Article URL: https://www.cambridge.org/core/journals/psychological-medicine/article/intelligence-quotient-decline-following-frequent-or-dependent-cannabis-use-in-youth-a-systematic-review-and-metaanalysis-of-longitudinal-studies/26BEC9CBD2A39010C26100278F8CA8…

Introduction
Cannabis is the most frequently used illicit substance worldwide, with the prevalence of lifetime cannabis use highest in young people (Degenhardt et al., Reference Degenhardt, Ferrari…