According to the International Tobacco Control Policy Evaluation Program Survey Report, from 2009-2014, the proportion of smokers who know about e-cigarettes has increased from 29% to 60%, and the number of smokers who actively use vape continues to increase.
In October 2020, Cochrane, an international authoritative evidence-based medical academic organization, published a review of its latest research, which proved in 50 professional studies conducted on more than 10,000 adult smokers worldwide that e-cigarettes have the effect of aiding smoking cessation, and with the use of nicotine replacement therapy, such as switching to nicotine gum or nicotine-free e-cigarettes, more people use nicotine e-cigarettes to aid smoking cessation for at least than six months.

“This new review on e-cigarettes suggests that for many smokers, e-cigarettes are an effective tool to assist in quitting. It is also important to note that over a period of up to two years, none of these studies found any evidence of harm from e-cigarette use.” said the director of the Tobacco Dependence Research Group at Queen Mary University of London.
Last year, an independent study at University College London also noted that e-cigarettes helped 50,000 to 70,000 users in the U.K. move away from traditional cigarettes each year.
At the same time, the U.K. Department of Public Health also said that the British public has many misconceptions about nicotine, with less than 10 percent of adults knowing that most of the health risks of smoking are not caused by nicotine and that e-cigarettes are far less harmful than traditional cigarettes.

The UK government website has published a report from the UK Department of Public Health, which pointed out that due to the reduction of more than 70 known cancer-causing ingredients in traditional cigarettes, the risk of cancer in e-smokers is much lower – the potential risk of cancer in e-smokers is less than 0.5% of traditional smokers.
The UK Department of Public Health also sees a potential relationship between the prevalence of e-cigarette products and the decline in cigarette smoking. In 2017, about 2.9 million adults in the UK used e-cigarettes, about 6% of the total population, but the number of people using both e-cigarettes and traditional cigarettes has stopped growing in the last two years, and more and more smokers are switching from traditional cigarettes to e-cigarettes altogether.

This shows that the electronic cigarette to the old smokers to get rid of cigarettes there is some help. Moreover, in recent years, various national departments are also actively regulating the development of the electronic cigarette industry, I believe that in the regulatory departments and enterprises of the overall industry under the common control, will let the electronic cigarette play the role.