will smoking 3 cigarettes a day hurt you Am I safe 2 to day?" Causes of Smoking - Philadelphia

Pregnancy risks : Higher chances of miscarriage, ectopic pregnancy, preterm birth, and low birth weight

Kim and colleagues explained

The study found that participants who had used e-cigarettes in the past were 21 percent more likely to develop a respiratory disease, and those who were current e-cigarette users had a 43 percent increased risk

Fix BV, Hyland A, OConnor RJ, et al

Adverse Experience Reports of Seizures in Youth and Young Adult Electronic Nicotine Delivery Systems Users

Support for the study was provided by the Empire Clinical Research Investigator Program (ECRIP) from the New York State Health Department