Top 5 favorite pro vaping pro harm reduction studies. There are tens of thousands of them, but there are my five favorite most compelling studies done on the topic of nicotine vaping for tobacco Vaping is not harmless. A new study from Johns Hopkins Medicine reveals that e cigarettes significantly increase the risk of COPD and high blood pressure. Our own Dr. Todd Hoopman shares firsthand accounts National Emphysema Foundation E cigarettes and Vaping Just As Bad On Lung Health As Cigarettes E Cigarette use linked to COPD and hypertension in large study 5 ways that vaping can damage your body