Vaping substantially less harmful than smoking, largest review of its kind finds King's College London Cigarette smokers who try to quit often end up vaping and smoking WashU Medicine Vaping as good as Chantix to help quit smoking: JAMA study STAT Smoking vs Vaping Which is Worse? Smoking: 1. 7,000+ harmful chemicals 2. Causes lung cancer, COPD, heart blockages, strokes 3. Long term, progressive, and deadly Vaping: 1. Marketed as "safer" but misleading Smoking vs. Vaping Weed: Know the Facts Hackensack Meridian Health