Our planet is in the grip of an obesity pandemic. More than a billion people worldwide are overweight, and more than 600 million are obese. We live in an obesogenic environment in which it is much easier to get fat than to stay fit. How has this come to be? Who is to blame? What can we do? In Fat Planet, Dr David Lewis and Dr Margaret Leitch examine the social and psychological causes of the obesity pandemic in order to answer these questions...