BackgroundLongitudinal 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. MethodPeer-reviewed publications
reporting the risk of developing depression in cannabis users were located using searches
of EMBASE, Medline, PsychINFO and ISI Web of Science. Only longitudinal studies that�…

BackgroundLongitudinal 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. MethodsPeer-reviewed publications
that compared the risk of development of depression in cannabis users and non-userst were
located using searches of EMBASE, MEDLINE, PsychINFO and ISI Web of Science. Data on�…