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Does anyone have a link to an official description of the Total Available Glucose dose calculation system? @jack412 posted this link from Joslin which is slightly critical of the original (1996) version of TAG, but says it has been 'recently updated'.
http://blog.joslin.org/tag/total-available-glucose/
As stated it there anyway (by a 'hostile source') TAG is just saying bolus 50% for protein and 10% for fat, in addition to 100% for carbs. I know from my own experience that is not going to work. Protein conversion to carbs is variable, not fixed, and varies based on multiple factors - how much protein you eat, (independently) how much carbohydrate you eat, structural protein needs, maybe more. Protein conversion is anything from 60% (ultra rare) to 0% (common) in practice. And it is at least debatable whether any *net* conversion of fat to glucose occurs at all. Yes there is a reaction in lipolysis that liberates a glucose molecule, but arguably that glucose molecule needs to be recycled back into the process to keep lipolysis running and is not available for use. (I may be wrong on that). And dietary fat has been shown to lower insulin sensitivity, increasing insulin requirements for other nutrients in a variable way.
Not to mention the timing issues of protein and fat boluses.
But does anyone have a link to a more modern 'enhanced' version of TAG?
http://blog.joslin.org/tag/total-available-glucose/
As stated it there anyway (by a 'hostile source') TAG is just saying bolus 50% for protein and 10% for fat, in addition to 100% for carbs. I know from my own experience that is not going to work. Protein conversion to carbs is variable, not fixed, and varies based on multiple factors - how much protein you eat, (independently) how much carbohydrate you eat, structural protein needs, maybe more. Protein conversion is anything from 60% (ultra rare) to 0% (common) in practice. And it is at least debatable whether any *net* conversion of fat to glucose occurs at all. Yes there is a reaction in lipolysis that liberates a glucose molecule, but arguably that glucose molecule needs to be recycled back into the process to keep lipolysis running and is not available for use. (I may be wrong on that). And dietary fat has been shown to lower insulin sensitivity, increasing insulin requirements for other nutrients in a variable way.
Not to mention the timing issues of protein and fat boluses.
But does anyone have a link to a more modern 'enhanced' version of TAG?