Changes in international cannabis policies and their association with cannabis use, cannabis use disorder and other psychiatric disorders

Tom Freeman; Rachel Lees Thorne; Elle Wadsworth; Tara Carney; Alvaro Castillo-Carniglia; Magdalena Cerdá; Rasmon Kalayasiri; Beau Kilmer; Valentina Lorenzetti; Jakob Manthey; Daniel Myran; Ariadne Rivera Aguirre; Marta Rychert; Jack Wilson; Tesfa Yimer; Wayne Hall

Changes in international cannabis policies and their association with cannabis use, cannabis use disorder and other psychiatric disorders

Tom Freeman, Rachel Lees Thorne, Elle Wadsworth, Tara Carney, Alvaro Castillo-Carniglia, Magdalena Cerdá, Rasmon Kalayasiri, Beau Kilmer, Valentina Lorenzetti, Jakob Manthey, Daniel Myran, Ariadne Rivera Aguirre , Marta Rychert, Jack Wilson, Tesfa Yimer, Wayne Hall

Research output: Contribution to journal › Review article › peer-review

Original language	English
Journal	The Lancet Psychiatry
Publication status	Acceptance date - 11 Mar 2026

Embargoed Document

International cannabis policies revised
Accepted author manuscript, 925 KB
Embargo ends: 31/12/99
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Embargoed Document

International cannabis policies supplement revised
Accepted author manuscript, 236 KB
Embargo ends: 31/12/99
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Cite this

Freeman, T., Lees Thorne, R., Wadsworth, E., Carney, T., Castillo-Carniglia, A., Cerdá, M., Kalayasiri, R., Kilmer, B., Lorenzetti, V., Manthey, J., Myran, D., Rivera Aguirre , A., Rychert, M., Wilson, J., Yimer, T., & Hall, W. (Accepted/In press). Changes in international cannabis policies and their association with cannabis use, cannabis use disorder and other psychiatric disorders. The Lancet Psychiatry.

Freeman, T , Lees Thorne, R , Wadsworth, E, Carney, T, Castillo-Carniglia, A, Cerdá, M, Kalayasiri, R, Kilmer, B, Lorenzetti, V, Manthey, J, Myran, D, Rivera Aguirre , A, Rychert, M, Wilson, J, Yimer, T & Hall, W 2026, 'Changes in international cannabis policies and their association with cannabis use, cannabis use disorder and other psychiatric disorders', The Lancet Psychiatry.

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title = "Changes in international cannabis policies and their association with cannabis use, cannabis use disorder and other psychiatric disorders",

author = "Tom Freeman and \{Lees Thorne\}, Rachel and Elle Wadsworth and Tara Carney and Alvaro Castillo-Carniglia and Magdalena Cerd{\'a} and Rasmon Kalayasiri and Beau Kilmer and Valentina Lorenzetti and Jakob Manthey and Daniel Myran and \{Rivera Aguirre\}, Ariadne and Marta Rychert and Jack Wilson and Tesfa Yimer and Wayne Hall",

year = "2026",

month = mar,

day = "11",

language = "English",

journal = "The Lancet Psychiatry",

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TY - JOUR

T1 - Changes in international cannabis policies and their association with cannabis use, cannabis use disorder and other psychiatric disorders

AU - Freeman, Tom

AU - Lees Thorne, Rachel

AU - Wadsworth, Elle

AU - Carney, Tara

AU - Castillo-Carniglia, Alvaro

AU - Cerdá, Magdalena

AU - Kalayasiri, Rasmon

AU - Kilmer, Beau

AU - Lorenzetti, Valentina

AU - Manthey, Jakob

AU - Myran, Daniel

AU - Rivera Aguirre , Ariadne

AU - Rychert, Marta

AU - Wilson, Jack

AU - Yimer, Tesfa

AU - Hall, Wayne

PY - 2026/3/11

Y1 - 2026/3/11

M3 - Review article

SN - 2215-0366

JO - The Lancet Psychiatry

JF - The Lancet Psychiatry

ER -