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Problematic Cannabis Use in the University Setting: Analysis of Differential Factors and Polysubstance Use Patterns.

Authors

DOI:

https://doi.org/10.26754/ojs_ais/accionesinvestig.soc..20254711724

Keywords:

problematic cannabis use, polysubstance use, university students, age of initiation, sexual orientation

Abstract

Problematic cannabis use among university students represents a multidimensional public health challenge, closely linked to early substance use initiation, polysubstance patterns, and specific sociodemographic vulnerabilities. This study aims to estimate the prevalence of problematic cannabis use in a large sample of Galician university students, and to explore differential factors—particularly sex and sexual orientation—as well as co-occurring substance use patterns. A cross-sectional survey was conducted with 1,790 participants from three public universities, using validated screening instruments (CAST, AUDIT, CRAFFT). Findings revealed a 4.7% rate of problematic cannabis use, significantly higher among male students. This problematic use was associated with early onset of alcohol, tobacco, and cannabis consumption, and with frequent co-use of other substances such as stimulants, sedatives, and nicotine-based products. Although differences by sexual orientation did not reach statistical significance, an elevated risk trend was observed among LGTBI students. The findings highlight the urgent need for early, intersectional, and culturally sensitive prevention strategies aimed at disrupting substance use trajectories and promoting supportive university environments.

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Author Biographies

  • Manuel Isorna-Folgar

    Manuel Isorna Folgar holds a PhD in Psychology and is a professor at the Faculty of Education and Social Work at the University of Vigo. He holds a Master’s degree in Drug Dependence from the University of Santiago de Compostela and another in Attention Deficit Hyperactivity Disorder (ADHD). For over 25 years, he served as the head of drug prevention at the Catoira City Council—a role that earned him the Reina Sofía Award in 2012 and the Spanish Federation of Municipalities and Provinces Award in 2013 for "Best Practices in Drug Prevention."

    In the academic sphere, his research focuses on the prevention of drug addiction and addictive behaviors, ADHD, and sports psychology. He has authored numerous books and scientific articles related to education, adolescence, and substance use. He also serves as the president of the organizing committee of the International Congress on Cannabis and Its Derivatives: Health, Education, and Law. In addition, he is a professor at the Galician Academy of Public Safety, where he trains law enforcement personnel on issues related to drug dependence and addictive behaviors.

  • Nuria García-Couceiro, Universidad de Vigo

    Nuria García Couceiro is a faculty member in the Department of Psychiatry, Radiology, Public Health, Nursing and Medicine at the University of Santiago de Compostela (USC), affiliated with the Faculty of Nursing and the academic area of Nursing. She is an active member of the research group PSICOM and collaborates closely with its principal investigator, Dr. Antonio Rial Boubeta, on applied studies in the field of substance abuse and behavioral addictions. She is also part of the research group Dependence, Gerontology and Geriatrics, through which she has contributed to complementary studies in community health and care.

    Her most recent research activity focuses on the analysis of risk and protective factors in the use of psychoactive substances, problematic cannabis use, polysubstance use patterns among young people, and the impact of behavioral addictions on mental health. She has participated in several research projects funded by the Spanish National Drug Plan (PNSD), and has co-authored numerous peer-reviewed publications in indexed journals (JCR, Scopus), contributing to the scientific understanding of addiction-related issues in university and adolescent populations from a preventive and biopsychosocial perspective.

    In her academic role, she teaches in the Bachelor’s Degree in Nursing and in postgraduate programs related to public health and social health intervention. She has supervised undergraduate theses and is involved in the mentorship of clinical training in both hospital and community settings. Her educational focus is on the development of professional competencies to support individuals in situations of vulnerability and social risk.

    She also actively participates in faculty academic committees and collaborates with health and social care institutions on initiatives aimed at addiction prevention, health promotion, and public education for an informed and critically aware society.

    Personal webpage (ORCID): https://orcid.org/0000-0002-9670-8809

  • Millán Brea-Castro

    Millán Brea Castro holds a PhD from the University of Vigo, where he defended his doctoral thesis in 2015 titled "A Casa da Xuventude de Ourense as a Historical Experience of Social Education (1978–1992)", under the supervision of Dr. Xosé Manuel Cid Fernández. He is currently an Associate Professor in the Area of Theory and History of Education, within the Department of Psychosocioeducational Analysis and Intervention at the Faculty of Education and Social Work, on the Ourense Campus.

    His teaching focuses primarily on the Bachelor’s Degree in Social Education, where he teaches courses such as “Education and Socio-Labor Animation,” “Socio-Educational Intervention in the Family Context,” and “Education: Social Pedagogy.”

    In the field of research, Dr. Brea Castro is a member of the research group "DE3: Education, Physical Activity and Health. GIES." His main research interests include leisure, culture, and community development; social education and leisure, with an emphasis on community action and empowerment processes; and the educational use of Information and Communication Technologies (ICT) among young people.

  • Víctor José Villanueva-Blasco

    PhD in Psychology, awarded with the distinction "Cum Laude". Accredited as "Contratado Doctor" (Associate Professor) by ANECA. Recognized with one Research Merit Tranche (Sexenio) for the period 2016–2021. Extensive professional experience (21 years), teaching experience (12 years), and research experience (10 years). Advisor to the Department of Health of the Regional Government of Galicia (Xunta de Galicia) since 2005. Coordinator of the Program for Active Outreach and Open Environment Intervention with Drug-Dependent Individuals in Situations of Social Exclusion (2005–2010). Coordinator of the Working Group for the Development of the Addictive Disorders Plan of Galicia (2011–2016). Member of the Management Team and Coordinator of the EVICT Project (Cannabis-Tobacco Evidence) promoted by the Spanish National Committee for Tobacco Prevention (2018–2021). Member of the Steering Group of ISSUP Spain (International Society of Substance Use Professionals) since 2021. Member of the Management Commission of the Primary Care Addiction Research Network (RIAPAD) since 2021.

  • Antonio Rial-Boubeta

    Antonio Rial Boubeta holds a PhD in Psychology and is an Associate Professor at the Faculty of Psychology of the University of Santiago de Compostela.
    He is the Technical Director of the Consumer and User Psychology Unit (USC-PSICOM) and an expert in research methodology in the social and health sciences.
    He is the author of over one hundred articles published in national and international scientific journals and has led numerous research projects focused on adolescents, particularly in relation to alcohol consumption, problematic internet use, and new technologies.

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Published

2025-08-18

Data Availability Statement

The data used in this study are available upon reasonable request to the research team and may be provided upon request by the editorial committee or reviewers.

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No. 47 (2025): Acciones e Investigaciones Sociales (online first)

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Copyright (c) 2025 Manuel Isorna-Folgar, Nuria García-Couceiro, Millán Brea-Castro, Víctor José Villanueva-Blasco, Antonio Rial-Boubeta

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How to Cite

Isorna-Folgar, M. ., García-Couceiro, N., Brea-Castro, M. ., Villanueva-Blasco, V. J., & Rial-Boubeta, A. (2025). Problematic Cannabis Use in the University Setting: Analysis of Differential Factors and Polysubstance Use Patterns. Acciones E Investigaciones Sociales, 47. https://doi.org/10.26754/ojs_ais/accionesinvestig.soc..20254711724