Feted and fetishised, the breast is an evolutionary masterpiece. But in the modern world, the breast is changing. Breasts are getting bigger, developing earlier and attracting newfangled chemicals. Increasingly, the odds are stacked against us in the struggle against breast cancer - even among men. So what makes breasts so mercurial - and so vulnerable? As part of the research for this book, science journalist Florence Williams underwent tests on her own breasts and breast milk. She was shocked to learn that she was feeding her baby not just milk but also fire retardants and a whole host of other chemicals, all ingested throughout her life and stored in her breast tissue. At its heart, Breasts- a natural and unnatural history is the story of how our breasts went from being honed by the environment to being harmed by it; a revealing and at times alarming look at the way the changes in our environments, diets and lifestyles have altered our breasts, our health and, ultimately, the health of future generations. Accessible and entertaining - part biology, part anthropology and part medical journalism - Breasts is a wake-up call for all women.