I’m in my early 40’s. My Blood Glucose was always around 80’s and 90’s.
I then had a test done and it was 100. The only thing that changed was I was doing a lot of intermittent fasting and trying to lose weight. This didn’t make sense that I would have a pre-diabetes blood glucose when I’m eating less and losing weight. I have very low body fat %.
I then decided to cut back on carbs and sugars to lower it back to the 80’s, but no matter what I do it stays consistently around 100.
Then, I decided to eat a lot of carbs and sugar, my blood glucose still stayed at 100.
I then tried to do research and saw a couple of youtube videos on some people saying that your blood glucose will rise if you intermittent fast because you become fat adapted or using ketones or body fat instead of glucose, so your fasting glucose rises because your body is adapting to using fats/ketones as energy.
If anyone is interested you can search youtube for fasting and blood glucose, there are videos about how your fasting blood glucose will rise if you are fasting.
Has anyone noticed their fasting blood glucose actually rising with intermittent fasting?
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Good video on this subject:
Ketosis takes like a full day of fasting to reach, becoming ketone adapted takes weeks of ketosis, to stay in ketosis you need to eat less than 20g of carbs. You don’t need to be fat to be insulin resistant, get your fasting insulin and A1C tested, if your fasting insulin is high you are insulin resistant and on the way to pre-diabetes and you will need to change your diet if you are already lean and probably up exercise.
“Ideally, your blood insulin levels should be less than ~6 microunits per milliliter of blood (µU/mL). While ~8–9 µU/mL is the average for men and women, it’s not good to be “average” in this case; a person with 8 µU/mL has double the risk of developing type 2 diabetes as a person with 5 µU/mL.”
Bikman, Benjamin. Why We Get Sick (p. 176). BenBella Books. Kindle Edition.
The general pattern is for people to have insulin resistance long before (~years) it shows up in blood glucose levels, and the numbers you are reporting seem like the normal path to insulin resistance. I’m not saying that’s what’s going on in your case, but there’s no particular reason to assume what you’re reporting is due to something unusual (eg, fasting). The problem in all of this is that glucose is the easy thing to measure, not the best thing to measure, and high glucose is a late sign of problems, not an early sign.