This book provides an up-to-date discussion on diverse and contemporary topics on sexuality and sexual behaviour. This book aims to develop an understanding of psychosexual issues related to gender and sexual orientation, organic and non-organic sexual dysfunctions, technology and sex and relational aspects. As such, the author's contributions provide a diverse array of core areas in sexology exploring biological psychology and sex; trans and non-binary individuals' experiences of their sexualities; psychosexual interventions for older adults; compassion-based mindfulness interventions in supporting psychosexual difficulties; sexual dysfunction and substance use; chemsex; and the mechanisms of cybersex and the attitudes and perception towards kink and BDSM. This book further examines how culture and religiosity affect sexual function. Together, these chapters embrace both theoretical and practical applications of sexology to healthcare practice. Advancements in sexology offers a varied selection of key issues within this field, making this one of the first books in sexology to incorporate empirical research. As experts in their field of investigation, the authors include UK NHS practitioners, health psychologists, and renowned academics. This book is suited to anyone interested in the field of sexology, including healthcare providers, academics, students and keen novices.