ArticleThe European respiratory journal2026
Clinical, physiological, imaging and molecular responses to cannabis smoking: the Canadian Users of Cannabis Smoke (CANUCK) study.
Article in The European respiratory journal, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
2 citing papers in PubMed.
- Preclinical models of COPD: a state of the art review.The European respiratory journal · 2026Review
- From symptoms to mechanisms: multidimensional insights into cannabis smoke.The European respiratory journal · 2026Article
Corrections and comments
- Commented on by
Authors and funding
27 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe growing popularity of cannabis smoking in an era of legalisation has prompted concerns about respiratory health.
objectiveTo investigate clinical and airway epithelial transcriptomic features associated with cannabis smoking.
methodsThis cross-sectional study analysed data from 139 cannabis-smoking participants categorised by joint-year exposure (low: ≤5; moderate: >5-20; high: >20 joint-years) and 57 never-smokers. We evaluated respiratory symptom questionnaire scores, lung function measurements, chest computed tomography and hyperpolarised
resultsAmong cannabis-smoking participants (48% male, median age of 27 years), 84% reported current or former cigarette smoking or vaping. Cannabis-smoking groups reported worse respiratory symptoms than never-smokers. High joint-year cannabis-smoking participants showed lower pre-bronchodilator forced expiratory volume in 1 s to forced vital capacity ratio, lower forced expiratory flow at 25-75% of the forced vital capacity, more radiographic emphysema and more ventilation abnormalities than never-smokers. Airway epithelial brushings from cannabis-smoking participants demonstrated an increased type 2 immune response, decreased type 17 immune response and higher
conclusionsCannabis smoking, particularly at high exposures, is associated with worse respiratory symptoms, lower lung function, functional imaging abnormalities and dysregulated immune responses in the airway epithelium. These observations suggest respiratory harm associated with cannabis smoking and underscore the concerns for future respiratory morbidities related to persistent cannabis use.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.