Pediatric Obesity and Metabolic Syndrome: From Pathogenesis to Prevention and Therapeutic Management

Abstract

Childhood obesity is a significant global public health threat and is a result of a multifactorial issue, including genetic, environmental, behavioral, and socioeconomic factors. The key factors contributing to the rising rates of childhood obesity include consuming more calories than needed, eating unhealthy foods, leading sedentary lifestyles, and physical inactivity. In addition to the excess adiposity, pediatric obesity has been linked to many metabolic and non-metabolic complications that greatly elevate the risk of a child having chronic morbidity and mortality in the future. Obesity is associated with a dysfunction of adipose tissue and chronic low-grade inflammation, which are key mechanisms in the development of insulin resistance and the metabolic syndrome, which in turn underlie the pathogenesis of type 2 diabetes mellitus, dyslipidemia, hypertension, non-alcoholic fatty liver disease (NAFLD), and polycystic ovary syndrome (PCOS). In addition, obesity has negative effects on cardiovascular health, leading to structural and functional changes of the heart that can lead to cardiomyopathy and early cardiovascular disease. Pediatric obesity is a complex issue that needs a multi-disciplinary, family-focused approach to management. There is current evidence to recommend dietary interventions that will improve diet quality and reduce the intake of energy-dense foods, and regular physical activity to improve metabolic health and body composition. Behavioral support strategies and decreased screen time and other sedentary activities further enhance treatment outcomes. While there has been great progress in the knowledge of the pathophysiology and management of pediatric obesity, there are key research gaps. There is limited evidence on the effectiveness of behavioral interventions in the long term, on the sustainability of weight loss, and on the effect of large-scale public health policies. Future studies should focus on creating culturally relevant and culturally responsive interventions and assessing their effectiveness for long-term prevention and management of the increasing morbidity and mortality associated with pediatric obesity.