There is no precise prescription for dietary fatty acid content because there is no precise science to drive it. In general, people don't tolerate high amounts of polyunsaturated fats (PUFAs) as part of a high fat diet, which is why we recommend focusing one's intake on monounsaturates and saturates. Despite high intakes of saturated fats on well-formulated ketogenic diet, their absolute content in blood lipids actually tend to go down, which indicates that they (saturated fats) are being preferentially burned.
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