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Cannabis Smoking clinical trials and research
As of November 12, 2026, Find a Trial lists 5 Cannabis Smoking clinical trials that are recruiting, at sites in 2 countries (most in United States (4), Canada (1)). By phase: Phase 2 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 5Clinical trials
- 2Countries
Newest Cannabis Smoking clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| How price, availability, and cues influence marijuana and cigarette use in young adults | — | Providence, Rhode Island | Recruiting | Feb 9, 2026 |
| Brain imaging to predict teens' response to cannabis treatment | — | Indianapolis, Indiana | Recruiting | Jan 14, 2026 |
| How marijuana (THC) and tobacco interact when used together | Phase 2 | San Francisco, California | Recruiting | Aug 21, 2023 |
| Long-term effects of cannabis smoking on lung health | — | London, Ontario | Recruiting | Apr 10, 2019 |
| Effects of chronic cannabis smoking on lung health | — | Aurora, Colorado | Recruiting | Jun 24, 2015 |
All recruiting trials (5)
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How price, availability, and cues influence marijuana and cigarette use in young adults
This project will see if changing price, availability, and exposure to cues changes how 18- to 25-year-olds who smoke both marijuana and tobacco choose between them.
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Brain imaging to predict teens' response to cannabis treatment
This project will test whether teens' brain activity during a learning task can predict how well 14–17-year-olds do in a 10-week virtual reward program to reduce cannabis use.
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How marijuana (THC) and tobacco interact when used together
This test tries to see if combining marijuana (THC) and tobacco changes blood drug levels and how people feel and respond physically in adults who regularly use both.
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Long-term effects of cannabis smoking on lung health
This study is trying to see how smoking cannabis over a long time affects lung health in people aged 18 to 85.
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Effects of chronic cannabis smoking on lung health
This study is trying to see how long-term cannabis smoking affects lung health in regular users compared to non-smokers.
Related topics
Quick answers
How many Cannabis Smoking clinical trials are recruiting right now?
5, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 2 countries. The most sites are in United States (4 trials), Canada (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 2: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.