Session 19: An understanding of pregnancy and Women's Health and how it relates to substance use disorder is essential for anyone treating substance use disorder. While much of substance use disorder presentation is similar for both women and men, an understanding of the differences can help to improve treatment outcomes. In addition, pregnancy and the postpartum period are a time when a thorough understanding of the risks and also of the benefits of excellent care can completely change the course of substance use disorder. Even for providers who don't treat pregnant women, being able to discuss these outcomes with their female patients will enhance outcomes. We will discuss the genetic components of substance use disorder, the differences in how women and men present with substance disorder, and treatment of substance use disorder during pregnancy. The pregnancy portion of the talk will include information on the importance of the postpartum period, information about neonatal opioid withdrawal, and a discussion of involvement of child protective services.