Cannabis involvement and nonsuicidal self-injury: A discordant twin approach
- Few, L.R.
- Grant, J.D.
- Nelson, E.C.
- Trull, T.J.
- Grucza, R.A.
- Bucholz, K.K.
- Verweij, K.J.H.
- Martin, N.G.
- Statham, D.J.
- Madden, P.A.F.
- Heath, A.C.
- Lynskey, M.T.
- Agrawal, A.
DOIAbstract
Item does not contain fulltextOBJECTIVE: Cannabis use, particularly at an early age, has been linked to suicidal thoughts and behavior, but minimal work has examined the association between cannabis use and lifetime nonsuicidal self-injury (NSSI). The current study aims to characterize the overlap between lifetime and early cannabis use and NSSI and to examine genetic and environmental mechanisms of this association. METHOD: Adult male and female twins from the Australian Twin Registry (N = 9,583) were used to examine the odds of NSSI associated with lifetime cannabis use and early cannabis use (i.e., <17 years of age). These associations were also examined within monozygotic (MZ) twins discordant for cannabis use and MZ twins discordant fo...
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