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Insulin resistance status: predicting weight response in overweight children
Doyle M Cummings1, Sarah Henes, Kathryn M Kolasa
1Department of Family Medicine, Brody School of Medicine at East Carolina University, 600 Moye Blvd, Greenville, NC 27834, USA. cummingsd@ecu.edu
Archives of Pediatrics & Adolescent Medicine
|August 6, 2008
Summary
Reducing sugary drinks in overweight children improved BMI z scores, especially in those with higher baseline insulin resistance. This dietary change is linked to better metabolic health outcomes.
Area of Science:
- Pediatric Endocrinology
- Nutritional Science
- Public Health
Background:
- Overweight children often exhibit insulin resistance, a precursor to type 2 diabetes.
- Dietary habits, particularly high intake of sweetened beverages, contribute significantly to childhood obesity.
- Early intervention is crucial for managing metabolic risks in pediatric populations.
Purpose of the Study:
- To examine the association between insulin resistance and changes in Body Mass Index (BMI) z score.
- To evaluate the impact of dietary modification, specifically reducing sweetened beverage consumption, on overweight children.
- To determine if baseline insulin resistance predicts response to dietary intervention.
Main Methods:
- Retrospective cohort study involving 45 overweight children (aged ≤18 years).
- Dietary intervention focused on caloric reduction and limiting sweetened beverages, guided by a dietitian.
- Insulin resistance assessed using homeostatic model assessment (HOMA); BMI z score changes tracked over 12 weeks.
Main Results:
- A significant positive correlation (r=0.42, P<.01) was observed between baseline insulin resistance and the change in BMI z score following reduced sweetened beverage intake.
- Children with decreased or unchanged BMI z scores had significantly higher baseline insulin resistance (HOMA: 6.2±4.2) compared to those with increased BMI z scores (HOMA: 2.6±2.0, P<.01).
- Linear regression confirmed HOMA as a significant predictor of BMI z score change, independent of age, race, and sex.
Conclusions:
- A significant relationship exists between insulin resistance and BMI z score changes in overweight children undergoing dietary modification.
- Dietitian-mediated interventions focusing on reducing sweetened beverage consumption are effective in managing BMI in overweight children.
- Assessing insulin resistance may help tailor dietary recommendations for overweight children to improve metabolic outcomes.
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