Advanced e-cigarettes are marketed as a healthier alternative to traditional cigarettes and some research suggests they can help smokers quit, but the products may be too risky for some users.
A new study in The Lancet Medicine has found that some advanced e-cig brands are more likely to be addictive than traditional cigarettes.
More:The researchers surveyed more than 10,000 Swedish smokers aged 18 and older, including 6,000 who used e-cigs, as well as about 10,500 non-smokers.
The researchers found that while more than 60 percent of Swedish smokers used an e-liquid, they were twice as likely to have used e‑cigarettes in the past month compared to those who did not use e-liquids.
The results of the study are consistent with other research which shows e-tobacco use is associated with a higher risk of addiction and withdrawal.
E-cigarette users are more than twice as similar to non-users as they are to regular cigarette smokers, according to the study.
“There’s a link between the use of e-colas and addiction,” said lead author Anna Hänne, a research fellow at the Centre for Addiction and Mental Health in Stockholm.
“The more people use an e‑cigarette, the more likely they are going to relapse to cigarettes.”
“This link is a good sign because it suggests that there’s a real risk of withdrawal symptoms from the consumption of e‑liquiddes,” she said.
In recent years, the use and popularity of e cigs has grown dramatically in Europe, reaching a peak in the US and Australia in 2013, when the number of e cigarette users in the two countries surpassed 100 million.
The study was published in the journal Addiction.
The research team, from Lund University in Sweden, found that people who used an advanced e cigarette were four times more likely than non-user controls to be addicted to nicotine, according the researchers.
The report also found that e-juice users were more likely for the first time to smoke cigarettes and to be more dependent on them for their nicotine.
The majority of people who tried an advanced nicotine product reported they had stopped smoking traditional cigarettes in the 12 months before starting their use of an e cig, compared to a smaller minority of non-juicing smokers who did the same.
This is in contrast to other studies, which have found that nicotine use is relatively stable over time.
In a separate study published in The New England Journal of Medicine, researchers from the University of Texas in Austin found that the prevalence of nicotine dependence among people who switched from cigarettes to e-Cigs was comparable to the prevalence in people who stopped smoking conventional cigarettes.
Dr Häne said the results of this study, which was published earlier this year, were consistent with the findings of previous research, which showed that people use e cigs in a similar way to regular cigarettes, and that this makes the use-dependent nature of nicotine a risk factor for addiction.
Dr Jennifer O’Connor, the director of the Centre on Addiction and Substance Abuse at the University, said she was surprised by the findings.
“I’ve known people who have been using e-pipes for years and years and have quit smoking traditional cigarette cigarettes,” she told the BBC.
“These are the same people who smoke regular cigarettes and have stopped smoking them.”
It is not a coincidence that the people who are addicted to smoking cigarettes and are trying to quit smoking cigarettes are the people with the least exposure to the addictive properties of tobacco and nicotine.
“Dr O’Connell said that there was no evidence to suggest that people should use e cigarettes only for smoking cessation.”
This is an interesting study that supports the idea that the use or use of vaping products is a safer way of trying to kick the habit than smoking traditional or alternative cigarettes,” Dr O’Connor said.
Dr Ochsner said that people had been “talking about quitting” for years, and there was now a “strong body of evidence” to suggest it could be achieved.”
If you are in a situation where you are struggling with the consequences of smoking, you might be tempted to smoke another cigarette, but I don’t think you are getting the full benefit from the product, she said, adding that the nicotine in the e-Liquid was not addictive and that it might not cause you to become dependent on nicotine.
“A lot of people are smoking cigarettes because they have not had the opportunity to get to grips with the harmful effects of smoking.”