When People Both Vape and Smoke, They Don't Swap Cigarettes for E Cigs Teens Who Vape Are More Likely to Start Smoking SPH Vaping May Be More Dangerous Than Cigarette Smoking, Studies Show University Hospitals 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 Many young people who vape did not smoke cigarettes before they started vaping. But young people who vape are more likely to start smoking cigarettes than those who never vape. For help