Adverse Childhood Experiences and Adult Mental Health Outcomes
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Importance: Exposure to adverse childhood experiences (ACEs) has consistently been associated with multiple negative mental health outcomes extending into adulthood. However, given that ACEs and psychiatric disorders cluster within families, it remains to be comprehensively assessed to what extent familial confounding contributes to associations between ACEs and clinically confirmed adult psychiatric disorders. Objective: To investigate whether associations between ACEs and adult mental health outcomes remain after adjusting for familial (genetic and environmental) confounding. Design, Setting, and Participants: This Swedish twin cohort study used a discordant twin pair design based on monozygotic (MZ) and dizygotic (DZ) twins. A total of 25 252 adult twins (aged 18-47 years) from the Swedish Twin Registry born between 1959 and 1998 were followed up from age 19 years until 2016, with a maximum follow-up time of 39 years. Data were analyzed from April 2022 to November 2023. Exposures: A total of 7 ACEs, including family violence, emotional abuse or neglect, physical neglect, physical abuse, sexual abuse, rape, and hate crime, were assessed with items from the Life Stressor Checklist-Revised in a web-based survey. Main Outcomes and Measures: Adult (ages >18 years) clinical diagnosis of psychiatric disorders (ie, depressive, anxiety, alcohol or drug misuse, or stress-related disorders) were obtained from the Swedish National Patient Register. Results: Of 25 252 twins included in the study (15 038 female [59.6%]; mean [SD] age at ACE assessment, 29.9 [8.7] years), 9751 individuals (38.6%) reported exposure to at least 1 ACE. A greater number of ACEs was associated with increased odds of any psychiatric disorder in the full cohort (odds ratio [OR] per additional ACE, 1.52; 95% CI, 1.48-1.57). The association remained but ORs per additional ACE were attenuated in DZ (1.29; 95% CI, 1.14-1.47) and MZ (1.20; 95% CI, 1.02-1.40) twin pairs. Individuals who were exposed to sexual abuse compared with those who were not exposed had increased odds of any clinically confirmed psychiatric disorder in all comparisons: full cohort (OR, 3.09; 95% CI, 2.68-3.56), DZ twin pairs (OR, 2.10; 95% CI, 1.33-3.32), and MZ twin pairs (1.80; 95% CI, 1.04-3.11). Conclusions and relevance: This study found that associations between ACEs and adult mental health outcomes remained after controlling for shared genetic and environmental factors, which was particularly evident after multiple ACEs or sexual abuse. These findings suggest that targeted interventions may be associated with reduced risks of future psychopathology.
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Exposure to ACEs is associated with a higher risk of mental health disorders and suicidal behaviors in adulthood, with a likely cumulative effect.
“Exposure to ACEs is associated with a higher risk of mental health disorders and suicidal behaviors in adulthood [6, 7], with a likely cumulative effect [8].”
From Association between adverse childhood experiences and suicidal behavior in affective disorders: A systematic review and meta-analysis (2025) · cites this paper as [7]
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Baldini, V., Gottardi, C., Di Stefano, R., Rindi, L. V., Pazzocco, G., Varallo, G., Purgato, M., De Ronchi, D., Barbui, C., & Ostuzzi, G. (2025) · European Psychiatry · doi:10.1192/j.eurpsy.2025.2452 · Cited by 41 · see citing works
“Exposure to ACEs is associated with a higher risk of mental health disorders and suicidal behaviors in adulthood [6, 7], with a likely cumulative effect [8].”
Mitchell, K. J., Colburn, D., Finkelhor, D., Gewirtz-Meydan, A., Turner, H. A., & Jones, L. M. (2025) · Child Abuse & Neglect · doi:10.1016/j.chiabu.2025.107471 · Cited by 16 · see citing works
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“17,18 Such individuals are particularly vulnerable to mental health challenges 19,20 and trust is a signi fi cant challenge for them.”
BackgroundEick, S. M., Brennan, P. A., Buckley, J. P., Liang, D., Li, X., Karvonen, K. L., Cowell, W., Zhu, Y., Barrett, E. S., Peterson, A. K., et al. (2026) · Environmental Pollution · doi:10.1016/j.envpol.2025.127441 · Cited by 2 · see citing works
- Authors
- Daníelsdóttir, H. B., Aspelund, T., Shen, Q., Halldorsdottir, T., Jakobsdóttir, J., Song, H., Lu, D., Kuja-Halkola, R., Larsson, H., Fall, K., Magnusson, P. K. E., Fang, F., Bergstedt, J., & Valdimarsdóttir, U. A.
- Affiliations
- University of Iceland (IS)
- Tongji University (CN)
- Reykjavík University (IS)
- Karolinska Institutet (SE)
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
- Örebro University (SE)
- Harvard University (US)
- Corresponding author
- Daníelsdóttir, Hilda Björk
- ORCID
- Venue
- JAMA Psychiatry
- Publisher
- American Medical Association (AMA)
- Published
- 2024-06-01
- Volume
- 81
- Issue
- 6
- Pages
- 586
- ISSN
- 2168-622X (ISSN-L)
- PMC
- PMC10918580
- OpenAlex
- W4392505481
- Cited by
- 266
- References
- 15
- Citations by year
- 2026: 118 · 2025: 110 · 2024: 38
- FWCI
- 133.34
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- cc-by
- Locations
- JAMA Psychiatry (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Funders
- Vetenskapsrådet
- H2020 European Research Council (726413)
- Topics
- Social Sciences › Psychology › Clinical Psychology › Child Abuse and Trauma
- Social Sciences › Safety Research › Child Welfare and Adoption
- Social Sciences › Psychology › Clinical Psychology › Child and Adolescent Psychosocial and Emotional Development
- Keywords
- adverse childhood experiences, adult psychiatric disorders, familial confounding, monozygotic twins, dizygotic twins, discordant twins, sexual abuse, domestic violence, physical abuse, physical neglect, hate crimes, depression, anxiety, alcohol abuse, drug abuse, stress-related disorders, heritability
- MeSH terms
- Adverse Childhood Experiences, Adolescent, Adult, Mental Disorders, Female, Humans, Male, Mental Health, Middle Aged, Registries, Sweden, Twins, Dizygotic, Twins, Monozygotic, Cohort Studies, Young Adult
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