Change in obesity-related metabolic abnormalities associated with body mass index improvement through life-style...

Area of Science:

• Pediatric Endocrinology
• Obesity Research
• Metabolic Health

Background:

• Obesity in children is linked to metabolic complications.
• The precise reduction in Body Mass Index standard deviation score (BMI-SDS) needed to improve metabolic health markers is not well-established.
• Clinical guidelines for pediatric weight management require evidence on the efficacy of BMI-SDS changes.

Purpose of the Study:

• To determine the change in BMI-SDS associated with improvements in inflammation, liver function, and insulin resistance in obese children.
• To inform clinical guidelines for pediatric weight management interventions.
• To assess the efficacy of future clinical trials by establishing these associations.

Main Methods:

• A systematic review and meta-regression analysis of 68 identified articles.
• Inclusion criteria: studies on obese children undergoing lifestyle interventions, reporting BMI-SDS and metabolic markers (glucose, HOMA-IR, ALT, CRP, IL-6).
• Meta-regressions analyzed the relationship between BMI-SDS change and changes in metabolic markers.

Main Results:

• Greater mean reductions in HOMA-IR, Glucose, ALT, and CRP were observed with greater mean BMI-SDS loss.
• Statistically significant trends were found for HOMA-IR (P = .003) and CRP (P = .021).
• No minimum BMI-SDS reduction threshold was identified to guarantee improvements in these metabolic outcomes.

Conclusions:

• While greater BMI-SDS reduction is associated with improved metabolic health markers like HOMA-IR and CRP, a specific target reduction is not yet defined.
• Current evidence does not allow for the recommendation of a definitive BMI-SDS reduction value for metabolic health improvement in pediatric obesity.
• Future research should consider reporting additional adiposity indices to better reflect changes during weight management interventions.