Secondhand cannabis smoke: what gets into your body?
NCT ID NCT06030674
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looks at how secondhand cannabis smoke affects healthy nonsmokers. Researchers will measure cannabis byproducts in urine before and after exposure in public places. The goal is to understand how much of the smoke's chemicals enter the body. This is a small pilot study with 200 participants.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- secondhand cannabis smoke exposure
- What this could lead to
- If successful, this could help understand how secondhand cannabis smoke enters the body and inform public health guidelines.
- What could go wrong
- This is a small, early pilot study with only 200 healthy nonsmokers, so results may not apply to everyone. The exposure happens in real-world settings, making it hard to control all factors.
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As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
Zuckerberg San Francisco General Hospital
RECRUITINGSan Francisco, California, 94110, United States
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