E cigarettes Linked to Increased Arterial Stiffness, Blood Pressure, Heart Rate RT Vaping isn't harmless. Nicotine reaches your brain in seconds, raises heart rate and blood pressure, and can alter brain development especially in teens. Most flavored e cigarettes contain nicotine, making addiction easy and Dangers associated with e cigs Poison Control The W.H.O. estimates over 100 million people now vape globally, and most believe they're making the safer choice. But safer than smoking and safe are not the same thing. Vaping still delivers