Vaping and E Cigarettes ADAPP Quitting smoking in favour of e cigarettes leads to rapid improvement in cardiovascular health Prevention Observatory of the Montreal Heart Institute E cigarettes: Facts, stats and regulations Vaping has become common, but it's important to know what you're inhaling. Many e cigarettes contain nicotine, heavy metals like nickel and lead, and chemicals that can harm your lungs and overall health. How E Cigarettes Affect Your Body E cigarettes