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Evolutionary Aspects of Diet

old message Evolutionary Aspects of Diet (Fish Oil) Darrell Miller 11/10/05


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Date: November 10, 2005 09:24 AM
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Subject: Evolutionary Aspects of Diet (Fish Oil)

Evolutionary Aspects of Diet

Studies of hunter-gatherer societies indicate that man evolved on a diet that was low in saturated fat (wild game, seeds, berries, fish), and the amounts of n-3 and n6 fatty acids were guite equal (1:1). Over the past 10,000 years the development of agriculture has triggered changes in the food supply, especially during the last 100-150 years. This has led to increases in saturated fat from grain-fed cattle, increases in trans-fatty acids from the hydrogenation of vegetable oils, and an enormous increase in n-6 fatty acids (about 30g/day) due to the production of oils from vegetable seeds such as corn and safflower. There have also been large increases in meat consumption and large decreases in fish consumption. Even cultivated vegetables contain fewer n-3 fatty acids than do plants in the wild.



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