Published in the journal Pediatrics, the study titled, “Smoking Intention and Progression From E-Cigarette Use to Cigarette Smoking,” claimed that e-cigarette use was associated with a higher risk of future smoking, among teens who had no prior intention of taking up smoking.
The researchers looked at data from 2014 to 2016 of 8,000 U.S. adolescents, aged 12 to 17, who had never smoked. This was collected via the Population Assessment of Tobacco and Health (PATH) study, NIH and the FDA. According to the researchers, the analysed data suggested that adolescents who vaped and had no prior intention to smoke, were four times more likely to do so.
“The interaction between smoking intention and ever using e-cigarettes was significant (aOR = 0.34, 95% CI = 0.18–0.64, P < .01). Among adolescents who had expressed intention to smoke conventional cigarettes at wave 2, the odds of cigarette smoking at wave 3 did not significantly differ for e-cigarette users and never e-cigarette users (aOR = 1.57; 95% CI 0.94–2.63; P = .08). Among adolescents who had no intention to smoke at wave 2, e-cigarette users, compared with never e-cigarette users, had >4 times the odds of cigarette smoking (aOR = 4.62; 95% CI 2.87–7.42; P < .0001).”
No gateway effect observed in real life
Meanwhile, countries which have endorsed the use of e-cigs for smoking cessation, such as the UK and New Zealand, are not only reporting low smoking rates, but also not experiencing increases in teen vaping rates. Supporting reports from such countries and in line with previous studies looking into these patterns, a recent review titled, “Does the gateway theory justify a ban on nicotine vaping in Australia?,” dismissed the Gateway Theory once again.
Contradicting the findings of the current study, review authors Colin Mendelsohn and Wayne Hall had pointed out that a more plausible explanation as to why young people who vape are more likely to smoke, are personality factors. This means that those teens who vape are risk-takers and are therefore also more likely to smoke, drink alcohol, use cannabis and other substances, as well as have unprotected sex. This argument has already been emphasized by other experts in multiple studies.
The key findings from Mendelsohn’s and Hall’s review were as follows:
- “Smoking usually precedes vaping. At least 70-85% of teen smokers try vaping after having already started smoking.
- Most vaping by adolescents is experimental and infrequent
- Regular vaping is rare among non-smokers. Regular vaping by non-smokers is generally 1% or less in Australian and international surveys.
- Many adolescent vapers use flavourings only and do not use nicotine. Nicotine addiction is rare in vapers who don’t smoke. In the US, <4% of non-smoking youth who vape have symptoms of nicotine dependence.
- Some adolescents use vaping to quit smoking.
- Youth smoking rates have declined rapidly in the UK and US since the introduction of vaping, making it very unlikely that it is increasing youth smoking. It is more likely that vaping is diverting some high-risk teens away from smoking to a safer alternative”
