Pediatric obesity is a growing public health concern, yet the early neurobiological correlates of obesity risk remain underexplored. Using restriction spectrum imaging (RSI), we examined associations between adiposity and brain microstructure in a cross-sectional sample of 159 children aged 4-7 years, including 81 with attention-deficit/hyperactivity disorder (ADHD) and 78 typically developing (TD) peers. We focused on RSI-derived measures of restricted diffusion-specifically restricted…
