From health tracking to diet apps to biohacking, technology is changing how we relate to our material, embodied selves. Drawing from a range of disciplines and case studies, this volume looks at what makes these health and genetic technologies unique and explores the representation, communication and internalization of health knowledge. Showcasing how power and inequality are reflected and reproduced by these technologies, discourses and practices, this book will be a go-to resource for scholars in science and technology studies as well as those who study the intersection of race, gender, socio-economic status, sexuality and health.