European Teens Who Felt Hardest Hit by COVID Used More Cannabis

Among 106,000 European adolescents, those who perceived the pandemic as negatively impacting their lives had significantly higher rates of cannabis use compared to those who felt positively impacted.

Berchialla, Paola et al.·Addictive behaviors·2025·Strong EvidenceCross-Sectional
RTHC-06047Cross SectionalStrong Evidence2025RETHINKTHC RESEARCH DATABASErethinkthc.com/research

Quick Facts

Study Type
Cross-Sectional
Evidence
Strong Evidence
Sample
N=106,221

What This Study Found

Fourteen percent of adolescents were classified as negatively impacted by COVID, with this group overrepresented among girls, older teens, and less affluent families. Negatively impacted adolescents had higher risk of cannabis use, smoking, and drunkenness compared to positively impacted peers. Countries with highest negative impact rates included Hungary, Cyprus, Greece, and Poland (>25%).

Key Numbers

106,221 adolescents from 21 countries. 14% negatively impacted, 42% positively impacted, 44% neutral. Negatively impacted group had higher cannabis, smoking, and drunkenness risk. Highest negative impact: Hungary, Cyprus, Greece, Poland (>25%).

How They Did This

Analysis of 106,221 adolescents aged 11-15 from the 2021/22 HBSC study across 21 European countries. Multilevel Generalized Latent Class Analysis identified groups by perceived pandemic impact, then examined substance use as outcomes.

Why This Research Matters

This 21-country study shows that subjective pandemic experience, not just objective exposure, predicted substance use. Understanding that self-perceived negative impact drives risk behaviors can inform future crisis response targeting vulnerable youth.

The Bigger Picture

Major stressful events disproportionately affect certain youth populations, who then turn to substance use. The variation across countries suggests that societal and policy responses to crises can modify this relationship.

What This Study Doesn't Tell Us

Cross-sectional design collected in 2021/22 captures a single time point. Self-reported substance use and pandemic impact. Cannot determine whether negative impact caused substance use or vice versa. Country-level variation may reflect cultural differences in reporting.

Questions This Raises

  • ?Did cannabis use among negatively impacted teens persist after the pandemic?
  • ?Which specific aspects of pandemic experience drove the substance use increase?
  • ?Would mental health support during crises prevent this pattern?

Trust & Context

Key Stat:
14% of European teens were negatively impacted, with higher cannabis use
Evidence Grade:
Strong: very large multinational sample across 21 countries with sophisticated latent class analysis, though cross-sectional design
Study Age:
Published in 2025 using 2021/22 HBSC data from 21 European countries
Original Title:
Self-perceived impact of COVID-19 and risk behaviors among adolescents: Results from the HBSC 2021/22 study in 21 European countries.
Published In:
Addictive behaviors, 163, 108238 (2025)
Database ID:
RTHC-06047

Evidence Hierarchy

Meta-Analysis / Systematic Review
Randomized Controlled Trial
Cohort / Case-Control
Cross-Sectional / ObservationalSnapshot without intervening
This study
Case Report / Animal Study

A snapshot of a population at one point in time.

What do these levels mean? →

Frequently Asked Questions

Did COVID increase teen cannabis use?

Teens who perceived the pandemic as negatively impacting their lives had higher cannabis use rates. However, 42% of teens reported a positive pandemic impact and 44% were neutral, so the effect was concentrated among the 14% who felt most negatively affected.

Which teens were most affected?

Girls, older adolescents, and those from less affluent families were overrepresented in the negatively impacted group. Country-level variation was substantial, with Hungary, Cyprus, Greece, and Poland showing the highest rates of negative impact (>25%).

Read More on RethinkTHC

Cite This Study

RTHC-06047·https://rethinkthc.com/research/RTHC-06047

APA

Berchialla, Paola; Canale, Natale; Kilibarda, Biljana; Comoretto, Rosanna Irene; Alexandrova-Karamanova, Anna; Baška, Tibor; Ter Bogt, Tom; Vieno, Alessio; Charrier, Lorena. (2025). Self-perceived impact of COVID-19 and risk behaviors among adolescents: Results from the HBSC 2021/22 study in 21 European countries.. Addictive behaviors, 163, 108238. https://doi.org/10.1016/j.addbeh.2024.108238

MLA

Berchialla, Paola, et al. "Self-perceived impact of COVID-19 and risk behaviors among adolescents: Results from the HBSC 2021/22 study in 21 European countries.." Addictive behaviors, 2025. https://doi.org/10.1016/j.addbeh.2024.108238

RethinkTHC

RethinkTHC Research Database. "Self-perceived impact of COVID-19 and risk behaviors among a..." RTHC-06047. Retrieved from https://rethinkthc.com/research/berchialla-2025-selfperceived-impact-of-covid19

Access the Original Study

Study data sourced from PubMed, a service of the U.S. National Library of Medicine, National Institutes of Health.

This study breakdown was produced by the RethinkTHC research team. We analyze and report published research findings without making health recommendations. All interpretations are based solely on the published abstract and study data.