Cannabis products are rapidly changing. The THC level or ‘strength’ of cannabis flower has increased, particularly in North American markets. Cannabis products have also diversified towards more ‘processed’ forms, including vaping liquids, oral liquids, edibles and beverages, and a wider range of solid concentrates. At the same time, the use of non-THC ‘CBD’ products has increased, particularly among consumers using cannabis products for therapeutic reasons.
Our research is examining changes in product forms and patterns of use, including potential implications for problematic cannabis use. Our work is also helping to develop the methods for assessing different product forms in population-based surveys and self-reported measures.
Recent papers on cannabis products
Exploring THC labelling preferences to communicate the strength of cannabis products: Insights from U.S. consumers.
Dawson D, Hall W, Goodwin I, Carlini BH, Lubman DI, Freeman T, Lorenzetti V, Hammond D. International Journal of Drug Policy 2025; Dec 23;147:105076.
Co-designing AI-generated vaping awareness materials with adolescents and young adults: A qualitative study.
Sun S, Chang G, Stjepanović D, Yimer T, Vu G, Lim C, McClure-Thomas C, Connor J, Hall W, Hides L, Hammond D, Dietrich T, Erku
Product characteristics, warnings, and marketing appeals conveyed on Delta-8 THC product packaging in the US and Canada.
Robichaud MO, Spillane TE, Kennedy RD, Hammond D. Journal of Studies on Alcohol and Drugs 2025; Aug 8. doi: 10.15288/jsad.25-00034.
Self-reported cannabis prices and expenditures from legal and illegal sources five years after legalization of non-medical cannabis in Canada.
Rundle S, Hong D, Iraniparast M, Rynard V, Wadsworth E, Pacula RL, Kilmer B, Hammond D. Drug & Alcohol Review 2025; Aug 4. doi: 10.1111/dar.70009.
Cannabis consumer patterns, adverse events, and cannabis risk beliefs: a latent profile analysis in WA State.
Garret SB, Williams J, Carlini BH, Hammond D. Drug & Alcohol Dependence 2025; 273:112728.
Cannabidiol-only product use in Pregnancy in the United States and Canada: Findings from the International Cannabis Policy Study.
Bhatia D, Sakai J, Reddy S, Mikulich S, Hammond D. Obstetrics & Gynecology 2024; 144(2):156-159.
Adverse outcomes of cannabis use in Canada, before and after legalization of non-medical cannabis: cross-sectional analysis of the international cannabis policy study.
Marquette A, Iraniparast M, Hammond D. British Medical Journal Open 2024; 14(1):e077908.
Use of flavored cannabis vaping products in the US, Canada, Australia, and New Zealand: Findings from the International Cannabis Policy Study Wave 4 (2021).
D’Mello K, Chan GCK, Hall W, Rychert M, Wilkins C, Hammond D. The American Journal of Drug and Alcohol Abuse 2023; 49(5): 640-651.
Self-reported THC content and associations with perceptions of feeling high among cannabis consumers.
Lineham J, Wadsworth E, Hammond D. Drug and Alcohol Review 2023; 42(5):1142-1152.
Co-use, Simultaneous Use, and Mixing of Cannabis and Tobacco: A Cross-National Comparison of Canada and the US by Cannabis Administration Type.
Chu A, Chaiton M, Kaufman P, Goodwin R, Lin J, Hindocha C, Goodman S, Hammond D. International Journal of Environmental Research and Public Health 2023;
