Is happiness catching? Are your friends making you fat? Can your sibling make you smart? Is wealth contagious? Where is true love found? Does free will exist?

A brilliantly original and effortlessly engaging exploration of the amazing power of social networks, and the ways they shape our lives. Using exciting discoveries in mathematics, genetics, psychology and sociology, pre-eminent social scientists Nicholas Christakis and James Fowler explain how our connections - our friends, their friends, and even their friends' friends - have an astonishing power to influence everything, from what we eat to who we sleep with, and even our basic health. Intriguing, entertaining and revelatory, CONNECTED will change the way people think about every aspect of their lives.