Human sexuality involves sexual attraction to another person, which for the most part is to the opposite sex (heterosexuality), some to the same sex (homosexuality) or some having both (bisexuality) or not being attracted to anyone in a sexual manner (asexuality). Human sexuality is determined by many factors, like cultural, political, legal and philosophical aspects of life, but also morality, ethics, theology, spirituality and religion. Sexuality is as old as mankind and interest in sexual activity is very much related to the onset of puberty and the period of schooling. In this book, we have gathered papers from around the world in order to discuss issues of sexuality from an international perspective.

Adolescence is the critical period or rather process in human development, where the individual leaves the dependency of childhood and enters a period in which dramatic changes occur, eventually resulting in what society identifies as adulthood. It is a complex developmental time involving sociological, psychological and physiological issues that starts with puberty and ends sometime in the third decade of life with central nervous system maturation (parents would want this period to be much quicker and shorter). The goal of adolescence is to develop an autonomous adult, who is capable of functioning at intellectual, sexual, and vocational levels acceptable to society. Prevention and management of health problems in children and adolescents can prevent considerable morbidity in adults. Working with adolescents is difficult, frustrating and very rewarding at the same time. In this book, we have gathered international research to show you a picture of health issues in adolescence and during the school period of human development.