Wed, Jul-17-02, 10:41
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Forum Founder
Posts: 19,572
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Plan: Atkins/PP/BFL
Stats: 400/223/200
BF:37%/17%/12%
Progress: 89%
Location: Ottawa, ON
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Re: Evolution, Diet and Health--Eaton
Quote:
Evolution, Diet and Health
S. Boyd Eaton, MD
.......
Total fat intake, especially of serum-cholesterol-raising saturated and trans fatty acids, must have been greatly below current American and European levels; cholesterol intake would have been minimal. Within the polyunsaturated fatty acid [PUFA] category, partition between the omega 6 and omega 3 (w-6 and w-3) families would have been reasonably equal or skewed slightly towards the w-3s. Polyunsaturated fatty acids from plant sources are predominantly, if not exclusively, 18-carbon or less in chain length; linoleic acid (LA, C18:2, w-6) and a-linolenic acid (ALA, C18:3, w-3) are typical. Accordingly, dietary intake of the longer chain C20 and C22 PUFAs such as arachidonic acid (AA, C20:4, w-6) and docosahexaenoic acid (DHA, C22:6, w-3) would have been low. (Eaton, 1998)
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Eaton seem to have a mission of painting Paleo ancestors with a low-fat, fruit and vegetable dietary tendanceis, just like Ornish. Notice that his reference for this claim is his own "study" in 1998. That "study" originally appeared in the New England Journal of Medicine, 1985 with a table under a title of "possible" food composition. Those possibiliteis were calculated based on a couple of modern day forager sociteis, all tropical.
What these scientists fail to realize is in the paleo era, fruits and vegetables were hard to find, and were seasonal treats, not in constant supply.
They also ignore the Eskimo societeis, were there's nothing to eat but fat and meat.
Wa'il
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