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Five interesting facts about E-cigrerettes

Five interesting facts about E-cigrerettes

We can’t say that vaping is absolutely not harmful. The thing is vaping is not risk free but is far less harmful than smoking. Our advice remains that people who smoke are better to switch completely to vaping but if you have never been a smoker, don’t start to vape.



This blog, published to coincide with PHE's Latest Independent evidence report, looks at some of the most common misconceptions around e-cigarettes and provides the facts.



Vape Cons compared to smoking

Only one in three adults in England knows that vaping is far less harmful than smoking. Yet in 2018 the US National Academies of Sciences, Engineering and Medicine (NASEM) found that the available evidence suggests e-cigarettes are far less harmful than conventional smoking.

Public Health England’s 2015 independent evidence report, concluded that: “While vaping may not be 100% safe, most of the chemicals causing smoking-related disease are absent and the chemicals which are present pose limited danger.”

More research is needed into the relative harms of e-cigarettes. Last month PHE commissioned the final and most ambitious report in the current series of e-cigarette updates. A team that combines authors of PHE’s previous reports with other international experts are starting work on a wide range of systematic reviews, including one on safety, to permit our most authoritative assessment in 2022.

Harms of using excessive nicotine


Four out of 10 smokers and ex-smokers wrongly think nicotine causes most of the smoking-related cancers, when evidence shows nicotine actually carries minimal risk of harm to health. Although nicotine is the reason people become addicted to smoking, it is the thousands of other chemicals contained in cigarette smoke that cause almost all of the harm.



Vaping trends and youth smoking 


Our latest report found no evidence to support concern that e-cigarettes are increasing youth smoking. UK surveys show that young people are experimenting with e-cigarettes, but Regular use is rare and confined almost entirely to those who already smoke. Meanwhile, smoking rates among young people in the UK continue to decline.



Concerns that e-cigarettes might be “renormalizing smoking” were addressed in a 2019 study. PHE continues to monitor the trends in vaping and smoking among young people. We have recently commissioned research on the role of flavorings in youth vaping and in adult switching.






Role of Vaping in heart disease


A controversial study that reported that vapers had the same risk of heart disease as smokers was recently withdrawn by the journal as it did not take into consideration that almost all the vapers involved were current or former smokers.



A better understanding of the effect of e-cigarettes on the heart is beginning to emerge. A randomized control trial that measured the vascular effects of smokers switching to vaping was published in December with encouraging results. Those who switched to e-cigarettes completely experienced the largest improvement in their vascular health, getting close to the healthy “control”. Larger studies with longer follow up will provide greater confidence.



Quitting smoking


A major UK NIHR funded clinical trial was published in February 2019. Involving nearly 900 participants, it found that in Local Stop Smoking Services, a standard e-cigarette was twice as effective at helping smokers to quit compared with the quitters’ choice of combination nicotine replacement therapy (NRT).



A separate study from UCL found that e-cigarettes helped an additional 50-70,000 smokers in England to quit in a single year.



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