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The epidemic of obesity and overweight poses a major challenge to the prevention of chronic noncommunicable diseases throughout the world. In some developing countries it presents a double burden alongside enduring problems of undernutrition.

Current IOTF estimates suggest that at least 1.1 billion adults are overweight including 312 million who are obese. The prevalence of obesity has doubled or even risen threefold in less than two decades, while in children this is rising at an even faster rate in some regions of Europe to levels of up to 36% in parts of Italy and elsewhere.

The comparative burden of disease due to raised body mass index is among the top five leading risk factors in both developed and low mortality developing countries. When viewed in conjunction with the burden of raised cholesterol and hypertension, these components of the metabolic syndrome form the major cause of mortality and …