http://www.nutritionandmetabolism.com/content/3/1/33
"Methodology
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Equivalent glycemic load (EGL): a method for quantifying the glycemic responses elicited by low carbohydrate foods
Published 24 August 2006
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"Background
Decreased postprandial glucose concentrations and diets with a low glycemic load (GL) are associated with reduced risk for cardiovascular disease [1,2], diabetes [3,4] and, perhaps, some forms of cancer [5,6]. In addition, generally, low carbohydrate [7-9] or low GL diets [10,11] result in greater weight loss than high carbohydrate diets over periods of 3–6 months and have a favorable effect on triglyceride and HDL cholesterol [12]. Food manufacturers have responded to the demand for low glycemic products by replacing sugars and starch in conventional foods with ingredients such as sugar alcohols, oligo- and polysaccharides, or glycerin. However, it is not known how to quantify the glycemic impact of low-carbohydrate foods accurately."