E cigarettes around 95% less harmful than tobacco estimates landmark review GOV.UK Dr. David Nutt of Imperial College London said that scientific evidence clearly shows e cigarettes and other less harmful alternatives are much safer than smoking and can support smoking cessation. Read the Scientists say the evidence is clear: E cigarettes beat patches and gum in helping smokers quit CED Clinic Electronic cigarettes use and 'dual use' among the youth in 75 countries: estimates from Global Youth Tobacco Surveys (20142019) Scientific Reports Experts question the evidence underpinning e cigarette recommendations E cigarettes: Mounting evidence shows the dangers of these new age devices School of Public Health