First-author publications
Exploring how cannabis use featured in the mental health experiences and daily lives of queer, non-binary, and trans youth in the early phases of the COVID-19 pandemic: A mixed-methods study in Canada
Reference:
London-Nadeau, K., McKenzie, S., Carson, A., Ferlatte, O., Knight, R. & Coulaud, P.-J. (2026). Exploring how cannabis use featured in the mental health experiences and daily lives of queer, non-binary, and trans youth in the early phases of the COVID-19 pandemic: A mixed-methods study in Canada. Journal of Homosexuality. 1-26.
The PARLONSMAAT study: Protocol for a participatory longitudinal study of the impacts of gender-affirming care among transgender and gender-diverse adolescents
Reference:
London-Nadeau, K., Rioux, C., Chiniara, L., Pullen Sansfaçon, A., Lavoie, K., Jodoin, A., Lefebvre, C., Scott, R., Fournier, C., Coutu, M.-S., Pallanca, D., Waskiewicz, D. & Chadi, N. (2026). The PARLONSMAAT study: Protocol for a participatory longitudinal study of the impacts of gender-affirming care among transgender and gender-diverse adolescents. American Journal of Epidemiology, kwag066.
Supporting sexually diverse youth requires a full spectrum understanding of substance use
Reference:
London-Nadeau, K. & Rioux, C. (2026). Supporting sexually diverse youth requires a full spectrum understanding of substance use. Addiction.
Link to article:
Sexual diversity, adolescent mental health, and adult cannabis use: Longitudinal associations through cannabis use motives
Reference:
London-Nadeau, K., Pocuca, N., Chadi, N., Côté, S., Fallu, J-S., Geoffroy, M-C., Huynh, C., Juster, R.-P., Séguin, J. & Castellanos Ryan, N. (2025). Sexual diversity, adolescent mental health, and adult cannabis use: Longitudinal associations through cannabis use motives. Addictive Behaviors, 173(108530).
Scapegoated communities, shared struggles: A call for solidarity with people who use drugs and queer and trans people
Reference:
London-Nadeau, K., Rioux, C., Fallu, J.-S., Parent, S., Séguin, J. R., Vitaro, F. & Castellanos Ryan N. (2025) Stress mediates the link between sexual orientation and cannabis use profiles. Annals of LGBTQ Public and Population Health.
Stress mediates the link between sexual orientation and cannabis use profiles
Reference:
London-Nadeau, K., Rioux, C., Fallu, J.-S., Parent, S., Séguin, J. R., Vitaro, F. & Castellanos Ryan N. (2025) Stress mediates the link between sexual orientation and cannabis use profiles. Annals of LGBTQ Public and Population Health.
Beyond struggle: A strengths-based qualitative study of cannabis use among queer and trans youth in Québec
Reference:
London-Nadeau, K., Lafortune, C., Gorka, C., Lemay-Gaulin, M., Séguin, J., Haines-Saah, R., Ferlatte, O., Chadi, N., Juster, R.-P., Bristowe, S., D’Alessio, H., Bernal, L., Ellis-Durity, K., Barbosa, J., Da Costa De Carlos, L. A. A. C. et Castellanos Ryan, N. (2024). Beyond struggle: A strengths-based qualitative study of cannabis use among queer and trans youth in Québec. International Journal of Drug Policy, 104512.
https://doi.org/https://doi.org/10.1016/j.drugpo.2024.104512
YouthREX, Research & Evaluation eXchange, Research Summary:
Media coverage (click image to listen to the CBC Let’s go segment):
Barriers and opportunities in community-led cannabis research: Group reflections from a queer and trans youth-led research project
Reference:
London-Nadeau, K., Lafortune, C., Gorka, C., Lemay-Gaulin, M., D’Alessio, H., Bristowe, S. et Castellanos Ryan, N. (2024). Barriers and opportunities in community-led cannabis research: Group reflections from a queer and trans youth-led research project. International Journal of Drug Policy, 104506.
https://doi.org/https://doi.org/10.1016/j.drugpo.2024.104506
Social Support and Mental Health Among Transgender and Nonbinary Youth in Quebec
Reference:
London-Nadeau, K., Chadi, N., Taylor, A. B., Chan, A., Pullen Sansfaçon, A., Chiniara, L., Lefebvre, C. & Saewyc, E. (2023). Social support and mental health among transgender and non-binary youth in Quebec. LGBT Health.
http://doi.org/10.1089/lgbt.2022.0156
Longitudinal associations of cannabis, depression, and anxiety in heterosexual and LGB adolescents
Reference:
London-Nadeau, K., Rioux, C., Parent, S., Vitaro, F., Côté, S. M., Boivin, M., Tremblay, R. E., Séguin, J. R., & Castellanos-Ryan, N. (2021). Longitudinal associations of cannabis, depression, and anxiety in heterosexual and LGB adolescents. Journal of abnormal psychology, 130(4), 333–345.
https://doi.org/10.1037/abn0000542
