Dietary patterns and emotion dysregulation in borderline personality disorder and eating disorders as a shared mechanism underlying symptom severity

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dc.abstract.enBorderline personality disorder (BPD) and eating disorders (EDs) are often comorbid and share a core feature of emotion dysregulation (EDys). While diet has been linked to mental health, its relationship with EDys and symptom severity in these groups remains understudied. This study investigated dietary intake in BPD, EDs, and their comorbidity, and examined whether EDys mediates the relationship between diet and symptom severity. Female inpatients with BPD (n = 40), ED (n = 22), and BPD with comorbid ED (BPD + ED; n = 37), along with healthy controls (HCs; n = 37) completed Food Frequency Questionnaire (FFQ-6), Emotion Dysregulation Scale (EDS), and clinical self-report measures. Dietary patterns differed between groups. Clinical groups consumed sources of omega-3 polyunsaturated fatty acids and Mediterranean diet (MD) foods less frequently than HCs. EDys fully mediated the link between dietary patterns and symptom severity in most models. The mediation was partial when omega-3 intake predicted ED severity in the ED group. Women with BPD and BPD + ED showed poorer diet quality, especially regarding omega-3 and MD-aligned foods. EDys mediated the association between low-quality diet and symptom severity, suggesting a transdiagnostic mechanism. Nutritional interventions may positively influence emotion regulation, thereby reducing the risk of developing and maintaining symptoms of BPD and EDs.
dc.affiliationWydziaƂ Psychologii w Warszawie
dc.contributor.authorKot, Emilia
dc.contributor.authorSkimina, Ewa
dc.contributor.authorPietras, Tadeusz
dc.contributor.authorGromadzka-Ostrowska, Joanna
dc.contributor.authorMokros, Ɓukasz
dc.date.access2026-01-22
dc.date.accessioned2026-02-20T09:05:24Z
dc.date.available2026-02-20T09:05:24Z
dc.date.created2026
dc.date.issued2026-01-22
dc.description.accesstimeat_publication
dc.description.issue1
dc.description.physical1-15
dc.description.sdgGoodHealthAndWellBeing
dc.description.versionfinal_published
dc.description.volume16
dc.identifier.doi10.1038/s41598-026-36068-2
dc.identifier.issn2045-2322
dc.identifier.urihttps://share.swps.edu.pl/handle/swps/2194
dc.identifier.weblinkhttps://www.nature.com/articles/s41598-026-36068-2
dc.languageen
dc.pbn.affiliationpsychologia
dc.rightsCC-BY-NC-ND
dc.rights.questionYes_rights
dc.share.articleOPEN_JOURNAL
dc.subject.enBorderline personality disorder
dc.subject.enEating disorders
dc.subject.enDiet
dc.subject.enFood frequency
dc.subject.enOmega-3 fatty acids
dc.subject.enMediterranean diet
dc.swps.sciencecloudsend
dc.titleDietary patterns and emotion dysregulation in borderline personality disorder and eating disorders as a shared mechanism underlying symptom severity
dc.title.journalScientific Reports
dc.typeJournalArticle
dspace.entity.typeArticle