Johns Hopkins researchers find thousands of unknown chemicals in electronic cigarettes Hub We break down the key differences between traditional cigarettes and e cigarettescovering: 1 Their compositions and ingredients. 2 The health risks associated with both. 3 Nicotine levels and addiction potential. 4 The impact 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 Invited Commentary: Attendance and Absence as Markers of Health StatusThe Example of Active and Passive Cigarette Smoking