Ireland fifth out of 85 countries for percentage of people who vape, WHO survey finds Many young people who vape have never smoked cigarettes. Research shows that young people who vape are more likely to go on to smoke cigarettes compared to those who don't vape. For Vaping: How popular are e cigarettes? Vaping on the rise in U.S., especially among young people Pew Research Center There Are Now an Estimated 82 Million Vapers Worldwide