Re: Tell me what is wrong with this "study."

On Fri, 08 Jul 2005 13:22:23 -0400, Dr. Zarkov wrote in
<news:16ydnVezm5_4K1PfRVn-gA@xxxxxxx> on sci.med.nutrition :

> [Sorry, I meant to say to include some omega-3 fatty acids. It is 32.6%
> C18:2 (omega-6), but with no omega-3.

By the way, what do you make of this article, saying that "Over the past
100-150 y there has been an enormous increase in the consumption of n-6
fatty acids due to the increased intake of vegetable oils from corn,
sunflower seeds, safflower seeds, cottonseed, and soybeans. Today, in
Western diets, the ratio of n-6 to n-3 fatty acids ranges from
{approx}20-30:1 instead of the traditional range of 1-2:1."...?


http://www.ajcn.org/cgi/content/abstract/70/3/560S
American Journal of Clinical Nutrition, Vol. 70, No. 3, 560S-569S,
September 1999
© 1999 American Society for Clinical Nutrition
Supplements
Essential fatty acids in health and chronic disease1,2
Artemis P Simopoulos

1 From The Center for Genetics, Nutrition and Health, Washington, DC.

Human beings evolved consuming a diet that contained about equal amounts of
n-3 and n-6 essential fatty acids. Over the past 100-150 y there has been
an enormous increase in the consumption of n-6 fatty acids due to the
increased intake of vegetable oils from corn, sunflower seeds, safflower
seeds, cottonseed, and soybeans. Today, in Western diets, the ratio of n-6
to n-3 fatty acids ranges from {approx}20-30:1 instead of the traditional
range of 1-2:1. Studies indicate that a high intake of n-6 fatty acids
shifts the physiologic state to one that is prothrombotic and
proaggregatory, characterized by increases in blood viscosity, vasospasm,
and vasoconstriction and decreases in bleeding time. n-3 Fatty acids,
however, have antiinflammatory, antithrombotic, antiarrhythmic,
hypolipidemic, and vasodilatory properties. These beneficial effects of n-3
fatty acids have been shown in the secondary prevention of coronary heart
disease, hypertension, type 2 diabetes, and, in some patients with renal
disease, rheumatoid arthritis, ulcerative colitis, Crohn disease, and
chronic obstructive pulmonary disease. Most of the studies were carried out
with fish oils [eicosapentaenoic acid (EPA) and docosahexaenoic acid
(DHA)]. However, {alpha}-linolenic acid , found in green leafy vegetables,
flaxseed, rapeseed, and walnuts, desaturates and elongates in the human
body to EPA and DHA and by itself may have beneficial effects in health and
in the control of chronic diseases.
[...]
.

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