In this resource, we provide some context on vaping, and explore why women vape during pregnancy and postpartum and how you might start conversations with women around vaping and harm reduction. There are a number of reasons why women vape during pregnancy and postpartum. The reasons for use can differ depending upon whether women are vaping nicotine or cannabis (two common substances that are vaped), trying to quit smoking cigarettes, or if they are pregnant or postpartum.