Associations between personality disorders and cannabis use and cannabis use disorder: a population-based twin study

Nathan A. Gillespie, Steven H. Aggen, Michael C. Neale, Gun Peggy Knudsen, Robert F. Krueger, Susan C. South, Nikolai Czajkowski, Ragnar Nesvåg, Eivind Ystrom, Kenneth S. Kendler, Ted Reichborn-Kjennerud

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Background and Aims: Individual differences in DSM-IV personality disorders (PDs) are associated with increased prevalence of substance use disorders. Our aims were to determine which combination of PDs trait scores best predict cannabis use (CU) and cannabis use disorder (CUD), and to estimate the size and significance of genetic and environmental risks in PD traits shared with CU and CUD. Design: Linear mixed-effects models were used to identify PD traits for inclusion in twin analyses to explore the genetic and environmental associations between the traits and cannabis use. Setting: Cross-sectional data were obtained from Norwegian adult twins in a face-to-face interview in 1999–2004 as part of a population-based study of mental health. Participants: Subjects were 1419 twins (μage = 28.2 years, range = 19–36) from the Norwegian Institute of Public Health Twin Panel with complete PD and cannabis data. Measurements: PD traits were assessed using DSM-IV criteria. Life-time CU and CUD were based on DSM-IV abuse and dependence criteria, including withdrawal and craving. Findings: After adjusting for age and sex, antisocial [β = 0.23, 95% confidence interval (CI) = 0.19–0.28] and borderline PDs (β = 0.20, 95% CI = 0.14–0.26) were associated strongly with CU. Antisocial (β = 0.26, 95% CI = 0.21–0.31) and borderline PDs (β = 0.12, 95% CI = 0.06–0.18) were also linked strongly to CUD. Genetic risks in antisocial and borderline PD traits explained 32–60% of the total variance in CU and CUD. Dependent and avoidant PDs explained 11 and 16% of the total variance in CU and CUD, respectively. Conclusions: Individual differences in the liability to cannabis use and cannabis use disorder appear to be linked to genetic risks correlated with antisocial and borderline personality disorder traits.

Original languageEnglish (US)
Pages (from-to)1488-1498
Number of pages11
JournalAddiction
Volume113
Issue number8
DOIs
StatePublished - Aug 2018

Bibliographical note

Funding Information:
We acknowledge funding from the United States National Institutes of Health, National Institute on Drug Abuse (1R01DA037558-01A1 and 12R01DA018673), the Research Council of Norway, the Norwegian Foundation for Health and Rehabilitation, the Norwegian Council for Mental Health, and the European Commission under the program ?Quality of Life and Management of the Living Resources? of the Fifth Framework Program (QLG2-CT-2002-01254). NAG had full access to all the data in this study and takes responsibility for the integrity of the data and the accuracy of the data analysis. The funding sources had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.

Funding Information:
Acknowledgements We acknowledge funding from the United States National Institutes of Health, National Institute on Drug Abuse (1R01DA037558-01A1 and 12R01DA018673), the Research Council of Norway, the Norwegian Foundation for Health and Rehabilitation, the Norwegian Council for Mental Health, and the European Commission under the program ‘Quality of Life and Management of the Living Resources’ of the Fifth Framework Program (QLG2-CT-2002-01254). NAG had full access to all the data in this study and takes responsibility for the integrity of the data and the accuracy of the data analysis. The funding sources had no role in the design and conduct of the study; collection, management, analysis, and interpretation of the data; preparation, review, or approval of the manuscript; and decision to submit the manuscript for publication.

Keywords

  • Cannabis use
  • cannabis use disorder
  • environment
  • genes
  • personality disorder traits
  • twin

Fingerprint Dive into the research topics of 'Associations between personality disorders and cannabis use and cannabis use disorder: a population-based twin study'. Together they form a unique fingerprint.

Cite this