Hindley, G., Beck, K., Borgan, F., Ginestet, C. E., McCutcheon, R., Kleinloog, D., ... & Howes, O. D. (2020). Psychiatric symptoms caused by cannabis constituents: a systematic review and meta-analysis. The Lancet Psychiatry.
Approximately 188 million people use cannabis yearly worldwide, and it has recently been legalised in 11 US states, Canada, and Uruguay for recreational use. The potential for increased cannabis use highlights the need to better understand its risks, including the acute induction of psychotic and other psychiatric symptoms.