Kelly Osbourne is still critical of her body despite losing about weight.

Forcing the hefty to pay more is not only an indignity, it's manifestly unfair.

In a unique natural experiment, researchers have observed how a nation that lost an average of 5kg per head over five years contributed to a halving of the death rate.

Genes play major role in deciding whether we're a couch potato or active bunny, a new study shows.

The rise in the number of overweight children in Western countries may be as much to do with their genes as their diet and exercise levels.

The world's first airline to charge passengers by weight - rather than a normal fare structure - says the policy helps raise obesity awareness and improve public health.

Obesity may be caused by an imbalance of gases in the body, rather than over-eating or a lack of exercise, researchers claim.

A health expert says new research on the dangers of sitting should be a wake-up call - and trading in your office chair for a pricey ergonomic model is unlikely to help.

Slimmers turning to low-fat foods could be piling on the pounds.

Researchers have a controversial explanation for rising obesity levels in women - they are not doing enough housework.

Carl's Jr operator Andy Puzder says he is proud to bring good quality food and service to poorer areas - and at 63 he still eats plenty of his firm's burgers.

Nearly one in five New Zealanders over the age of 15 have a blood disorder that precedes Type 2 diabetes, a finding described as "alarming" by experts.

Manufacturers' measurements do not take into account the caloric value of fibre.

The battle against the bulge should start while you're still a toddler, according to an obesity study in Auckland which has spanned nearly two decades.

Children's sport would be almost non-existent without support from multinational fast food companies, an academic says.

This week in America, one of the contenders most likely to be the 2016 Republican presidential candidate defiantly ate a doughnut on late night television; it was a glazed and jelly-filled two-fingered salute to his critics.

Paleo diets have gained substantial ground in the past two years as more nutritionists and health gurus turn a sceptical eye to the benefits of a grain-based diet, which many of us eat.

It takes just six weeks for the long-term benefits of a diet overhaul to be seen, a University of Auckland study has found.

Children as young as 9 are joining weight-loss programmes in a trend industry experts say will grow as children lead more sedentary lives.

A new study into the health effects of sugar by the University of Otago aims to disentangle what has been a confused and controversial issue, its author says.

A new weight loss gadget sucks food straight out of the stomach.

The rising level of obesity, alongside diabetes, cardiovascular disease and other related diseases, is predicted to slow down or reverse the decline in mortality seen in most Western countries.

Many festive folks will have one eye on the difference Christmas indulgence makes to their waistlines.

Recipes by TV chefs including Jamie Oliver and Nigella Lawson are "less healthy" than ready meals, researchers said.

The number of clinically overweight children aged under 10 being seen by a Tauranga dietitian has increased fourfold in two years.