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 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 How do nicotine free e cigarettes affect blood vessels? Cardiologists establish how e cigarettes damage the brain, blood vessels and lungs EurekAlert! E cigarettes linked to increased arterial stiffness, blood pressure and heart rate in humans ERS European Respiratory Society Vaping Worse for Heart Than Cigarettes? MedPage Today