Introduction: The Growing Problem of Childhood Obesity
Childhood obesity is a serious and increasingly prevalent public health issue worldwide, including the United States [1]. Its prevalence has increased significantly, reaching 20.7% among children and 22.2% among adolescents [4]. It is not merely a cosmetic flaw, but a complex medical condition associated with a range of serious cardiometabolic and psychosocial diseases, as well as a reduced overall life expectancy [1]. Understanding the causes of excess weight in children is key to effective prevention and treatment.
Multifactorial Causes of Excess Weight in Children
The causes of childhood obesity are multifactorial, representing a complex interplay of various factors [1, 4].
- Genetic predisposition. Heredity plays a significant role in the propensity for weight gain. Genetic predisposition can influence metabolism, appetite, and adipose tissue distribution [1, 4]. Research shows that a genetically determined higher body mass index (BMI) may be causally linked to the risk of developing certain diseases, such as peptic ulcer disease [7].
- Lifestyle and behavioral factors. Poor nutrition, characterized by a high intake of calories, sugar, and saturated fats, combined with insufficient physical activity and a sedentary lifestyle, is one of the main drivers of obesity development [1, 4]. Modern children often spend a lot of time in front of screens, which reduces their activity.
- Social determinants of health. The environment in which a child grows up also has a significant impact. This includes the availability of healthy food, the safety of neighborhoods for physical activity, and the socioeconomic status of the family [1, 4]. Inequality in access to resources can exacerbate the problem.
- Impact of comorbid conditions. Certain medical conditions can contribute to weight gain. For example, among children with newly diagnosed type 1 diabetes who initially had a normal weight, more than 33% developed overweight or obesity within 2.4 years. Risk factors in this case were female sex, higher glycated hemoglobin (HbA1c) levels at diagnosis, higher insulin doses, and low physical activity [2].
The Role of Family and Weight Perception
The perception of a child's weight by the child and their parents plays a critical role in readiness and behaviors aimed at weight loss [5]. A study showed that parents' accurate understanding of their child's weight is associated with the child's own accurate weight perception, which in turn influences their desire to lose weight. Accurate self-perception of weight by the child was also associated with weight-loss behavior [5]. This highlights the importance of open dialogue and awareness within the family for successful weight management.
Health Consequences of Childhood Obesity
Childhood obesity carries serious health risks, affecting virtually all body systems.
- Cardiometabolic and psychosocial risks. Obesity significantly increases the likelihood of developing conditions such as type 2 diabetes mellitus, high blood pressure, dyslipidemia (lipid metabolism disorders), and non-alcoholic fatty liver disease. In addition to physical problems, children with obesity often face psychosocial difficulties, including low self-esteem, depression, anxiety, and social stigmatization [1].
- Impact on the musculoskeletal system. Excess weight places additional stress on bones and joints, which can lead to orthopedic problems. Although the effect of obesity on bone metabolism is recognized, its specific relationship with the incidence, pattern, and treatment outcomes of long bone fractures in children requires further study [3]. Nevertheless, this is an area of heightened focus.
- Other comorbidities. Genetic predisposition to obesity is also associated with an increased risk of developing other diseases, such as peptic ulcer disease [7]. This underscores the systemic impact of obesity on the body.
Diagnosis and Weight Management Approaches
Early identification of overweight and obesity in children is crucial. Regular screening of body mass index (BMI) and comorbidities is necessary to identify patients in need of treatment [1].
The American Academy of Pediatrics (AAP) recommends immediate intensive behavioral and lifestyle treatment for children with obesity. This approach includes lifestyle changes, behavioral modifications, and mental health support [1]. Weight management in children and adolescents also includes nutritional counseling, increased physical activity, and readiness for behavioral changes [4]. In some cases, when indicated, pharmacological interventions (e.g., metformin or orlistat for comorbid complications such as type 2 diabetes) or metabolic and bariatric surgery may be used [1, 4].
Conclusion
Childhood obesity is a complex issue requiring a comprehensive approach. Understanding its multifactorial causes, from genetics to social conditions and behavioral patterns, is the first step toward effectively combating it. Early diagnosis, active family involvement, and timely intervention can significantly improve the long-term health prospects of children and adolescents.
References
- 1. Pediatric and adolescent obesity management. (Gastroenterology clinics of North America, 2023) https://pubmed.ncbi.nlm.nih.gov/37197885/
- 2. Overweight and obesity in adolescents with type 1 diabetes mellitus. (Journal of pediatric endocrinology & metabolism : JPEM, 2026) https://pubmed.ncbi.nlm.nih.gov/42473143/
- 3. Obesity and long bone fractures in children. A systematic review. (Archives of orthopaedic and trauma surgery, 2026) https://pubmed.ncbi.nlm.nih.gov/41806038/
- 4. Management of obesity in pediatric patients. (American journal of health-system pharmacy : AJHP : official journal of the American Society of Health-System Pharmacists, 2025) https://pubmed.ncbi.nlm.nih.gov/39150883/
- 5. Pathway analysis revealing influencing factors of weight loss readiness and behavior in 8-15 year-old children with overweight: a cross-sectional study. (Pediatric obesity, 2026) https://pubmed.ncbi.nlm.nih.gov/42289286/
- 6. Genetic predisposition to obesity and peptic ulcer disease: a Mendelian randomization study. (BMC medical genomics, 2022) https://pubmed.ncbi.nlm.nih.gov/36195910/
The information presented in this article is for reference purposes only and cannot replace professional medical advice. Always consult a qualified specialist for diagnosis and treatment.