E cigarettes: 'cancer risk close to zero' Bhekisisa Vaping and Electronic Cigarette Toxicity Overview and Recommendations (Project VECTOR) Intrepid Lab The Dangers of Vaping How E Cigarettes Affect Student Health What is e Cigarette and Associated Health Risks IntechOpen Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health. Health effects of electronic cigarettes Wikipedia