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. Health Risks of Secondhand Smoke and Aerosols Factsheet US EPA Vaping Versus Smoking: Are Electronic Cigarettes the Savior? Arteriosclerosis, Thrombosis, and Vascular Biology Vaping: A Dangerous Epidemic The Catalyst Thousands of Unknown Chemicals Found in E Cigarettes Respiratory Therapy