It's estimated 16% of children 6 and older are overweight, triple the number from 1980. Some experts trace the problem to when more mothers started entering the workforce.    

"When we saw that start to happen we could track childhood obesity. there's a direct correlation," said Terry Mason of the Chicago Public Health Commissioner.     

Rather than point a finger, others are looking for a solution.    

"I would say for working moms and working dads, don't beat yourself up. Start today to figure out what you can do to give your child more opportunities to be active and eat well," said Kathryn Thomas of Robert Woods Johnson Foundation.     

Eating more meals at home may be a start. The portions kids, and adults for that matter, get in restaurants are bigger than what they get at home.   

Pre-cook and freeze meals on the weekend to heat up later and cut out soda. Teens drink more than 26-ounces of soda a day, just over 300 calories or 15% of the daily recommended amount of calories. 

Thomas tells parents to set a good example for their children and show them how to make healthy choices.