Although National Childhood Obesity Awareness Month, a designation intended to raise awareness about the problem of obesity and show people how they can take steps toward a solution, has passed, we want to remind everyone that the need to raise awareness has not. In the last generation, childhood obesity has increased more than fourfold in the United States. More than 23 million children and teenagers are obese or overweight, a statistic that health and medical experts consider an epidemic. And while the national childhood obesity rate has recently started to level off, and some cities and...