New Insights into Borderline Personality Disorder and Anorexia Nervosa

Research from the University of Warsaw has provided new insights into the complex relationship between borderline personality disorder and anorexia nervosa, two mental health conditions characterized by maladaptive emotion regulation strategies. The study, published in the journal Frontiers in Neuroscience, analyzed brain imaging data and psychological assessments of females with AN, BPD, and healthy controls to identify structural brain differences and correlations between emotion dysregulation and brain region volume/thickness.

Key Takeaways:

• The study found that subjects with anorexia nervosa demonstrated higher levels of adaptive strategies and lower maladaptive strategies compared to those with borderline personality disorder, except in self-blame.
• Cortical thickness and volume measurements revealed significant structural differences between healthy controls and patients with BPD and AN, particularly in the prefrontal cortex, nucleus accumbens, hippocampus, and insula.
• The clinical groups differed from each other and from the group of healthy controls in terms of variables associated with emotion dysregulation/lability and gray matter volume/thickness in the frontal regions, cingulate cortex, insula, and basal nuclei.
• Agnieszka Pluta, Faculty of Psychology, University of Warsaw, and colleagues conducted the study as part of an ongoing research project to inform the development of targeted therapeutic interventions for emotion dysregulation in BPD and AN.
• The study highlighted the critical role of neurobiological mechanisms in addressing the underlying factors contributing to maladaptive emotion regulation in these disorders.
• The research involved 32 subjects with AN, 46 with BPD, and 41 age-matched healthy controls who underwent brain magnetic resonance imaging and validated psychological assessment tools to measure emotional lability and regulation.

Statistics:

• 32 subjects with anorexia nervosa, 46 with borderline personality disorder, and 41 age-matched healthy controls were involved in the study.
• The study revealed significant correlations between variables associated with emotion dysregulation/lability and gray matter volume/thickness in the frontal regions, cingulate cortex, insula, and basal nuclei.
• The prefrontal cortex, nucleus accumbens, hippocampus, and insula demonstrated significant structural differences between healthy controls and patients with BPD and AN.
• The study highlighted the importance of considering neurobiological mechanisms in the development of targeted therapeutic interventions for emotion dysregulation in BPD and AN.

Sources:

• Pluta, A. Interaction between emotion lability, emotion regulation and structural brain abnormalities in patients with anorexia nervosa and borderline personality disorder. Frontiers in Neuroscience, 2025;19:1545599.
• Pluta, A., et al. (2025). Findings from University of Warsaw Broaden Understanding of Borderline Personality Disorder (Interaction between emotion lability, emotion regulation and structural brain abnormalities in patients with anorexia nervosa and borderline ...). Mental Health Weekly Digest. November 3, 2025; p 169.