E Cigarettes (Vapes) Smoking and Tobacco Use CDC Teenagers who vape sweet flavoured e cigarettes more likely to stick with habit, study claims The Independent The Independent Is Vaping Worse Than Smoking? St. Vincent's Medical Center 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