Nicotine products in any form, whether from cigarettes, vaping or chewing tobacco, pass into a mother's bloodstream and through the placenta to the growing baby. Quitting nicotine is hard for many people, Why women vape during pregnancy & postpartum: conversations starters for your practice SURE Study finds vaping in pregnancy harms both mothers and babies Smoking and vaping during pregnancy increase the risk of preterm birth support is available to help you quit. Smoking during pregnancy is the biggest modifiable risk factor for preterm birth. Quitting