Evidence update on the cancer risk of vaping e cigarettes: A systematic review While vaping is not risk free, it is less harmful than tobacco Our World in Data Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN Vaping: The Health Risks and How to Quit HelpGuide.org Marijuana and Vaping: Shadowy Past, Dangerous Present The New York Times