'Cool, fun factor' motivates e-cigarette use in teens

July 18, 2016, Canadian Medical Association Journal

The novelty factor of e-cigarettes is the key motivation for their use by adolescents, according to a study published in CMAJ (Canadian Medical Association Journal).

"While e-cigarettes are frequently used as devices for in , we found most in our survey (including 47.8% of those who recently smoked cigarettes) were motivated by the "cool/fun/something new" features of e-cigarettes," writes Dr. Michael Khoury and coauthors. The research was conducted while Khoury was a pediatric cardiology resident at The Hospital for Sick Children (SickKids) and the University of Toronto, Toronto, Ontario, Canada. He is now a pediatric cardiology resident at Stollery Children's Hospital, Edmonton, Alberta, Canada.

The study involved 2367 students aged 14-15 years enrolled in grade 9 in the Niagara region of Ontario, Canada.

Previous studies have found increasing rates of e-cigarette use by adolescents in the United States and Canada, and some have found higher rates of e-cigarette use in adolescents exposed to tobacco. In Canada, e-cigarette use is now more common than cigarette use by teenagers.

Researchers from SickKids and Heart Niagara in Niagara Falls, Ontario, sought to understand the motivation, frequency and other factors for use of e-cigarettes by teens who were part of a school-based program that screens for cardiovascular risk factors. Of the 2367 teens who responded to at least 1 question in the smoking section of the survey, nearly 70% (1599) had heard about e-cigarettes; almost a quarter of them (380) had learned about them from a display or a sign in a store. Over 10% (238) had used e-cigarettes.

E-cigarette use was more common among male respondents who were already using cigarettes and other tobacco products, and in those whose family or friends smoked. Smoking cessation did not appear to be a driver of e-cigarette use.

"Use of e-cigarettes was [also] associated with lower self-identified health level, greater stress level and a lower estimated household income, which suggests that e-cigarette use may have some key associations that may help to identify adolescents at risk," write the authors.

They acknowledge that, owing to the study's cross-sectional design, the findings represet association and cannot prove causation, and that since the study was limited to one region in Canada the findings are not necessarily generalisable.

The authors call for the continued development of strict regulations to reduce the use of e-cigarettes among .

In a related editorial, Dr. Matthew Stanbrook, Deputy Editor, CMAJ, and a respirologist, highlights as concerning the study's novel finding that e-cigarette use was highest among the most vulnerable youth, as reflected by poor health, high stress or low socioeconomic status. He also expresses concern over the study's confirmation that most teens were not substituting e-cigarettes for cigarettes; instead, the odds of e-cigarette use were 12-fold higher in youth who also smoked cigarettes (i.e., "dual users").

Dr. Stanbrook calls for expanded public health programs that apply anti-tobacco principles to , government prohibition of the addition of flavourings, and restrictions on e-cigarette advertising.

Explore further: Public health benefits of e-cigarette use tend to outweigh the harms, new study says

More information: Canadian Medical Association Journal, www.cmaj.ca/lookup/doi/10.1503/cmaj.151169

Canadian Medical Association Journal, www.cmaj.ca/lookup/doi/10.1503/cmaj.160728

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