Analysis suggests e cigarette use may be linked to lower rates of smoking 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 Infographic: Electronic Cigarettes, What is the bottom line? Youth living in vapefree homes much less likely to use e cigs Stanton Glantz blog Vaping: The Facts Health Improvement Commission While vaping is not risk free, it is less harmful than tobacco Our World in Data