Katherin Wisner, M.D., M.S., is a general and child psychiatrist and a pioneer in the field of perinatal psychiatry. Her research has advanced our understanding of the natural history of mood disorders across childbearing, benefit-harm decision-making for pharmacotherapy during pregnancy and lactation, and the pharmacokinetics of medications across pregnancy and lactation. She is internationally recognized as an expert in the treatment of mood disorders during pregnancy and the postpartum period. She founded the Marce of North America Society for perinatal mental health in the USA. Dr. Wisner has received over $22 million from the National Institutes of Health and has published 280 peer-reviewed publications and 23 book chapters.