ArticleBMJ open2025
Prevalence and dual use of cigarettes, heated tobacco products and electronic cigarettes among young adults in Japan: findings from a 2019 Nationwide Survey.
Article in BMJ open, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Heated tobacco product-derived aerosol extract impairs gingival epithelial barrier function via CXADR downregulation.Toxicology reports · 2026Article
- Factors associated with smoking and risky drinking among university students in Japan.Environmental health and preventive medicine · 2026Article
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Authors and funding
9 authors.
Funding
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Abstract
objectivesThis study aims to estimate the prevalence and dual use of cigarettes, heated tobacco products (HTPs) and electronic cigarettes (e-cigarettes) among individuals aged 18-24 in Japan.
designThis cross-sectional study involved a door-to-door survey administered by trained interviewers using a structured questionnaire.
settingIndividuals aged 18-24 residing in 220 areas within 10 ordinance-designated cities (Sapporo, Sendai, Saitama, Chiba, Yokohama, Kawasaki, Sagamihara, Nagoya, Osaka and Fukuoka) as well as Tokyo's 23 wards in Japan in 2019 were included.
participantsA total of 1738/5500 individuals were included in the analysis, with participants evenly distributed by sex, age and residential area. PRIMARY AND SECONDARY OUTCOME MEASURES: Cigarette, HTP and e-cigarette use was assessed.
resultsThe weighted prevalence of the current use of cigarettes, HTPs and e-cigarettes accounted for 10.1% (95% CI 8.7, 11.5), 5.1% (95% CI 4.1, 6.1) and 1.8% (95% CI 1.2, 2.4), respectively. Approximately 68.2% of the people who used HTPs at the time were dual users of both HTPs and cigarettes. There was a significant gap in tobacco product use between individuals aged 20-24 and those aged 18-19, with this difference remaining after adjusting for covariates.
conclusionsIn 2019, cigarettes were the most used tobacco-related product among young adults in Japan. Smoking initiation appears to notably increase at age 20 when smoking becomes legal in Japan. The prevalence of HTP use among young adults in Japan is notably higher than in other countries.
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