Judging by the food court scene, it's no wonder NZ has an obesity problem. The people carrying those big plates of food were big and they had large kids in tow.

Martin Johnston talks to Andrew Dickson about how the weight-loss industry exploits the anxieties of the obese.

The extra food needed to feed overweight and obese people is the same as feeding an extra billion mouths, researchers say.

A person's height and body mass should be used to measure a nation's wealth and wellbeing, says a researcher. Professor Les Oxley