At least one third of Australians have been unsuccessful at maintaining their weights within healthy ranges.

Obesity is a major risk factor for type 2 diabetes, and it is estimated that more than 20 million Americans are currently diabetic, one third of whom do not realise they have the disease.

Losing weight is hard. Fad diets promising quick success without effort don't work. The truth is that no herb, vitamin or special food will magically melt away the kilograms. But ...