Little cigars under the microscope: new study reveals hidden health risks
NCT ID NCT06310187
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study looks at how smoking little cigars affects levels of harmful chemicals called oxidants in the body. Researchers will compare three types of smoking: high-oxidant little cigars, low-oxidant little cigars, and regular cigarettes. Fifty daily smokers will provide breath, blood, saliva, and cheek cell samples before and after smoking to measure these effects.
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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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About 50 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Mar 2026
- Expected to finish
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Aug 2029
An estimate. End dates often move.
- 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 65 years
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
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: 1. Aged 21 - 65 years old 2. Daily cigarette smoker (\>= 1 cigarette per day); 3. Smoke regular, filtered cigarettes or machine rolled cigarettes with a filter 4. No current or past use of Little Cigars 5. All other forms of nicotine must be used \<6 days out of the past 30 days. 6. Able to read and write in English 7. No serious cigarette smoking quit attempt or use of any FDA-approved smoking cessation medication in the prior 30 days 8. No plan to quitting smoking in the next 3 months Exclusion Criteria: 1. Women who are pregnant and/or nursing or trying to become pregnant 2. Unstable or significant medical condition in the past 3 months (e.g., recent heart attack or other serious heart condition, stroke, severe angina) 3. Respiratory diseases (e.g., exacerbations of asthma or Chronic Obstructive Pulmonary Disease (COPD), require oxygen, require oral prednisone), kidney (e.g., dialysis) or liver disease (e.g., cirrhosis), severe immune system disorders (e.g., uncontrolled HIV/AIDS, multiple sclerosis symptoms) or any medical disorder/medication that may affect participant safety or biomarker data 4. Uncontrolled substance abuse or inpatient treatment for that condition in the past 6 months 5. Exhaled Carbon Monoxide (CO) measurement of \>= 17 parts per million
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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.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Penn State College of Medicine
RECRUITINGHershey, Pennsylvania, 17033, United States
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