This Edited Volume, Fertility Preservation - Theory and Practice Experience, is a collection of reviewed and relevant research chapters that offer a comprehensive overview of recent developments in the field of gynecology. The book comprises single chapters authored by various researchers and edited by experts in obstetrics and gynecology research. All chapters are complete in themselves but united under a common research study topic. This publication aims to provide a thorough overview of the latest research by international authors and to open new research avenues for further novel developments.