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WALK down any street in America and you’ll see the effects of the “obesity epidemic”. Two-thirds of adults, more than 130 million people, are now considered overweight, and nearly half of these are classified as obese. Those who are overweight by 45 kilograms or more are the fastest-growing group of the overweight in the US. Accompanying these skyrocketing figures are increases in diabetes, heart problems and deaths.

In print and on the airwaves there are numerous stories about how fast food, large portions, sedentary lifestyles and poverty are playing big parts in weight gain, while government bodies desperately throw together…

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