New research identifies differences in metabolic disease markers in healthy, obese 7-to-9-year-olds

"The amount of body fat as well as its location, particularly in the liver, appears to play a critical role in disease development," notes LSUHSC's Dr. Melinda Sothern. "The substantial variation in biomarkers we observed in these young children suggests that obesity in this age group may disrupt normal metabolism, impairing glucose tolerance and increasing the risk for Type 2 diabetes later in life."

The researchers studied 123 children, ages 7-9, recruited from southeast Louisiana. By BMI z-score thresholds, 23.6% of the children were obese. Although a clear definition for the metabolic syndrome in children and adolescents has not yet been established, by one set of proposed criteria, 16% of participants met the definition, and 8% met the criteria by another definition.

"Our data confirm that healthy obese young children may already be predisposed to the development of metabolic disease as has been demonstrated in adult populations," said Dr. Sothern. "Our findings highlight the importance of interventions to prevent and manage obesity very early in life and suggest this is a possible means of reducing metabolic disease risk and combating the increasing prevalence of Type 2 diabetes."

Over the past 30 years, the prevalence of obesity has increased considerably. Although a recent national report indicates a leveling off of this trend, a significant portion of the pediatric population remains obese and at risk for developing metabolic diseases, particularly those related to carbohydrate metabolism. Some regions, especially areas with traditionally higher obesity prevalence rates, however, may not mirror national estimates.

Provided by Louisiana State University Health Sciences Center