The differences were not weighted by population size, based on the assumption that differences in the distribution of resources matter regardless of the size of the population.

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There are also huge differences in population density across the country, with the population per square kilometre ranging from nine in Eilean Siar (the Western Isles) and the Highlands to 3, 395 in Glasgow.

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He said the differences from one population to another "cannot be accounted for either by genetic make-up or environmental influences".

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DeCode will search for obesity genes by looking through a population of 70, 000 Icelanders and checking for differences in their DNA. Genes that obese people have in common will be pinpointed within the 3.1 billion letters of DNA code found in nearly every human cell.

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People who bang on about innate differences should remember that variation within subgroups in the population is usually bigger than the variation between subgroups.

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This simple analysis reveals striking differences between the rich and most of the rest of the population.

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Ofsted said the inspections were being carried out to find out why there were differences in standards between local authorities with similar demographics, such as population and levels of deprivation.

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PPIC, lies in racial and ethnic differences: California's Latinos, who make up 35% of the population, and blacks (around 7%) are much more likely to be overweight than California's non-Hispanic whites (45%) or Asians (12%).

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