Did you know guys that you get plenty of GLA every day without knowing it? Forget the 2mg/day GLA you religiously get with your oatmeal! I bet you get 50mg or more everyday through food, so the 2mg/day and the spillover effect has to be revised! Here's a list of food containing GLA (GLA in mg for 100g of food): Lean beef : 13 avocado : 15 pine nuts: 52 peanuts: 38 brazilnuts: 17 turkey saussage: 13 Chicken, pork : 50 All kind of lean meat and probably fishes contain more than 10mg/100g! I'm sorry, there's something wrong with Dr. Sears' theory and his oatmeal. What's 2mg compared to 50mg/day? I'm sure even olive oil contains more than 10mg/100g

I've found other figures from another source. It's from a study that focussed on the effect of linseed on trouts. Trout GLA content without supplementation : 9.5 mg/100g Trout GLA contentn after supplementation : 29.5 mg/100g

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Hi Zonadept [quote:26717f2d6c] Did you know guys that you get plenty of GLA every day without knowing it? [/quote:26717f2d6c] I believe you mean linoleic acid which is an Omega 6 fatty acid and the building blocks for both good and bad eicosanoids?? [quote:26717f2d6c] Forget the 2mg/day GLA you religiously get with your oatmeal! I bet you get 50mg or more everyday through food, so the 2mg/day and the spillover effect has to be revised! [/quote:26717f2d6c] Please read the chapter in "Enter the Zone" entitled Eicosanoids--The Long Course. It is very enlightening!! There is an excellent chart that shows the metabolism of Omega 6 essential fatty acids into good and bad eicosanoids. Linoleic acid is found at the top of the chart and is present in most foods we eat, including the ones you have listed below. GLA is rarely found in food. GLA is found in borage oil, evening primrose oil, black currant oil and trace amounts are found in oatmeal. [quote:26717f2d6c] Here's a list of food containing GLA (GLA in mg for 100g of food): Lean beef : 13 avocado : 15 pine nuts: 52 peanuts: 38 brazilnuts: 17 turkey saussage: 13 Chicken, pork : 50 All kind of lean meat and probably fishes contain more than 10mg/100g! [/quote:26717f2d6c] The foods you have listed contain linoleic acid (18:2). [quote:26717f2d6c] I'm sorry, there's something wrong with Dr. Sears' theory and his oatmeal. What's 2mg compared to 50mg/day? [/quote:26717f2d6c] Since when did you become a biophysicist??? [quote:26717f2d6c] I'm sure even olive oil contains more than 10mg/100g [/quote:26717f2d6c] I think you better do more homework!! Here are some links just in case you do not own the book entitled "Enter the Zone". http://www.drsears.com/drsearspages...deicos.jsp http://www.wholefoods.com/healthinf...mega6.html "Omega-6 fatty acids are beneficial as well. The most healthful of the omega-6s are those that contain linoleic acid. These convert in the body to gamma linoleic acid (GLA) and ultimately to prostaglandins, hormonelike molecules that help regulate inflammation and blood pressure as well as heart, gastrointestinal, and kidney functions. Good dietary sources of omega-6 fatty acids include cereals, eggs, poultry, most vegetable oils, whole-grain breads, baked goods, and margarine". http://www.margarine.org.uk/pg_health3.htm "Polyunsaturates There are two different ‘families’ of polyunsaturates (PUFA), the n-6 (linoleic acid) series and the n-3 (alpha linolenic acid). Both have different functions in the body. n-6 (linoleic acid): dietary sources include: vegetable oils such as sunflower, safflower, corn and soya oils, fat spreads made from these, meats, nuts and seeds. Small amounts of n-6 PUFA are needed in the diet to provide essential fatty acids. At high intakes these fats may be linked to an increased risk of heart disease. The practical message is: eat small amounts of foods containing polyunsaturated fats. n-3 (alpha linolenic acid): dietary sources include: oil rich fish e.g. sardines, mackerel, salmon. These foods contain very long chain fatty acids which perform important biochemical functions in the body, including reducing the stickiness of blood. This is important in the end stages of heart disease, as fish oils can help prevent blood clots developing, and therefore have a protective role. The practical message is: aim to eat 1-2 servings of oily fish every week." The updated version is to take PGFO White Light

