The latest news on child obesity should be a call to action — for parents, educators, health professionals and the kids themselves.

A new study, presented Tuesday at an American Heart Association conference in New Orleans, found that children and teenagers who are obese or have high cholesterol have arteries resembling that of an average 45-year-old.

By measuring the thickness of the youths' arterial walls — considered a solid measure of heart disease risk — researchers have added fresh evidence to what is becoming increasingly clear: Obesity in children can greatly raise the chances of heart disease, heart attacks or strokes at a younger age. It may also raise the risk of children developing Type 2 diabetes.

The study will need to be corroborated to be conclusive: It measured a small sample of 70 children, ages 6 to 19. Nonetheless, it's a warning that should be heeded.

For obese children and those responsible for them, it's a call for strong proactive measures as early as possible — hoping the child will grow out of the problem won't do.

The obvious first steps are a firm commitment to a healthier diet and exercise, both in school and at home.

Parents should also carefully monitor their children's health, making sure they see the doctor regularly and receive appropriate medical treatment if needed.

After all, no child, obese or otherwise, should face the health risks of a 45-year-old.