Overweight kindergarteners likelier to become obese adults
A new study suggests that development of childhood obesity cases or incidence is largely established in kindergarten.
The study, by researchers from Emory's Rollins School of Public Health, showed that overweight kindergarteners were four times as likely as normal-weight children to become obese by the 8th grade.
Led by Solveig A. Cunningham, PhD, assistant professor in the Hubert Department of Global Health at Rollins School of Public Health, the team analyzed data on children who participated in an Early Childhood Longitudinal Study of the US Kindergarten Class of 1998-1999.
With appropriate survey adjustments the data sample represents all US children enrolled in kindergarten during that time (approximately 3.8 million). Cunningham and team focused their findings on the rate of incidence of obesity in overweight and normal weight children entering kindergarten.
"Although trends in the prevalence of obesity are well documented, there is surprisingly little known about new cases of childhood obesity," Cunningham said.
"Examining incidence may provide insight into the nature of the epidemic, the critically vulnerable ages, and the groups who are at greater risk for obesity," the researcher said.
Using the Centers for Disease Control and Prevention Growth Charts to calculate each child's body-mass index (BMI), the team determined cutoffs for normal weight, overweight (85th percentile BMI), and obesity (95th percentile BMI).
According to findings, over 12 percent of children enter kindergarten obese.
It found that over 14 percent of children enter kindergarten overweight and are four times more likely than normal weight children to become obese by the eighth grade.
Children who were large at birth and are overweight by kindergarten are at the highest risk of becoming obese before age 14.
Other findings determined that obesity incidence decreases with age during elementary school years and obesity incidence differs between racial, ethnic and socioeconomic groups.
(Posted on 30-01-2014)
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