They take around an hour and a half to go up, if you consider that quick. Now if I ate a sugary thing or drink orange juice (which I don't) then yes they shoot up fast, like within 15 mins and come down swiftly to around 6.0 again. In the afternoon my BG's take around 3 - 4 hours to come down. My fbg's have been between 8.0 - 9.0. The hypos, I really have put that behind me to be honest. So you don't think I'm diabetic?
At least I have intrigued you. Ha!
The truth is, I just don't know. If I had a graph from back in the day, it would be very similar, including a small spike before the bigger spike on the third spike which I conclude is the carb. But every time I had a spike that high, I would end up in hypo. Your fasting levels are in normal. So, not in diabetes. But only hba1c levels can determine.
If you eat every three hours (ish) maybe before that, it will stop going lower, or your liver is helping and it is only when the insulin overshoot is too much for the high BG levels (with carbs) and the steep dive into normal levels, do you go hypoglycaemic.
But low carb seems to be working.
It is only tests, starting with an extended oral glucose tolerance test.
And only specialist endocrinologist can get them done.
I do hope that makes sense.