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E-cigs may up teen smoking

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Washington, Nov 9: According to a US study, Teenagers who use e-cigarettes on daily basis are more likely to become frequent and heavy cigarette smokers.

Nearly one-third of teens in the US use e-cigarettes as a smoking cessation aid. But in recent years, scientists are anaylysing whether e-cigarettes help smokers quit or act as a gateway to tobacco smoking, Xinhua news agency reported.

The new study, published in the US journal JAMA, examined over 3,000 15-year-old students in Los Angeles County twice, during the fall 2014 and spring 2015 semesters, determining how often they had vaped or smoked in the previous 30 days.

It concluded the prevalence of vaping and smoking was low.

But of those who were frequent vapers at the beginning of the study — defined by as having vaped three or more days in the past month — 11.6 per cent smoked at least one day a month while 19.9 per cent became frequent smokers six months later.

On the other hand, those who never vaped at the beginning of the study, only 0.9 per cent were occasional smokers while 0.7 per cent became frequent smokers six months later.

“In this study of adolescents, vaping more frequently was associated with a higher risk of more frequent and heavy smoking six months later,” Adam Leventhal from the University of Southern California and colleagues informed in their paper.

“The transition from vaping to smoking may warrant particular attention in tobacco control policy,” the paper stated.

However, other experts lamented that the study cannot prove there is a causal link between vaping and smoking.

“This study is investigating the gateway hypothesis. In practice, it is almost impossible to properly test this hypothesis,” Paul Aveyard of the University of Oxford said in a statement.

Wefornews Bureau

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