Vaping isn't harmless. Early nicotine use can harm brain development, affect how nerve cells work, and increase the risk of addiction. Young people who vape are 4x more likely to start smoking Urban Recovery 5 Vaping Facts You Need to Know Johns Hopkins Medicine Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times While vaping is not risk free, it is less harmful than tobacco Our World in Data Smokers Who Vape More Likely To Quit Or Cut Back Study Argues Powers Health