Juul can continue selling e cigarettes as FDA says vaping benefits outweigh risks PBS News 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. Q&A: Is vaping as addictive as cigarettes? MultiCare Vitals Vaping Safety, Smoking, Dangers, Pros, Cons, Debate, E cigarettes, & Tobacco Britannica