Harmful Effects of Vaping Chart Health Edco Health effects of electronic cigarettes Wikipedia Scripps Health E cigarettes remain the most commonly used tobacco product among middle and high school students in the United States, according to the Instagram E cigarettes contain hazardous substances, addictive and harmful Vaping is often marketed as a safer alternative to smoking, but many vape products contain nicotine, harmful chemicals, and heavy metals that can harm developing brains and lungs. New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking