In our time, when medicine and biotechnology are increasingly invading the areas of conception, childbirth and caring for children, it is more important than ever to understand how these processes arose and developed in our species during evolution. One of the world’s best specialists in evolutionary biology, Robert Martin, brilliantly coped with this task, writing a thorough and fascinating book in which you can find answers to both the most serious and practical questions, and sometimes curious ones. How to avoid postpartum depression? Is it possible to reduce the incidence of breast cancer? Why do men need nipples? Does a woman's brain shrink during pregnancy? What are the biological reasons for masturbation? And even in the age of universal sexual education, the most sophisticated reader will learn something surprising and unexpected for himself.