Childhood Maltreatment and Deviations From Normative Brain Structure: A Mega-Analysis of 3711 Individuals From the

Haley R Wang1, Zhen-Qi Liu2, Elena Pozzi3

  • 1Department of Psychology, University of California Los Angeles, Los Angeles, California; Semel Institute for Neuroscience and Human Behavior, University of California Los Angeles, Los Angeles, California.

Biological Psychiatry
|March 6, 2026
PubMed

Insights

Childhood maltreatment impacts brain structure differently in young adults, with significant sex-specific effects on neuroanatomy related to Major Depressive Disorder and Posttraumatic Stress Disorder risk.

Area of Science:

  • Neuroimaging
  • Developmental Psychology
  • Psychiatry

Background:

  • Childhood maltreatment (CM) is linked to Major Depressive Disorder (MDD) and Posttraumatic Stress Disorder (PTSD).
  • The specific neuroanatomical changes caused by CM in these disorders remain unclear.

Purpose of the Study:

  • To investigate the relationship between childhood maltreatment and brain morphometry across different age groups and sexes.
  • To identify transdiagnostic neuroanatomical effects of CM in individuals with or at risk for MDD and PTSD.

Main Methods:

  • Analysis of whole-brain MRI data from 3,711 participants (ENIGMA MDD and PTSD Working Groups).
  • Normative modeling to calculate deviation z-scores for subcortical volumes, cortical thickness, and surface area.
  • Stratified analysis by sex and age (pediatric, young adult, older adult) to assess CM effects.

Main Results:

  • In young adults (18-35), abuse correlated with altered thalamus, pallidum, isthmus cingulate, middle frontal, and medial orbitofrontal cortex.
  • Strongest effects in young females: abuse/neglect associated with smaller hippocampus/putamen, thinner entorhinal cortex, altered surface area in parietal/occipital regions.
  • Males showed widespread effects of abuse on cortical thickness and surface area; neglect effects were minimal.

Conclusions:

  • Childhood maltreatment has age- and sex-specific effects on brain morphometry.
  • Developmental context is crucial for understanding how adverse experiences influence neurobiological vulnerability to MDD and PTSD.
Abstract