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Thread: Can long term low carb skew Oral Glucose Tolerance Test results page

  1. #1
    jostle's Avatar
    jostle is offline Senior Member
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    Can long term low carb skew Oral Glucose Tolerance Test results

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    Our diet throughout the pregnancy and 6 months prior has been 90%-100% primal, no sugar, avg 50g carbs/day,50-70% fat, and lots of grass fed meat.
    The results were somewhat surprising that the initial test was 167 after 1 hr of ingesting glucose substance.
    The second test will be done next Fri, since anything over 140 requires a 3hr test be done after intaking a higher 100g glucose substance following a fast.
    I'm sure others have had this test done, since it's a common test during pregnancy to screen for gestational diabetes.
    What have your results been for this test?
    Were you low carb, high carb?
    Anyone have an idea why the results are high?

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    cillakat's Avatar
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    because you're not used to it. your lc diet absolutely skews the results.

    It's recommended not to restrict carbs for 48h prior to the test but to eat bread or potato a few times per day.

    Typically though, a fasting blood sugar is the gold standard - even during pregnancy. It's not too difficult, with a knowledgeable doc on board, to push for fasting bloods instead of a GTT.



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    Stabby's Avatar
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    The explanation I have heard is that when you don't consume a lot of carbs, your muscles aren't going to be running on glucose and so they decrease sensitivity so that glucose goes to the brain which will always need some glucose no matter what. This is how we partition glucose in ketosis. Why waste glucose on muscles when glucose is scarce 99% of the time? Also when your muscles are running on fats, they aren't going to be so ready to just take in glucose right away, they're burning the fats. It's a transient and unimportant thing since 50g of carbs isn't that much, and it is absorbed slowly in real food. If you started eating more carbs your sensitivity would go back up.

    Here is the link. http://high-fat-nutrition.blogspot.c...tance-and.html

    Fasting glucose is a better measure for metabolic health.

    edit: ja.
    Stabbing conventional wisdom in its face.

    Anyone who wants to talk nutrition should PM me!

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    cillakat's Avatar
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    Quote Originally Posted by jostle View Post
    Our diet throughout the pregnancy and 6 months prior has been 90%-100% primal, no sugar, avg 50g carbs/day,50-70% fat, and lots of grass fed meat.
    And totally separate from the glucose issue.....please have your doc/mw test your 25(OH)D levels (see my doc below for testing info and why it matters which lab). D is so phenominally critical during pregnancy.



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