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Does cannabis use lead to depression and suicidal behaviours? A population-based longitudinal study.
Acta Psychiatr Scand 2008; 118(5):395-403AP

Abstract

OBJECTIVE

This study investigates the relationship between cannabis use and later depression, suicidal ideation and suicide attempts in a cohort of young Norwegians.

METHOD

Data were gathered through the Young in Norway longitudinal study, in which a population-based sample of 2033 Norwegians were followed up over a 13-year period, from their early teens to their late twenties. Data were gathered on: (a) exposure to cannabis use; and (b) depression, suicide ideation and suicide attempts. In addition, information about possible confounding factors was included.

RESULTS

In early adolescence, no associations with later depression or suicidal behaviours were observed. In the sample's twenties, we observed highly significant associations with suicide ideation and suicide attempts. When adjusting for confounders, the OR was 2.9 (95% CI 1.3-6.1) for later suicide attempts in the group who had used cannabis 11+ times during the past 12 months.

CONCLUSION

The findings suggest that exposure to cannabis by itself does not lead to depression but that it may be associated with later suicidal thoughts and attempts.

Authors+Show Affiliations

Department of Sociology and Human Geography, University of Oslo, Oslo, Norway. willy.pedersen@sosiologi.uio.no

Pub Type(s)

Journal Article

Language

eng

PubMed ID

18798834

Citation

Pedersen, W. "Does Cannabis Use Lead to Depression and Suicidal Behaviours? a Population-based Longitudinal Study." Acta Psychiatrica Scandinavica, vol. 118, no. 5, 2008, pp. 395-403.
Pedersen W. Does cannabis use lead to depression and suicidal behaviours? A population-based longitudinal study. Acta Psychiatr Scand. 2008;118(5):395-403.
Pedersen, W. (2008). Does cannabis use lead to depression and suicidal behaviours? A population-based longitudinal study. Acta Psychiatrica Scandinavica, 118(5), pp. 395-403. doi:10.1111/j.1600-0447.2008.01259.x.
Pedersen W. Does Cannabis Use Lead to Depression and Suicidal Behaviours? a Population-based Longitudinal Study. Acta Psychiatr Scand. 2008;118(5):395-403. PubMed PMID: 18798834.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Does cannabis use lead to depression and suicidal behaviours? A population-based longitudinal study. A1 - Pedersen,W, Y1 - 2008/09/16/ PY - 2008/9/19/pubmed PY - 2009/2/3/medline PY - 2008/9/19/entrez SP - 395 EP - 403 JF - Acta psychiatrica Scandinavica JO - Acta Psychiatr Scand VL - 118 IS - 5 N2 - OBJECTIVE: This study investigates the relationship between cannabis use and later depression, suicidal ideation and suicide attempts in a cohort of young Norwegians. METHOD: Data were gathered through the Young in Norway longitudinal study, in which a population-based sample of 2033 Norwegians were followed up over a 13-year period, from their early teens to their late twenties. Data were gathered on: (a) exposure to cannabis use; and (b) depression, suicide ideation and suicide attempts. In addition, information about possible confounding factors was included. RESULTS: In early adolescence, no associations with later depression or suicidal behaviours were observed. In the sample's twenties, we observed highly significant associations with suicide ideation and suicide attempts. When adjusting for confounders, the OR was 2.9 (95% CI 1.3-6.1) for later suicide attempts in the group who had used cannabis 11+ times during the past 12 months. CONCLUSION: The findings suggest that exposure to cannabis by itself does not lead to depression but that it may be associated with later suicidal thoughts and attempts. SN - 1600-0447 UR - https://www.unboundmedicine.com/medline/citation/18798834/Does_cannabis_use_lead_to_depression_and_suicidal_behaviours_A_population_based_longitudinal_study_ L2 - https://doi.org/10.1111/j.1600-0447.2008.01259.x DB - PRIME DP - Unbound Medicine ER -