Inflammation, Executive Function, and Adiposity in Children With or at Risk for Obesity: A Pilot Study

Area of Science:

• Pediatric Health
• Neuroscience
• Metabolic Disorders

Background:

• Obesity is linked to executive function (EF) deficits in adults, potentially via neuroinflammation.
• Pediatric research has not yet established a clear link between peripheral inflammation and EF in childhood obesity.
• Understanding these relationships is crucial for developing targeted interventions.

Purpose of the Study:

• To investigate associations between adiposity, peripheral inflammation, and EF in children aged 8-12 with obesity.
• To explore if inflammation mediates the relationship between adiposity and EF in this population.
• To examine variability in these factors within the pediatric obesity cohort.

Main Methods:

• Recruited 39 children (8-12 years) with BMI ≥ 50th percentile.
• Assessed performance-based EF using the NIH Toolbox Cognitive Battery.
• Measured peripheral inflammation via fasted sera and body composition using dual-energy X-ray absorptiometry (DXA).
• Employed linear regression and mediation analysis (Hayes' PROCESS Model 4).

Main Results:

• Found positive associations between adiposity and inflammation.
• Observed negative to null associations between inflammation and EF.
• Detected significant indirect effects of adiposity on EF mediated by inflammation.

Conclusions:

• Pilot data indicate greater adiposity correlates with higher inflammation, potentially impairing certain EF domains in children.
• While causality is not established, findings suggest inflammation may be a key factor linking adiposity and cognitive function.
• Further research with larger samples is needed to confirm these associations and inform interventions for pediatric obesity.