Adolescent cannabis use and risk of mental health problems—the need for newer data

Recent high-profile meta-analyses have reported that adolescent cannabis use is not a major risk factor for a number of previously linked mental health problems (e.g. 1, 2). For example, Gobbi and colleagues recently reported in a meta-analysis of longitudinal studies that adolescent cannabis use was not significantly related to anxiety in young adulthood, and modestly related to depression 1. However, their meta-analysis was based on studies...