Led by the UK Cochrane Centre, the review focused on testing two randomized, but has also examined data from 11 cohort studies that compared people who were already trying stop with and without e-cigarettes. Overall, the data "suggest that electronic cigarettes may be useful [for] stop smoking and reduce cigarette consumption," says lead author and specialist Hayden McRobbie behavior of the Wolfson Institute of Preventive Medicine in London.
After 1 year, trial participants who used the devices were more than twice as likely (4% against 9%) to quit successfully compared to those who used a placebo spray without nicotine. Another 36% of users e-cigarettes have been able to reduce the number of traditional cigarettes they smoked by 50% or more. But 28% of placebo users also reduced their cigarette consumption by at least 50%, suggesting that some can leave the e-cigarette can be derived from the simple fact of "smoke" it.
Because there are so few studies of how e-cigarettes work as a tool to leave the examination of confidence levels are low and estimates for efficacy may change. But still, McRobbie said he would recommend e-cigarettes to a friend or family member who was trying to stop smoking, and he thinks that health professionals should be more open to recommending the devices.
The Cochrane review looked for signs of severe adverse reactions to the therapy e-cigarette, but found none. This is certainly not to say that electronic cigarettes are completely harmless. "We do not yet know the long-term use of risk," said McRobbie. Previous analyzes of their vapors were found numerous toxic chemicals and heavy metals. These compounds are present in sufficiently large doses to cause long term health problems remains to be seen. But compared to the dangers of tobacco, "the effects on the real health are quite likely to be smaller because the e-cigarette vapor ... has fewer toxins in it," says Schick Suzaynn a biologist at the Centre research for the fight against smoking and education at the University of California, San Francisco.
of course, the safest thing to do is to avoid or otherwise-e-cigarettes altogether. But for those who are already addicted to nicotine, electronic cigarettes may be the lesser of two evils. "now, I want the debate can move on the best way that we can advise and support smokers who use these products to stop smoking completely as soon as possible, "said Ann McNeill, professor of tobacco dependence in national addiction Centre at King's College London, in an official statement. The Cochrane review called for further study, specifically comparing e-cigarettes with other methods of quitting, like the patch in terms of safety and efficiency. "We need more data to strengthen the evidence," said McRobbie.
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