If you vape, you inhale a lot of harmful substances. These can damage your heart and lungs. Vaping and Electronic Cigarette Toxicity Overview and Recommendations (Project VECTOR) Intrepid Lab Vaping may be worse than cigarettes for mitochondrial health. In vitro studies (preliminary data from Dr. Ben Bikman's lab) suggest e cigarette aerosols pose significant risks to mitochondria, increasing reactive oxygen species and Toxicity, Chemistry, and Public Health Relevance of Emerging Nicotine Analog Vapes, Pods, and Pouches Chemical Research in Toxicology Science & Tech Spotlight: E cigarettes U.S. GAO What are the symptoms of vaping illness? Doctors warn about e cigarettes