Vaping May Be More Dangerous Than Cigarette Smoking, Studies Show University Hospitals Smoking versus Vaping E Cigarettes (Vapes) Smoking and Tobacco Use CDC 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 Just How Harmful Is Vaping? More Evidence Is Emerging. The New York Times