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Exogenous obesity — RACP Paediatrics MCQ

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EasyEndocrineExogenous obesityRACP Paediatrics

An 8-year-old boy presents with severe obesity (BMI >99th centile). His height is on the 75th centile and he is growing normally. He has a strong family history of obesity. Development is normal. What is the most likely cause?

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Correct answer: A — Exogenous obesity (simple)

The vast majority (>95%) of childhood obesity is exogenous (simple/lifestyle-related). Normal or tall stature with normal development and a positive family history supports this diagnosis. Endocrine and genetic causes of obesity are typically associated with short stature, developmental delay, or specific syndromic features.

Reference: RCH Melbourne – 2023 – Obesity CPG; RACP Paediatric Curriculum – Endocrine