More and more research is pointing to children's access to food as a major influence on their nutrition and risk for obesity. School lunches are a big part of that access.

There's a strong link between inactivity and the rising obesity epidemic in the United States. Now it seems that link may be a two-way relationship.

Most groggy teens drag themselves to school by 7:30 most morning. This is a familiar sight to both parents and teachers. Everyone knows that insufficient sleep is common for teens, but few understand that it can also be the source of weight issues.

Many studies have found links between screen time and obesity. But the key may not be related to just having the TV on. What if what matters is how much a kid actually pays attention?

It would seem intuitive that the more often you eat, the more you eat. However, it doesn't always work out that way – children and teenagers included.

Being "big boned" as a kid is one thing. But having big bones doesn't mean the bones are strong and dense.

Childhood obesity has become a big problem in the US during the past three decades. Efforts have been made to improve the situation and identify problem areas in children's diets, but has this led to any progress?

Childhood obesity continues to be a growing health issue in the US and across the world. Children's risk of becoming obese may start from their earliest days on earth.

Heavier set individuals are more likely to have acid reflux. But it is unclear whether reflux medicines are enough to stop heartburn and other symptoms in the overweight and obese.

In recent decades, obesity rates among children and teens have skyrocketed, putting many young people at risk of diabetes. Research has suggested that a lack of vitamin D may play a role in this risk.