More than a billion people worldwide are overweight and over 600 million are obese.

We live in an obesogenic environment in which it is much easier to get fat than to stay fit. In our book Fat Planet we explain exactly why so many people are piling on the pounds and how they can best safeguard their health and happiness through simple, easily implemented lifestyle changes – that do not involve going on a diet.

Many believe losing weight is merely a matter of moving more and eating less. But they are wrong.

Obesity is the net result of dramatic changes to our environment, food supply, and surging stress levels. We explore each of these components intimately to provide clarity into one of the century’s biggest challenges to public health.