Obesity may be declining slightly among preschoolers in low-income families, researchers looking at federal data said.
Obesity and extreme obesity in childhood have been associated with other risk factors for heart disease and with premature death. And the condition is likely to continue into adulthood, Dr. Liping Pan of the federal Centers for Disease Control and Prevention wrote.
The authors analyzed data from the Pediatric Nutrition Surveillance System, which includes almost half of the children eligible for federal maternal and child health and nutrition programs. They wrote about the results in the Journal of the American Medical Assn. in a research letter published on Christmas Day.
The more than 26 million children whose data was included in the study were ages 2 to 4. The prevalence of obesity increased from 13% in 1998 to 15.2% in 2003, but declined to 14.9% in 2010; extreme obesity went from 1.75% in 1998 to 2.2% in 2003, to 2.07% in 2010.