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A health study came to the defence of certain dietary fats last week, adding fuel to a scientific row over low-fat guidelines that have bedevilled dieters for nearly half-a- century.
The low-fat movement has not prevented a global epidemic of obesity linked to health concerns such as diabetes, heart attacks and stroke, said researchers who probed, for example, whether fat in special food ingredients such as olive oil and nuts pile on the pounds (make you gain weight).