Vegatable glicerine is 100% carbohydrate...that is what is spiking your blood sugar. Here is the link. Carbohydrate Content Of Vegetable Glycerin | LIVESTRONG.COM
As you know carbs are bad for diabetics. No more vg for you. Hope this clears this up.
This is true, VG is processed as a carb, but shouldn't contribute to BG spikes. Not being one to take other people's word for gospel, I've experimented with several different ratios from 100%pg to 100%vg and have noticed a number of different effects... but the only thing that has consistently caused my sugar to jump is the nicotine level. Weird, I know.
Also, it is a pretty common misconception that carbs are "bad" for diabetics. While it's true that too many carbs turn my blood into battery acid... well, just ask my awesome and beautiful wife what happens when I don't get ENOUGH carbs...
How did I trick that woman into marrying me?
Also, just did some math, here. 1 teaspoon = about 5ml. 1 teaspoon of VG is about 5g of Carbs. I go through let's say 8ml a day. So, I would need to DRINK 3 teaspoons of straight VG to even have to think about correcting with insulin.
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