The growing ‘obesity epidemic’ in the Western world is of particular concern for women of childbearing age. Both short- and long-term effects are associated with obesity in pregnancy for both the mother and her offspring. The nine chapters of this book are organized according to the natural course of the association between obesity and pregnancy. The book commences with an examination of the association between obesity and general maternal health during pregnancy and in nonpregnancy. The book then addresses the complications of obesity in pregnancy, screening and treatment of diabetes, weight optimization and weight gain during pregnancy, bariatric surgery and the impact on pregnancy outcome, appropriate antenatal care, considerations for labor and delivery, postnatal care, and finally, the association between maternal obesity and long-term sequelae to the offspring. The book includes thought-provoking discussion between the Editor and other authors together with multiple choice questions – a feature in all Clinical Insights books – facilitating continued learning for established professionals and providing a useful learning tool for those seeking deeper insight into these topics.