Definition and diagnostic criteria of clinical obesity: a Lancet Diabetes & Endocrinology Commission

Lancet Commission proposing a paradigm shift: distinguishes "preclinical obesity" (excess adiposity without organ dysfunction) from "clinical obesity" (organ dysfunction due to adiposity), with explicit pediatric criteria. Reduces reliance on BMI alone, requires confirmatory measures (waist:height, body composition) plus clinical signs. Reduces over- diagnosis pressure of AAP 2023 in healthy higher-weight children. Defining document for the next decade of obesity classification.