Festival of Ideas 2013 - Eating Ourselves to Death - Session 08

Close to a billion of the world's population are overweight while 300 million are clinically defined as obese. As we head towards the next century, experts predict a rapid increase in these figures - particularly in industrialized countries. So, what can be done to curb the world's expanding waist-line? And is fast-food really to blame or are we just big-boned?