GoKawiilStudy of 12,000 US teens links cortical maturation speed to later depression and anxiety
Researchers analyzed nearly 30,000 MRI scans from almost 12,000 adolescents tracked over six years to chart how the brain's outer layer, the cerebral cortex, thins as sensory regions mature before areas tied to complex thought. The preprint, posted on bioRxiv on October 11 ahead of peer review, found that the pace of this maturation sequence could forecast mental-health symptoms up to four years before they appeared.
GoKawiil's interpretation of the reporting above, not reported fact.
The findings challenge the common assumption that psychiatric disorders stem from defects in specific brain circuits, suggesting instead that disrupted timing of brain maturation—potentially rooted in prenatal genetic activity—may underlie vulnerability to conditions like depression and anxiety. Outside expert Avram Holmes called it one of the clearest pictures yet of cortical development, though he cautioned that these are population-level trends not yet precise enough to predict an individual child's mental-health trajectory.
- Nearly 30,000 MRI scans from ~12,000 US adolescents were used to map cortical thinning over six years.
- Sensory brain regions mature before regions linked to complex thought, and the pace of this sequence predicts later mental-health symptoms.
- The unreviewed preprint suggests disrupted developmental timing, not fixed circuit defects, may explain psychiatric vulnerability, though it isn't yet clinically predictive for individuals.
Source: nature.com — Kozlov, 2026-10-21
Published there as: “Teen depression and anxiety predicted by childhood brain development”
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