Int J Obes (Lond). 2026 Aug 12. doi: 10.1038/s41366-026-02194-0. Online ahead of print. ABSTRACT BACKGROUND: High body mass index (BMI) in adolescence is associated with accelerated biological aging, which might predict the onset of obesity-related diseases before they develop. Genetic factors may shape both adolescent BMI and weight trajectories. METHODS:…

