While youth vaping rates have increased in recent years, most middle and high school students don't vape or smoke and very few vape or smoke daily, finds a study led by researchers at NYU School of Global Public Health. The study, published this month in the journal Nicotine & Tobacco Research, finds that over 80 percent of youth do not use any tobacco and over 86 percent don't vape—and among the minority who do vape, most are not regular users. In addition, the study reveals that most youth who are vaping are also current or former smokers.