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 Blog What you need to know about the health risks of vaping Main Line Health Vaping vs. Smoking Which is Safer for Your Lungs? Think vaping is the "healthier" option? Think again. Both smoking and vaping come with serious risks to your lung health, 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