Hormonal birth control is taken by millions of women around the world every day. Yet until recently we knew very little about how the Pill affects the female body, because research was conducted almost exclusively on men. In her trailblazing book, Dr Sarah Hill uses the latest science to reveal how the Pill is changing women and the world, for better and worse. She puts the power back in your hands to make smarter, more informed choices about your health and your hormones.