Lindy West provides an overview of Breasts: A Natural and Unnatural History by Florence Williams:
She learns that it’s the breast’s permeability that make it such an evolutionary powerhouse (lots and lots of estrogen receptors help human puberty occur at the optimal time; nutrient-rich breast milk makes for giant brains)—but that same permeability is also, partially, what causes one in eight women to develop breast cancer. Our breasts make us great but they also make us vulnerable, and you can’t help but come away from Williams’ book feeling a bit helpless.
The Dish 