Systematic Review and Meta-Analysis of Obesity Management in Adolescents

Overview

This systematic review and meta-analysis evaluated the efficacy of lifestyle modifications, pharmacological therapies, endoscopic treatments, and bariatric surgery for obesity management in individuals aged 21 years or younger. A total of 93 studies were included, with 83 undergoing quantitative analysis, highlighting bariatric surgery as the most effective intervention for BMI reduction in this population.

Background

Obesity prevalence among children and adolescents is rising globally, with approximately 20% of young people classified as obese in England and the USA. Childhood obesity significantly increases the risk of adult obesity and is associated with numerous comorbidities including type 2 diabetes, cardiovascular diseases, and psychological conditions. Current treatment options include lifestyle changes, medications, endoscopic procedures, and bariatric surgery, but the optimal approach for young people remains unclear. Early intervention is critical to prevent long-term health consequences and reduce healthcare costs.

Data Highlights

Key Findings

• Obesity affects approximately 20% of adolescents aged 10 to 19 years in developed countries.
• Bariatric surgery demonstrated the greatest efficacy in reducing BMI among young people with obesity.
• Lifestyle modifications and pharmacological therapies showed variable but generally less pronounced BMI reductions compared to surgery.
• Only one randomized controlled trial assessed surgical interventions; thus, non-randomized studies were included for surgical analysis.
• High heterogeneity (I2 > 75%) was observed across studies, necessitating use of random-effects meta-analysis models.
• Methodological quality was assessed using the Cochrane Collaboration Tool, ensuring rigorous evaluation of bias and study design.

Clinical Implications

Clinicians should consider bariatric surgery as a highly effective treatment option for adolescents with severe obesity, especially when lifestyle and pharmacological interventions have limited success. Early and tailored interventions are essential to mitigate long-term health risks associated with obesity in young populations. Multidisciplinary approaches incorporating lifestyle, medical, and surgical options may optimize outcomes.

Conclusion

This comprehensive review underscores bariatric surgery as the most effective intervention for BMI reduction in young people with obesity, while highlighting the need for further high-quality randomized trials to better define optimal treatment strategies. Early intervention remains key to improving long-term health outcomes in this vulnerable population.

References

1. National Child Measurement Programme England 2015–2016 -- Childhood Obesity Prevalence
2. National and Nutrition Examination Survey USA -- Adolescent Obesity Statistics
3. Cochrane Collaboration Tool -- Methodological Quality Assessment
4. Higgins et al. -- Statistical Heterogeneity and Meta-Analysis Methods
5. PRISMA-P Statement -- Systematic Review Protocol Standards