What emergency departments should expect as cannabis legalization expands in Germany
Based on trends from Canada and other countries, Germany can expect rising cannabis-related emergency visits following legalization, with acute intoxication, panic attacks, and cannabinoid hyperemesis syndrome as the most common presentations.
Quick Facts
What This Study Found
In Canada after legalization, cannabis use among those 15+ rose from 15% to 25%, and hospital admissions doubled from 15 to 32 per 100,000. Acute intoxication with anxiety and panic attacks was the most common emergency presentation.
Key Numbers
Canada post-legalization: cannabis use rose from 15% (2017) to 25% (2021). Hospital admissions doubled from 15/100,000 (2017) to 32/100,000 (2022). European cannabis use prevalence estimated at 8%.
How They Did This
Narrative review of cannabis-related emergency trends from countries that have legalized, supplemented with descriptive data from Germany's Poison Control Center North.
Why This Research Matters
Germany legalized cannabis use in 2024. Emergency physicians need to anticipate increased cannabis-related presentations and recognize conditions like cannabinoid hyperemesis syndrome, which can mimic other abdominal emergencies.
The Bigger Picture
As more countries legalize cannabis, the emergency medicine implications become a global concern. Patterns from early-legalizing countries provide useful forecasts for newly legalizing jurisdictions.
What This Study Doesn't Tell Us
Narrative review without systematic search methodology. Cross-country comparisons may not account for cultural, regulatory, and healthcare system differences. German data is still preliminary.
Questions This Raises
- ?Will Germany's specific regulatory model produce different emergency patterns than Canada's?
- ?How many cannabis emergencies go unrecognized due to nonspecific symptoms?
Trust & Context
- Key Stat:
- Canada's cannabis hospital admissions doubled post-legalization
- Evidence Grade:
- Narrative review synthesizing observational data from multiple countries. Provides useful pattern recognition but lacks systematic rigor.
- Study Age:
- Published in 2025.
- Original Title:
- Cannabis-Associated Emergencies in the Emergency Department.
- Published In:
- Deutsches Arzteblatt international, 122(17), 467-471 (2025)
- Authors:
- Eichhorn, David, Schaper, Andreas, Iwersen-Bergmann, Stefanie, Ondruschka, Benjamin, Weber-Papen, Sabrina, Bernhard, Michael
- Database ID:
- RTHC-06391
Evidence Hierarchy
Summarizes existing research without a strict systematic method.
What do these levels mean? →Frequently Asked Questions
Do emergency room visits increase after cannabis legalization?
Based on Canada's experience, yes. Hospital admissions for cannabis-related issues doubled from 15 to 32 per 100,000 between 2017 and 2022 following legalization.
What are the most common cannabis emergencies?
Acute intoxication with anxiety and panic attacks is the most common presentation. Cannabinoid hyperemesis syndrome, causing severe cyclical vomiting and abdominal pain, is another recognized condition.
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Cite This Study
https://rethinkthc.com/research/RTHC-06391APA
Eichhorn, David; Schaper, Andreas; Iwersen-Bergmann, Stefanie; Ondruschka, Benjamin; Weber-Papen, Sabrina; Bernhard, Michael. (2025). Cannabis-Associated Emergencies in the Emergency Department.. Deutsches Arzteblatt international, 122(17), 467-471. https://doi.org/10.3238/arztebl.m2025.0074
MLA
Eichhorn, David, et al. "Cannabis-Associated Emergencies in the Emergency Department.." Deutsches Arzteblatt international, 2025. https://doi.org/10.3238/arztebl.m2025.0074
RethinkTHC
RethinkTHC Research Database. "Cannabis-Associated Emergencies in the Emergency Department." RTHC-06391. Retrieved from https://rethinkthc.com/research/eichhorn-2025-cannabisassociated-emergencies-in-the
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.