Skip to main content

Research Faculty

Kevin Tzu Tsun LUK

Dr Kevin Luk is a registered nurse and currently a Research Assistant Professor at the School of Nursing, The University of Hong Kong (HKU), where he earned his bachelor's and PhD degrees. His research focuses on devising, testing, and implementing scalable and sustainable interventions for lifestyle modifications by leveraging digital health technologies. His doctoral study on chat-based intervention for smoking cessation using mobile instant messaging apps like WhatsApp has laid the groundwork for developing similar treatment models to tackle smoking and other lifestyle risk factors. He built and implemented the first WhatsApp chatbot ( in Hong Kong to promote the reach and uptake of smoking cessation services. Currently, he is leading three competitive external research grants for evaluating advanced digital health interventions for tobacco cessation and gestational diabetes prevention.

Dr Luk has published over 40 articles in international, peer-reviewed journals, including in JAMA Internal Medicine, Lancet Digital Health, and Tobacco Control as a lead author. His research achievements and impact have won him the Faculty Outstanding Research Output Award and the Faculty Knowledge Exchange Award from LKS Faculty of Medicine, HKU, among other accolades.

Funding Scheme Project Title Approved Amount (HK$)
General Research Fund Mobile instant messaging-based lifestyle intervention for pregnant women at risk of gestational diabetes: a randomised controlled trial. 1,292,000
Health and Medical Research Fund Development of a chatbot for smoking cessation counselling for youth smokers enrolled in the Youth Quitline: a pilot randomised trial 500,000
Health and Medical Research Fund Effectiveness of mobile chat messaging for preventing relapse in smokers who have recently quit smoking: a randomised controlled trial 1,398,630
Tung Wah Group of Hospitals Integrated Centre on Smoking Cessation Developing and evaluating a chatbot for increasing accessibility of smoking cessation services. 265,341
  1. Luk TT*, Cheung YTD, Chan HC, Fok PW, Ho KS, Sze CD, Lam TH, Wang MP. Mobile chat messaging for preventing smoking relapse: a pilot randomized controlled trial. Nicotine & Tobacco Research 2023 Feb;25(2):291-297. Available from: doi: 10.1093/ntr/ntac045
  2. Weng X, Luk TT (co-first author), Wu YS, Zhao SZ, Cheung DYT, Tong HSC, Lai VWY, Lam TH, Wang MP. Effect of smoking-related COVID-19 risk messaging on smoking cessation in community smokers: A pragmatic randomized controlled trial. Tobacco Induced Diseases. 2023 Jun 14;21:77.
  3. Luk TT, Lui JHT, Wang MP. Efficacy, usability, and acceptability of a chatbot for promoting COVID-19 vaccination in unvaccinated or booster-hesitant young adults: pre-post pilot study. Journal of Medical Internet Research 2022 Oct;24(10):e39063. Available from: doi: 10.2196/39063
  4. Luk TT, Weng X, Wu YS, Chan HL, Lau CY, Kwong AC, Lai VW, Lam TH, Wang MP. Association of heated tobacco product use with smoking cessation in Chinese cigarette smokers in Hong Kong: a prospective study. Tobacco Control. 2021 Nov;30(6):653-659. Available from: doi: 10.1136/tobaccocontrol-2020-055857
  5. Luk TT, Zhao S, Weng X, Wong JY, Wu YS, Ho SY, Lam TH, Wang MP. Exposure to health misinformation about COVID-19 and increased tobacco and alcohol use: a population-based survey in Hong Kong. Tobacco Control. 2021 Nov;30(6):696-699. Available from: doi: 10.1136/tobaccocontrol-2020-055960
  6. Luk TT, Lam TH, Leung W, Leung K, Cheung KW, Kwa C, Siong K, Tang K, Lee K, Hsieh CJ, Wu Y, Li WHC, Wang MP. Brief advice, nicotine replacement therapy sampling, and active referral for expectant fathers who smoke cigarettes: a randomized clinical trial. JAMA Internal Medicine 2021 Jun 14 (Epub ahead of print). Available from: doi:10.1001/jamainternmed.2021.2757
  7. Wang MP, Luk TT (co-first author), Wu Y, Li WHC, Cheung DYT, Kwong ACS, Lai VWT, Chan SSC, Lam TH. Chat-based instant messaging support integrated with brief intervention for smoking cessation: a community-based, pragmatic, cluster-randomized controlled trial. The Lancet Digital Health. 2019 Aug 1;1(4):e183-e92. Available from: doi:10.1016/S2589-7500(19)30082-2
  8. Luk TT, Wong SW, Lee JJ, Chan SSC, Lam TH, Wang MP. Exploring community smokers’ perspectives for developing a chat-based smoking cessation intervention delivered through mobile instant messaging: a qualitative study. JMIR mHealth and uHealth. 2019 Jan 31;7(1):e11954. Available from: doi:10.2196/11954
  9. Luk TT, Wang MP, Shen C, Wan A, Chau PH, Oliffe J, Viswanath K, Chan SSC, Lam TH. Short version of the Smartphone Addiction Scale in Chinese adults: psychometric properties, sociodemographic and health behavioral correlates. Journal of Behavioral Addictions. 2018 Dec 1;7(4): 1157–65. Available from: doi:10.1556/2006.7.2018.105
  10. Luk TT, Zhao SZ, Wu Y, Wong JY, Wang MP, Lam TH. Prevalence and determinants of SARS-CoV-2 vaccine hesitancy: a population-based survey in Hong Kong. Vaccine 2021 June16;39(27):3602-7. Available from: doi:10.1016/j.vaccine.2021.05.036
2023-Now Associate Editor, Nicotine & Tobacco Research
2023-Now Associate Editor for Health Psychology, Frontiers in Psychology
  • Co-opt member, Board of Directors, Pi Iota At-large Chapter, Sigma Theta Tau International Honor Society of Nursing
  • Member, International Network on Brief Interventions for Alcohol & Other Drugs
  • Member, Society for Nicotine & Tobacco Research
Year Scholarship/ Award Institution, Country
2022 Faculty Outstanding Research Output Award The University of Hong Kong, Hong Kong SAR
2022 Faculty Knowledge Exchange Award The University of Hong Kong, Hong Kong SAR
2019 Pi Iota Chapter Scholarship Sigma Theta Tau International Honor Society of Nursing
2019 SRNT Travel Award Society for Research on Nicotine & Tobacco, USA
2019 YS and Christabel Lung Postgraduate Scholarship The University of Hong Kong, Hong Kong SAR
2016 HKU Foundation Postgraduate Fellowship The University of Hong Kong, Hong Kong SAR