White Light, Indeed, I've studied biochemistry at the university. Do you really think I confused GLA and linoleic acid or linolenic acid? You know, White Light, you're incredible, one can show you evidence and you still wouldn't admit it. Now what, are you saying http://www.nutritiondata.com/nutrie...earch.html and http://www.nal.usda.gov/fnic/cgi-bi..._search.pl are lying?? In case you're not familiar with fatty acids, GLA is C18,3 n-6. Now, listen White Light, suppose all what I say is true, what will you say? First, do the search yourself on nutritiondata. Select c18,3 n-6 and see what it says! I really believe I made a discovery that will force Dr Sears to reconsider some of his chapters. As this discovery is has tremendous implication on the Zone diet, I would like Dr Sears himself to post himself.

By the way, if Dr Sears is a nice and honest man, he will accept he was wrong about the daily GLA intake and the oatmeal supplementation and thank me.

Sorry, I tried the links you suggested and couldn't find what you were writing about. Also, nothing about oatmeal appeared. Could you please clarify? -C.

I'm no real expert in this stuff and not a biochemist by any means, but I thought the GLA stuff was more about ratios and finding your individualized balance of GLA and EPA than how many total milligrams. And I thought the oatmeal thing (ie steel cut) was more about controling the insulin response more than about getting supllemental GLA. I thought the oatmeal thing was in there to provide a low insulin response source of GLA supplementation through the zone diet. It seems that the 2 mg amounts in oatmeal was to be used to affect (fine tune)your balance, but not about total amounts. Sure, maybe it is a drop in the bucket in the totals. Maybe using oatmeal is not the best way to fine tune, but it makes for a pretty good breakfast.

[quote:87c89ee229="zonadept"] I really believe I made a discovery that will force Dr Sears to reconsider some of his chapters. As this discovery is has tremendous implication on the Zone diet, I would like Dr Sears himself to post himself.[/quote:87c89ee229] To my knowledge Sears didn't address it much when Kurilla discussed it at length back in 1996. With respect to GLA in other foods: "Different sources also have different compostions of fatty acids other than GLA. The significance of the composition has been demonstrated to influence effects on eicosanoid production even when the amount of GLA is equal between different sources" [i:87c89ee229]Gamma-linolenic supplementation and arachidonophobia [/i:87c89ee229]by Michael Kurilla at www.zonehome.com Here's the study: Jenkins, D.K.; Mitchell, J.C.; Manku, M.S.; Horrobin, D.F. "Effects of different sources of gamma-linolenic acid on the formation of essential fatty acid and prostanoid metabolites" Med Sci Res 1988; 16: 525-526. GLA from evening primrose oil has been shown to result in much higher increases in DGLA derived eicosanoids to other GLA sources of the same amount. Thus GLA may be 'everywhere', but not all sources result in significant increases in DGLA. That being said, it is widely recognized that GLA for [i:87c89ee229]supplementation[/i:87c89ee229] purposes is limited to very few foods (ie evening primrose, borage, black currant seed oil). The only implication it has is what is considered an appropriate amount of supplementation? Sears feels it should be minimal, others argue for higher amounts given the amount of AA that is inherent in foods already. I don't think either side is necessarily wrong. With the calorie-restricted, low-fat nature of the Zone whereby desaturase of linoleic acid to GLA is greatly enhanced* and AA intake is minimized, minimal supplementation is needed. Since Sears can't possibly know what people are eating and whether they are getting GLA in their diet, the oatmeal is a general recommendation to provide the minimal amounts. Where fat intake or alcohol intake is higher, more GLA may be needed. *Food restriction raises D6D activity by 300% Horrobin, DF "Loss of delta-6-desaturase activity as a key factor in aging" Med Hypothesis 1981 Sep;7(9):1211-20

Hi Zonadept, [quote:1e88bf0939="zonadept"]By the way, if Dr Sears is a nice and honest man, he will accept he was wrong about the daily GLA intake and the oatmeal supplementation and thank me.[/quote:1e88bf0939] Your assumtions are all based on you being right and Sears being wrong. Truth is You are wrong Dr. Sears is right.(my independent research proved this) I would welcome a personal response from Dr. Sears but I can see your mind is already made up. And Dr. Sears would be simply confusing you with the facts. You remind me a lot of a previous poster here, Have you ever posted under another name by any chance ?? White Light.