I understand that but I'm not understanding the reasoning behind the diet surely a normal functioning pancreas will respond accordingly regardless of what you've eaten in the days, weeks before. Isn't that the point? Sorry I'm not saying you're wrong just trying to understand it..Eating normal carbs before the OGTT doesn't mean just the day before, it means for 2 or 3 or 4 days before. Doing that, your pancreas has plenty of time to adjust. Then at the test it gets hit by a large shot of glucose, usually Lucozade, to see what the reaction to that is. A diabetic will react because the pancreas can't cope with the extra glucose in one shot. The actual test is a fasting one, so before the Lucozade there is no food in your system.
The OGTT is a test that shows how high your bg is 2 hours after ingesting a set amount of glucose. Nothing misleading about that.
An OGTT is a diagnostic tool used by the NHS, under standard conditions (one of these conditions is that the patient has been eating a 'normal' diet containing carbs). Unless the standard conditions are met, the test results are useless because they will not conform to the NHS's diagnostic standards.
For this reason, I have declined an OGTT for the last three years.
And because I have declined the test, and because my HbA1c is controlled and below the level the NHS considers to be diabetic, my doctor will not diagnose me as Type 2.
With the NHS, you play the game, or you don't. There are consequences to each choice.
I have found that my phase 1 is totally shot, but my phase 2 kicks in an I peak at ~50minutes andI have returned to at/below fasting levels well within the 2hr of the OGTTThe pancreas has a 2 phase approach to dealing the glucose. Phase 1 is a dump of insulin to deal with the peak and this is a learnt behaviour from previous meals. Phase 2 is the normal release to bring you down into normality and continually process what is being released by the digestive system. So with t2 the phase 1 insulin cannot handle the peak pushing you too high (this will happen to a norm if they eat too much unexpectedly] and then the phase 2 insulin is ignore until levels are really high due to insulin resistance.
Now low carving works to reduce the phase 1 and 2 requirements. Not that lchf can also make it look like insulin resistance due to the learning nature of the pancreas
The pancreas has a 2 phase approach to dealing the glucose. Phase 1 is a dump of insulin to deal with the peak and this is a learnt behaviour from previous meals. Phase 2 is the normal release to bring you down into normality and continually process what is being released by the digestive system. So with t2 the phase 1 insulin cannot handle the peak pushing you too high (this will happen to a norm if they eat too much unexpectedly] and then the phase 2 insulin is ignore until levels are really high due to insulin resistance.
Now low carving works to reduce the phase 1 and 2 requirements. Not that lchf can also make it look like insulin resistance due to the learning nature of the pancreas
I have found that my phase 1 is totally shot, but my phase 2 kicks in an I peak at ~50minutes andI have returned to at/below fasting levels well within the 2hr of the OGTT
BTW neither my GP or hospital have warned me to "carb up" in the 2-3 days prior to the OGTT (Luckily I knew)
From my perspective I get a rise of 3 from 30g or 300g. I find my digestive system controls the release in combination with the rate of absorption. However I do see initial peaks higher or lower depending on the carb composition and my previous meals
There is a additional thing that they look for - you should never go over 11.4 (or around there) is you are not diabetic.I was under the impression that as long as your phase two insulin response cleared the raised glucose levels within two hours you could not be labelled diabetic? Clearly not the case.
From your prospective then, someone unaccustomed to high carb meals could have taught the pancreas not to respond with insulin which would result in high blood glucose readings? So your saying low carbing reduces the requirement for insulin (my understanding) and not low carbing reduces the amount of insulin produced?
In my case they would never know!There is a additional thing that they look for - you should never go over 11.4 (or around there) is you are not diabetic.
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