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 The evidence keeps piling up: e cigarettes are definitely safer than smoking Science The Guardian e Cigarettes Safety Not Yet Proven CANSA The Cancer Association of South Africa CANSA The Cancer Association of South Africa To use or not to use electronic cigarettes? Reasons for use, stopping use and their behavioural sequelae among Mexicans who smoke Tobacco Control