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Continuous glucose monitors reveal variable glucose responses to the same meals

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Re: Continuous glucose monitors reveal variable glucose responses to the same meals

#61
post #46

Jessie Inchauspe [1] created a business (she's the "glucose goddess") and wrote books around the different blood sugar responses she and others have to meals, exercise, etc... I don't recall all the ideas, but here are the two I remember: Exercise before and/or after eating smooths out the blood sugar response to food. When eating a meal, it's better to eat high-fiber stuff first, then complex carbs, then protein, th…

Is the order salad, baked potato, steak, dessert?

Re: Continuous glucose monitors reveal variable glucose responses to the same meals

#62
post #59

Earlier quoted context omitted.

> I find that my blood glucose spikes much later than what is suggested. I'm a type 1 and my blood glucose can response can vary wildly. Sometimes it can spike quickly (15-30 minutes), other times it can take 2, 3, or even 4 hours. The reverse is also true, in that insulin can sometimes effect me quickly, and sometimes it can take effect 3+ hours later. In general, when having a big meal, I'll take a "fairly large" a…

Also a T1D and yea, I know what you mean. Physical activity, mental activity, and sickness can also massively effect dose. On days I'm physically active I feel like I need less than half the dose of insulin then days I'm caught behind a desk. This said, high impact mental stress that requires lots of thinking can rapidly drop my glucose level. And that's not counting being ill where my body will pretend like it's ins…

2 other factors other than physical activity and stress that seem to impact insuline sensitivity:

1. Temperature (room / outside)

2. How well you’re hydrated

Regarding the *time* it takes for eaten Carbs/glucose to enter the bloodstream, it seems that simply standing/being postural often slows down digestion, while sitting/laying down (think of a couch potato watching tv) seems to increase digestion speed.

Re: Continuous glucose monitors reveal variable glucose responses to the same meals

#63

I've been diagnosed with Type 2 diabetes and wear a CGM. I find that my blood glucose spikes much later than what is suggested. For example, I might eat a meal and my blood glucose doesn't spike until after 2 hours. When it spikes, I see the body react with insulin and it drives my blood sugar levels down, so I'm not sure if I actually do have T2D or if this is just how my body works. Another thing I've noticed is th…

CGMs react slower and can be quite wrong compared to finger pricking.

Re: Continuous glucose monitors reveal variable glucose responses to the same meals

#64
post #63

I've been diagnosed with Type 2 diabetes and wear a CGM. I find that my blood glucose spikes much later than what is suggested. For example, I might eat a meal and my blood glucose doesn't spike until after 2 hours. When it spikes, I see the body react with insulin and it drives my blood sugar levels down, so I'm not sure if I actually do have T2D or if this is just how my body works. Another thing I've noticed is th…

CGMs react slower and can be quite wrong compared to finger pricking.

Slower yes - there is typically a 15-20 min lag time - not two hours.

Re: Continuous glucose monitors reveal variable glucose responses to the same meals

#65

I've been diagnosed with Type 2 diabetes and wear a CGM. I find that my blood glucose spikes much later than what is suggested. For example, I might eat a meal and my blood glucose doesn't spike until after 2 hours. When it spikes, I see the body react with insulin and it drives my blood sugar levels down, so I'm not sure if I actually do have T2D or if this is just how my body works. Another thing I've noticed is th…

Usually T2D is diagnosed based on a fasting glucose test. I also recently worse a CGM because I was borderline T2D and wanted to know how various foods impacted my levels. My peak was about 2 hours after the meal, so about 1.5 hours and change, given the lag of the CGM.

I also found that sweets not only spiked my values but did so over a 6-12 hour period! That was shocking. I have not had dessert for 107 days because of it. I plan to do a fasting test (and A1C) in August to see how many values are. I hope they are much lower, but we'll see.

EDIT: also, popcorn with nothing on it but salt gave me a huge spike.

Re: Continuous glucose monitors reveal variable glucose responses to the same meals

#66

I've been diagnosed with Type 2 diabetes and wear a CGM. I find that my blood glucose spikes much later than what is suggested. For example, I might eat a meal and my blood glucose doesn't spike until after 2 hours. When it spikes, I see the body react with insulin and it drives my blood sugar levels down, so I'm not sure if I actually do have T2D or if this is just how my body works. Another thing I've noticed is th…

I’m diabetic and manage it with a CGM and insulin pump (HbA1c at 6.8 after many years of struggles).

