'This is an excellent book that rigorously and thoughtfully argues that sex hormones still matter today. Although 'gene talk' has currently become an important discourse to conceptualise biological life, Celia Roberts convincingly shows how hormones still function as important scientific, cultural and political resources for answering persistent questions about sex, gender and the body. Bridging two distinct fields of research - feminist theories of the body and science and technology studies - Messengers of Sex provides new, critical tools in order to think through how technoscientific discourses are interwoven into women's and men's lives.' Nelly Oudshoorn, Professor of Technology Dynamics and Health Care, University of Twente, The Netherlands

'What is the relationship between hormones and sex, between the biological and the social, and between sex and gender? In this engagingly written book Roberts develops an elegant and complex - yet entirely accessible - argument that deserves to command the attention of theorists working in history, philosophy, science and technology studies, cultural studies, anthropology, sociology and feminist theory. This is one of a handful of truly exceptional recent books to emerge from informed and responsible interdisciplinary research.' Professor Moira Gatens, Research Professor, University of Sydney