The importance of good nutrition and exercise is well known, and parents have long worried about their children's diets and envied their high energy levels. Like so many life style habits, patterns of nutrition and exercise behaviors are typically established in early childhood. Poor diet and lack of exercise contribute to obesity, which has been…

Childhood obesity has become a major health problem. Approximately 17 percent of U.S. children six to 17 years of age are obese--that is, their sex-and-age-specific Body Mass Index (BMI) is at or above the 95th percentile. This proportion is two-and-a-half times higher than it was 25 years ago. Obesity during childhood often carries into…