Dangerous delays: The failure to regulate e cigarettes What Does Vaping Do to Your Lungs? Johns Hopkins Medicine Sky's Ashish Joshi reports on vaping possibly being linked to cancer. University College London analysed cheek cells in vapers and smokers and found similar DNA changes in both. While e cigarettes, or vapes, may contain fewer chemicals than regular cigarettes, they are still NOT safe. E cigarettes contain harmful chemicals. 99% of e cigarettes contain nicotine, making them highly addictive. Visit https: t.co 1y8cZxtgFQ to The evidence is clear: Young E cigarette users suffer from respiratory symptoms American Lung Association