§SMOKE Nicotine and Tobacco Youth Cohort

The §SMOKE Cohort Study aims to improve understanding of tobacco and nicotine use among adolescents and young adults in Denmark. The study focuses on a rapidly changing nicotine landscape that includes cigarettes, e-cigarettes, nicotine pouches, heated tobacco products, and other nicotine products. The study is based on the hypothesis that tobacco and nicotine use during adolescence and young adulthood follows different developmental pathways and that individual characteristics, social influences, and environmental factors affect initiation, continued use, cessation, relapse, and switching between products. The study further hypothesizes that different patterns of tobacco and nicotine use are associated with differences in educational, health, and social outcomes. By following young people over time, the study seeks to improve understanding of how tobacco and nicotine use develops, which factors influence these behaviors, and what consequences may be associated with different patterns of use. The findings will contribute to evidence supporting tobacco and nicotine prevention efforts and public health policy for adolescents and young adults in Denmark.

Inclusion Criteria: * Aged 15 to 25 years at the time of baseline * Resident in Denmark * Participated in the 2026 §SMOKE survey Exclusion Criteria: * Not resident in Denmark at the time of baseline survey participation * Younger than 15 years or older than 25 years at baseline