E cigarettes are not a healthier alternative to cigarettes. They contain nicotine and many harmful ingredients that can cause cancer and heart disease. Since these products are relatively new, we don't know all E cigarettes a tool to reduce inequalities in smoking? UCL Institute of Epidemiology and Health Care Blog Cigarette to e cigarette switch improves wheeze, dual use does not People who smoke or vape at higher risk for COVID 19 The really interesting thing we found was that vaping may also encourage people who don't even want to stop smoking, to eventually quit Dr Caitlin Notley University of East Anglia