood obesity in their kids. The study found more than three-quarters of parents incorrectly perceived their overweight children as "about the right weight."