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. Photos Show Vaping Lung Damage Like Blisters and Lung Collapse Business Insider Vaping May Be More Dangerous Than Cigarette Smoking, Studies Show University Hospitals Vaping is often seen as a less harmful alternative to smoking, but since it is still relatively new, there is no way to study the long term effects. Both vaping and smoking irritate As e cigarette use grows, more research needed on long term effects of vaping American Heart Association