There's one barrier to overcoming childhood obesity that might be a surprise. Asthma. For more than 4 million children with uncontrolled asthma, the simple mantra of "eat less, move more" might be easier said than done.

Eating too much and exercising too little, considered the root of obesity, are not the only probable culprits. Here are some other factors that are often overlooked.

Eating too much and exercising too little, considered the root of obesity, are not the only probable culprits. Here are some other factors that are often overlooked.

* Report targets "obesogenic" environment, not individuals * Makes schools the center of the obesity fight * Consider ta...

A small but growing number of researchers believe that environmental pollutants and industrial chemicals are to blame for the obesity epidemic. This, of course, bucks the conventional wisdom that our increasing girth is simply the result of eating too much and exercising too little.