Cohort Studyhigh evidence
Transitions in tobacco product use involving combustible cigarettes, heated tobacco products and electronic cigarettes among 7 million South Korean adults: a prospective cohort study.
Tobacco control·September 30, 2026·PMID 42816366
Why it mattersUnderstanding how HTPs and ECs influence smoking trajectories is critical for clinicians advising patients on tobacco cessation. The finding that most dual users revert to combustible cigarettes, and that complete tobacco cessation is less common among poly-users, challenges assumptions that these products facilitate harm reduction.
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