Since its introduction into western markets around 2006-2007, e-cigarettes have seen a large uptake in consumer interest, with some 2.6 million British adults using the product, according to a May 2015 report by public health charity, Action on Smoking and Health (ASH). In that same report, almost all were smokers or ex-smokers, looking to reduce their tobacco intake.
In the report, "Nicotine without smoke," the doctors suggest the most effective method to quit tobacco is through nicotine replacement therapy (NRT) such as gum and patches, combined with support from health professionals. However, they suggest e-cigarettes seem to be a much more popular method among smokers who are looking to quit, compared to NRT.
One of the report's main objectives is to find ways to achieve a "tobacco-free society" and look at any risks surrounding non-tobacco nicotine products. When looking at e-cigarettes, physicians' state there is "no evidence" that the gadget triggers the renormalization of smoking, adding that it wasn't a "gateway to smoking".