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Tag: dual use

  • KMI Study Examines Lung Risks and Smoking Habits

    KMI Study Examines Lung Risks and Smoking Habits

    A large health data analysis by the Korea Medical Institute (KMI) examined the effects of traditional cigarettes, e-cigarettes, and dual use and their impact on higher rates of metabolic syndrome and declining lung function. The study, part of KMI’s “Health Big Data Series,” analyzed medical check-up data from about 3 million individuals screened at eight centers across South Korea and compared health outcomes by smoking type and cumulative exposure measured in pack-years, a metric defined by the National Cancer Institute.

    Among men, metabolic syndrome prevalence increased from 21.5% in non-smokers to 29.9% in current smokers, reaching 31.2% among conventional cigarette users and 30.8% among dual users. Among women, overall prevalence was 10.7% among non-smokers and 12.6% among current smokers. By smoking type, the rate reached 15.8% among conventional cigarette users and 12.1% among dual users.

    Risks also rose with cumulative exposure, climbing to 36% among men with more than 20 pack-years of smoking and 22% for women. Lung function impairment was recorded in 23.4% of men and 21.5% of women, rising sharply among heavy smokers. The study also found smoking patterns shifting, with the share of male lifetime non-smokers rising from 36.7% in 2022 to 39.7% in 2025, while e-cigarette-only use increased from 7.8% to 10%. Researchers noted the findings are based on anonymized screening data and may not fully represent the national population.

  • Cannabis Use Growing, Intertwined with Nicotine

    Cannabis Use Growing, Intertwined with Nicotine

    A new study published in Tobacco Induced Diseases finds that cannabis use—both vaping and smoking—has increased over time, with more young adults initiating use than quitting, and high levels of co-use with nicotine and tobacco products. Researchers from Columbia University Mailman School of Public Health report that simultaneous cannabis and e-cigarette use is especially common among young adults who vape nicotine, with similar rates observed across genders. The findings highlight that cannabis consumption is not only growing but increasingly intertwined with nicotine use.

    Analyzing data from the VapeScan longitudinal study of 372 adults in the New York City area between 2021 and 2024, researchers found cannabis users often consume multiple product types, including vapes, edibles, smoked products, CBD, and topicals. By the second year of follow-up, nearly 60% of participants reported cannabis use, with cannabis vaping and smoking both rising. Notably, 21% of participants were new cannabis vape or smoke users over the study period, while only 6% of earlier users quit, underscoring a net increase in use.

    The authors say the expanding variety of cannabis products, rising frequency of use, and widespread cannabis–nicotine co-use pose growing public health and regulatory challenges.