Hookah warning signs tested in atlanta cafés
NCT ID NCT05916170
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looked at whether posting health warnings in hookah cafés could reduce how much young adults smoke. Researchers measured carbon monoxide levels in 977 customers before and after they smoked. The goal was to see if warnings led to less smoking compared to no warnings.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- What this could lead to
- If effective, health warnings in hookah cafés could help reduce waterpipe tobacco smoking among young adults.
- What could go wrong
- This is a completed observational study, not a treatment trial. The findings may not apply to other settings or populations, and the effect of warnings may be small.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
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Wake Forest University Health Sciences
Winston-Salem, North Carolina, 27157, United States