Book excerpt: In this issue of Obstetrics and Gynecology Clinics of North America, guest editors Drs. Amanda J. Adeleye and A. Musa Zamah bring their considerable expertise to the topic of Reproductive Endocrinology and Infertility. Top experts discuss the clinical implications of research in areas such as preimplantation genetic testing, utilization of artificial intelligence, and fertility preservation, while also exploring important topics like racial disparity and the economics of fertility care. - Contains 11 practice-oriented topics including fertility and the microbiome; planned fertility preservation: counseling, patient utilization, and experience; leveraging artificial intelligence in fertility care; racial disparities in fertility care: POI/natural ovarian aging; and more. - Provides in-depth clinical reviews on reproductive endocrinology and infertility, offering actionable insights for clinical practice. - Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.