Scientists mapped the brain circuit behind teen anxiety - and a path to catching it years earlier

A team at Boston Children's Hospital, led by Caterina Stamoulis, studied brain scans of nearly 3,500 young people from the Adolescent Brain Cognitive Development study, the largest long-term study of child brain development in the US. They found a circuit linking three brain regions - the cerebellum, the amygdala and the thalamus - was organized differently in young people with anxiety: weaker connections tracked with higher anxiety, while sturdier networks seemed to protect against it. Crucially, the differences were already measurable at ages 11 and 12, pointing to a window for earlier help. The findings, published in the journal Imaging Neuroscience, don't diagnose anyone - but they give researchers their clearest map yet of where anxiety lives in the developing brain.