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. All E Cigarettes Emit Harmful Chemicals, but Some Emit More Than Others Berkeley Lab Berkeley Lab News Center How Switching to E Cigarettes After Smoking Cessation Affects Lung Cancer Risk The evidence keeps piling up: e cigarettes are definitely safer than smoking Science The Guardian Can Vaping Cause Lung Cancer or Other Diseases? Essentia Health The Truths Behind Vaping: Information for Youth and Teens USU