Chewing gum: the surprising new tool to kick the habit?
NCT ID NCT06801860
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tested if chewing gum can help people smoke less or quit. 80 adults in Hong Kong who wanted to quit or cut down either used chewing gum or tried to quit on their own for one week. Researchers measured how much they smoked and checked their saliva to confirm if they had stopped.
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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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80 people
The number who actually took part.
- Started
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Feb 2025
- Finished
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Oct 2025
- 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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18 years and older
- 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.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: 1. Residents of Hong Kong aged 18 or above 2. Smoking at least 1 cigarette per day over the past 3 months 3. Have the habit of chewing gum or are willing to use chewing gum 4. Participants who can communicate in Cantonese (including reading Chinese) 5. Expressing an intention to quit or reduce smoking 6. Capable of using instant messaging tools (e.g., WhatsApp, WeChat) for communication Exclusion Criteria: 1. Having communication barriers (either physical or cognitive) 2. Currently participating in other smoking cessation programs or services
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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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School of Nursing, The University of Hong Kong
Hong Kong, Pokfulam, 999077, Hong Kong
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Other studies related to the condition(s) this trial covers.
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