Diabetes in pregnancy is a critical and growing concern in modern obstetrics, with significant implications for both maternal and fetal health. As the prevalence of diabetes continues to rise globally, understanding and managing diabetes during pregnancy has become a cornerstone of antenatal care. Whether it is pre-existing type 1 or type 2 diabetes, or gestational diabetes that develops during pregnancy, effective management is essential to minimize complications and ensure the well-being of both mother and baby. This book aims to provide an in-depth, evidence-based resource for students looking to understand the complexities of diabetes as well as practitioners who are involved in the care of pregnant women with diabetes. It explains in simple language the pathophysiology, diagnosis, and management strategies for diabetes during pregnancy. It also addresses the long-term implications for both maternal health and offspring, as well as the evolving research that shapes current best practices.