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. Bongs vs. Vapes vs. Joints: Healthiest Cannabis? Vaping: not a safe alternative to smoking, new study suggests, and it may be more harmful to health than tobacco in normal cigarettes South China Morning Post Vaping Facts Patients & Visitors DHMC and Clinics Is There Any Safe Vape Smokers Believe Vaping Is At Least As Harmful As Smoking, University Vape Dangerous Than Cigarette