For convenience and my experiment, I eat practically the same meals at lunch every day, precisely weighed, always starting from very similar morning glucose levels, and strictly respecting timing and consistency.

I NEVER get the same response. Never. It’s an experiment I’ve been running on myself for a year. It’s useful for me, but for the diabetes team following me, “that’s not possible, there must be other factors, it doesn’t show, it’s the ‘CGM algorithm’” (a mystical object no one knows anything about, except that it’s supposedly intelligent).

This study is interesting. I hope this kind of information, this doubt, trickles down into the medical community. Even though I don’t have much hope. Maybe in years and years.

Re: Continuous glucose monitors reveal variable glucose responses to the same meals

#67

I've been diagnosed with Type 2 diabetes and wear a CGM. I find that my blood glucose spikes much later than what is suggested. For example, I might eat a meal and my blood glucose doesn't spike until after 2 hours. When it spikes, I see the body react with insulin and it drives my blood sugar levels down, so I'm not sure if I actually do have T2D or if this is just how my body works. Another thing I've noticed is th…

I’m diabetic and manage it with a CGM and insulin pump (HbA1c at 6.8 after many years of struggles). For convenience and my experiment, I eat practically the same meals at lunch every day, precisely weighed, always starting from very similar morning glucose levels, and strictly respecting timing and consistency. I NEVER get the same response. Never. It’s an experiment I’ve been running on myself for a year. It’s usef…

Do you see any relation to physical exertion of the day before/after? What about mental signals, like "I'm going to be walking a bunch tomorrow"?

Re: Continuous glucose monitors reveal variable glucose responses to the same meals

#68
post #28

Earlier quoted context omitted.

Interesting. What’s your a1c level ? I think you could have a point at around 100-105 baseline but 120 seems too high.

It's high, like 6.7-6.9. It doesn't make sense to me because that would suggest average blood glucose of over 150, but it's objectively around 120.

RBCs life span can vary between humans. That's why hba1c is not always the correct surrogate.

Re: Continuous glucose monitors reveal variable glucose responses to the same meals

#69

I've been diagnosed with Type 2 diabetes and wear a CGM. I find that my blood glucose spikes much later than what is suggested. For example, I might eat a meal and my blood glucose doesn't spike until after 2 hours. When it spikes, I see the body react with insulin and it drives my blood sugar levels down, so I'm not sure if I actually do have T2D or if this is just how my body works. Another thing I've noticed is th…

I’m diabetic and manage it with a CGM and insulin pump (HbA1c at 6.8 after many years of struggles). For convenience and my experiment, I eat practically the same meals at lunch every day, precisely weighed, always starting from very similar morning glucose levels, and strictly respecting timing and consistency. I NEVER get the same response. Never. It’s an experiment I’ve been running on myself for a year. It’s usef…

Would be interesting if a non-diabetic person does the same trial, as a "control".

Note: This is pure speculation, and I'm not claiming to know anything more than passing knowledge about diabetes.

Re: Continuous glucose monitors reveal variable glucose responses to the same meals

#70
post #9
post #8

Some assumptions are so obvious no one bothers to state them, or even remember them. Assumption: Medical professionals are trained to use Evidence Based Medicine (EBM). One might assume that EBM means something specific, and I'm sure it does, but that specific thing is different for different people. One thing that EBM sometimes means is: common sense is no substitute for evidence. There are uncountable times that co…

It is wonderful that we have things like CGM's and patients can establish their own baselines and their own evidence profiles on a high(ish) frequency basis. Such tools also enable studies that can be done at a scale and cost level that is reasonable and can push forward the communal knowledge base.

This is the idea behind the "Zoe" service: https://zoe.com/en-us

1. You wear a CGM for 2 weeks, and log everything you eat.

2. At the end, you get a personalized report about how different foods that you ate affect you, personally. And they can extrapolate to other foods that you didn't eat during the testing period.

3. Zoe's model gets better and better the more people sign up, and the more data they get.

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