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Re: Glycemic Index question(to Pat)From: Pat (anonymous@obgyn.net)Mon, 27 May 2002 10:39:24 -0500 (CDT)
Okay, Rick's charts are good, and he does divide out the glucose measure from the white bread. It is not a glucose bread, but a glucose measure, for example, a liquid to drink that is exactly 50 g of carbs. It becomes a standard measure for tests. These were two different ways of testing/measruing the glucose index of foods, from his explanation above the list. There is controversy about the glycemic index. I think the key is to look for foods that have a high GI and try to avoid them. The Zone is probably one of the best resources for determining what is helpful and what is not. Here is what Rick says about it: <<The key is the "previously established base number." The numbers are meaningful only in relation to this base number and don't relate to the number of calories, portion size, or anything else. At first some scientists fed 50 grams of glucose to their test subjects. They saw that this amount of glucose raised their subjects' blood glucose to a certain level. They called that level 100, which became the base of the index. Then they tested their subjects with other foods. If, for example, one of those foods raised their test subjects' blood glucose level 70 percent as much on average as the glucose did, then they assigned an index of 70 to that food. And so on with other foods tested. That would be simple. However, many scientists found that their subjects hated to take 50 grams of glucose. They knew from experience of testing foods that if they used white bread as the base number instead, it was about 70 on the glucose index. So they were able to make another index with white bread as the base, setting it as 100, and feeding their subjects 50 grams of carbohydrates from white bread instead. Then, as they tested more foods they related them to white bread. Still later, when the relationship of glucose to white bread was firmly established, it didn't matter when the scientists preferred to use a glucose index even though they tested their subjects with white bread. So these two indexes came into general use. Unfortunately, many of the lay publications of the glycemic index fail to specify which one of the indexes they are talking about. I can understand why, because of all the questions I get asking me to explain myself. >>> There is an Excel chart mentioned on that page, and it is a very good chart to print up. Makes a great reference. Rick keeps up with this stuff, as he has diabetes. Here is the link: http://www.mendosa.com/gilists.htm
-- Pat Sonnenstuhl, ARNP, CNM, MS Balanced Eating Support http://home.attbi.com/~cnmpat/favlowcarbsites.htm http://home.attbi.com/~cnmpat/siteindex.htm PCOS Support http://www.midwivesofwa.org/pcos.htm http://www.midwivesofwa.org//pcosarticles.htm
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