Bigger waterpipe, bigger risk? study reveals size matters
NCT ID NCT05705375
First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time
Summary
This study looked at whether the size of a waterpipe changes how people smoke and what they inhale. Forty young adult waterpipe smokers each used a small, medium, and large waterpipe in separate lab visits. Researchers measured puffing patterns, nicotine and carbon monoxide levels, and how satisfying or harmful smokers found each size.
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 successful, this study could help public health officials understand how waterpipe design influences smoking habits and harm perception.
- What could go wrong
- This is a small, completed observational study with only 40 participants. Results may not apply to all waterpipe smokers or real-world settings.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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40 people
The number who actually took part.
- Started
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Apr 2022
- Finished
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Mar 2024
- Lead sponsor
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Other sponsor
The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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21 to 39 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * regular waterpipe smokers (smoking at least once a week for the past 6 months) * generally healthy and * able to provide written informed consent; and willing to attend the 3 lab sessions Exclusion Criteria: * history of chronic diseases such as diabetes, high blood cholesterol, hepatic disease * respiratory chronic diseases * cardiovascular diseases including low or high blood pressure (BP)
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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
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University of Texas at Arlington
Arlington, Texas, 76019, United States