Wow, I did not expect that. Yesterday I moved quite a lot .15000 steps, That is about three times of my daily average. And I ate late because I was on a workshop in the evening and was not able to eat beforehand.
To make things easy and reproducible I chose to open a can of french precooked lentils with sausages (I live close to the french border and sometime buy food there – uhm and wine…).
Conveniently they put the nutrition values for one person on the label: 33g of carbs (see NB below).
Here are the results from the Freestyle Libre Flash Glucose Meter: now that looks very nice: a BG rise of only 18 mg/dl from 34g of carbs.
NB: in some countries (like US) the total carb value does contain the fiber amount as well. I do not know how the french are doing it but even if I subtract fiber from total carbs – for 23g of carbs this is still a gentle rise.
UPDATE: I did a retest and had a much less rise in BG. I will keep an eye on this.
Another big surprise. I regularly use Xylitol (Xucker) instead of table sugar because it has low or no impact on blood glucose. Or is said to have. But there seems to be some “xylitol side effects”.
Today with my morning coffee and with the help of my freestyle libre I checked the influence of four heaped teaspoons of Xylitol in my morning coffee (together with one teaspon of low fat cream). And I nearly fell off my chair: it raised my BG from 123 to 171 mg/dl (fingerpick, freestyle 146)!
What kind of xylitol side effects are that?
I will redo this experiment tomorrow. Maybe the lowfat cream had some negative influence. I hope so.
Rats, so I have to wait another hour for my BG to go down before I can have my breakfast…
So I tried that out: I ate a bowl of dinkel (spelt) spaghetti at a local restaurant (Vapiano) with arrabiata sauce and parmesan. And a small coke light. I guess as the pasta portion was quite large there were 80g of carbs involved.
And I went walking.
I started the meal at 17:10 and went on the road at 17:40. I walked at a normal pace. Not strolling and not “nordic walking” style.
According to my Freestyle Libre blood glucose had its peak at 18:15 with 119mg/dl and fell slightly.
After one and a half hours (!) at 19:20 I finished my walk and sat down comfy in my chair at home. As soon as I rested, my blood sugar started to climb again.
Frustrated by that I decided to leave my comfy chair and see what happens. At 19:50 I went out for another half hour and my blood sugar went down again.
Now something strange happened: I was tired and went to bed at 21:50. And during my sleep BS climbed again with its peak of 155 mg/dl at appx 23:10. What? Six hours after eating a lot of carbs?
I CAN walk away blood sugar. With a bowl of spaghetti my blood sugar would have been otherwise much higher (definitvely above 180 mg/dl) after one hour
it takes a long time to walk away the glucose. Over 1,5h of walking time after each meal is nothing I can do on a regular basis
I have no explanation of the peak six hours later. Maybe some rebound effect or something else. Maybe I check if I can repeat that
BG values are higher than logged as the Freestyle Libre was appx. 20% lower on the first day of sensor usage than my fingerpick readings.