Live experiment part 4: pure erythritol

(Alec) #5

T+120, and, drum roll, 4.4.

Eh? What’s going on there? Well that puts the cat amongst the pidgeons. Not what I was expecting. That is a significant move. So it throws my provisional result into serious doubt. Bugger, that’s not what I wanted. Bloody science! :rofl::rofl:

I think for this one I will do a further reading at T+150 to see what it does.

(Alec) #6

T+150, it keeps going down! Not quite sure what to make of that. Might need to do some more testing.

Anyway, that’s enough testing for today.

(Ron) #7

I might suspect that at T60 you had an ever so mild increase in BG. Enough to prompt an insulin release, but since insulin cannot exactly regulate itself to directly correlate to an exact level, it has overloaded a slightly higher level than needed thus causing the lower number of BG flowing in the stream. :thinking:

(Alec) #8

That sounds like a sensible interpretation, albeit one that I don’t like much, as it means erythritol is insulogenic for me as well. :cry:. I think I might repeat this one to see if the same happens. Thanks for the input.

(Alec) #9

It’s interesting your comment about insulin being a blunt dose mechanism. That explains why I got a similar reaction to both 50g and 5g of the stevia/erythritol mix. Does it always pulse with the same dose, and then wait to see what levels of BG result?

(Ron) #10

Although there is always a low level of insulin secreted by the pancreas, the amount secreted into the blood increases as the blood glucose rises. Similarly, as blood glucose falls, the amount of insulin secreted by the pancreatic islets goes down yet I don’t imagine it is so precise as to match number to number.

(Todd Gamel) #11

I would categorize that as a pretty small insulin response, or at least a small fluctuation in your blood glucose. Especially since your blood glucose prior to taking the sweetener as actually higher than it was 120 minutes after consuming the sweetener. The range in blood glucose seems pretty tight and there could be other factors that have influenced your readings. Essentially though, at 90 minutes, your blood glucose was equal to or less than your reading prior to your ingesting the erythritol.

4.7 mmol/L = 84 (prior to erythritol)
4.9 mmol/L = 88 (30 minutes later)
5.0 mmol/L = 90 (60 minutes later)
4.8 mmol/L = 86 (90 minutes later)
4.4 mmol/L = 80 (120 minutes later)
4.2 mmol/L = 76 (150 minutes later)

Having said all of that, 6 grams is equal to what? It looks about like 1 – 2 tablespoons, but it is had to see in the picture. I wish there was a good home meter that would actually monitor insulin in the blood, that would be an awesome tool for us diabteics.

(Alec) #12

Thanks for your thoughts. And you are right, the changes are not high, they are quite subtle.

I think your conversions are slightly off. 5.0 = 90.

6g = 0.212oz

(Mrs. Parmesan Cheese) #13

I am loving your live experiments, thank you for sharing them.

Might I make a suggestion for another experiment? I have read numerous times that just thinking about food will create an insulin response. I’d be curious to see if there is any truth to that.

ETA maybe think of deferent types of foods. First bacon, then eggs, then potato chips etc


When your blood glucose went down how did you feel? Did you feel hypo at all

(Alec) #15

No, not at all. Quite normal.

Normal BG AFAIK is 3.5-5.5, so I was still well within normal range.

(Alec) #16

I will give that a shot when I’ve nailed this sweetener thing. I have a few other ideas on BG testing as well. If people like you tell me it’s interesting and useful I will keep posting results. :grinning::+1:

(What The Fast?!) #17

I’ve heard Jason Fung say that sweeteners can cause an insulin response even if you don’t see a change in blood sugar. He was speaking specifically of Stevia, but I imagine it’s applicable for all sweeteners. I just downloaded Ali Miller’s podcast about non caloric sweeteners.
I also made the decision to eliminate them but that’s mainly because I want to get rid of all variables to figure what the eff is going on and why I haven’t lost weight.

(Alec) #18

This is indeed what I am testing here. The theory is that erythritol should not raise BG (although it did raise mine a bit), and if the sweetener causes an insulin response, then BG will go down. This is exactly what I saw on this test at T+120 and T+150, which to me looks like a pretty delayed response. Does that indicate IR or something else, I am not sure. But it does suggest that this sweetener is insulogenic for me. :weary:

(karen) #19

Two things.

  1. Thank you for all those stabs! Awesome to have someone doing such diligent N=1 and sharing it.

  2. When was your last meal before you started the experiment? Have you considered doing an EF until your blood glucose is low and stable and then trying the experiment? I’m wondering if your body might still have been processing residual glucose when you started.

(Take time to stop and eat the bacon) #20

Hey, Alec! Couple of questions: first, how did you come to settle on the 6 g amounts for testing? Second, what is the accuracy of your meter? Third, how many times do you repeat each test?

I ask because (1) dose might affect response, (2) some people have said their meters are accurate only to within 20%, and all your readings on this test fall within that margin of error, and (3) repetitions would add power to the result.

Thank you for undertaking this effort; it’s fascinating.

(Alec) #21

Good thinking. My previous meal was eggs Benedict at 9am, and I started this testing at 12.30pm. So 3.5hr gap. I am not T2D and I think my IR has significantly reduced during the past year on fasting/keto, so I think any residual effect from the meal would have gone. But to be fair I don’t know that, I am guessing. I will add fasting to my list of tests.

  1. The 6g was my normal “dose” that I have on my raspberries.
  2. I don’t know, and I have listed monitor testing on my list of tests I am going to perform
  3. At the moment I don’t repeat, they are all single tests. I am going to repeat this test, as the results seem strange to me.

All good thinking. I now have a list of tests to do!! I try to do 2 tests each weekend, but as they each need 2hrs some time away from a meal, this does limit things.

But I am having fun here, so it’s no dramas doing it. And the pricks don’t hurt me. Hardly feel them!! :grinning:

Thanks for everyone’s feedback and ideas.

(Duncan Kerridge) #22

Have you done a control - testing over those time periods without eating anything to see what your natural variability is?

(Ron) #23

In reference to @PaulL comment.

(Alec) #24

This is now 6 years old, so although some of the points made in here are valid, I am expecting/assuming the technology to have come along a bit in that 6 years. The focus in this article is on absolute accuracy, and I am not that fussed with absolute accuracy. What I am concerned about though is relative accuracy/consistency. That’s what matters to me. I don’t really care whether I start at 4.5 or 5.5. What I care about is moving up or down from the starting point, and thus relative accuracy/consistency is important.

I am going to test my monitor in various ways for consistency, and we’ll see how that goes. What I am going to test is:

  1. Same finger, same drop of blood, 3 tests one after the other, no time gaps.
  2. Different fingers, same hand, 3 tests, no time gaps
  3. Different hands, 2 tests per hand, no time gaps
  4. Same finger, 3 tests, 5 minutes apart

Anybody got any other ideas for testing monitor consistency? After all that testing, I think my fingers will be wanting a rest! :joy::joy::crazy_face::see_no_evil: