The association between cannabis use and depression: a systematic review and meta-analysis of longitudinal studies

@article{LevRan2013TheAB,
  title={The association between cannabis use and depression: a systematic review and meta-analysis of longitudinal studies},
  author={Shaul Lev-Ran and Michael Roerecke and Bernard Le Foll and Tony P. George and Kwame McKenzie and J{\"u}rgen Rehm},
  journal={Psychological Medicine},
  year={2013},
  volume={44},
  pages={797 - 810}
}
Background Longitudinal studies reporting the association between cannabis use and developing depression provide mixed results. The objective of this study was to establish the extent to which different patterns of use of cannabis are associated with the development of depression using meta-analysis of longitudinal studies. Method Peer-reviewed publications reporting the risk of developing depression in cannabis users were located using searches of EMBASE, Medline, PsychINFO and ISI Web of… 
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