Organic milk contains "fewer fats" than the traditional full fat variety sold in supermarkets, say scientists at Newcastle University. The researchers analysed 22 unnamed organic and traditional brands of full fat milk and published their findings in the journal of Dairy Science. They concluded that the levels of polyunsaturated fatty acids - the "healthy fats" credited with boosting the heart and body -  were up to 60 per cent higher in organic milk.

Lead researcher Gillan Butler said: "We were surprised to see obvious differences in the conventional brands, with the more expensive ones not necessarily the better.

"Brands which promote their suppliers as wholesome and grazing on fresh pastures actually sold milk that appeared to be from very intensive farms with very low reliance on grass ... The reputable retailers weren't necessarily better than the cheaper shops."

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