Study of cannabis smoke and lung immune response
Part of Lungs & breathing clinical trials.
This study compares people who smoke cannabis daily with people who have never used cannabis. It looks at how cannabis smoke affects lung stress and the lungs’ immune defenses, using health tests and urine screening to keep participants safe.
Summary written for real people, not researchers, by Clin2.
Who can take part
- Be between 21 and 55 years old
- Be able to understand questions and sign consent
- For the cannabis group: smoke cannabis nearly every day with enough total exposure (at least 20 “joint years”)
- For the control group: never use cannabis (must test negative on a urine drug screen)
- Have very low lifetime cigarette exposure (under 1 “pack year”) for both groups
- Not be pregnant
Quick eligibility check
Answer a few plain-language questions, based on this study's own requirements, to get a preliminary sense of fit.
Similar studies
Other trials that look related to this one.
This study follows people who currently or used to smoke cannabis to see how cannabis use may change certain MRI scan signals in the brain over time. You may help researchers understand the effects of cannabis smoking and how brain imaging changes can be measured safely.
This trial looks at how marijuana and tobacco work together in your body. If you regularly use both cannabis and tobacco, you may help researchers understand their combined effects.
This study looks at how certain chemicals from little cigars affect the body. It may help researchers understand health risks. You must be a daily cigarette smoker who has never smoked little cigars.
This study looks at how cannabis affects your lungs when you inhale it. It is for people who currently use both cannabis and tobacco and want to help researchers understand how these substances impact breathing and overall lung health.
This study measures how much tobacco and cannabis smoke nonsmokers are exposed to in their daily lives. It may help understand health risks from secondhand smoke.
This study looks at different lung immune cell patterns and how they work in smokers who are not yet diagnosed with COPD or asthma. It may help researchers understand why some people are more likely to develop COPD, which could guide future prevention or early treatments.
Hear when a new Cannabis Smoking trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.