You can have a 3-hour GTT (glucose-tolerance-test) drawn - specifying insulin levels  - to determine if you're IR.  I'm overweight, but that's d/t a drastic change in activity level without a change in diet (I had a major injury that impacts what activities I can safely participate in), and was showing minor IR with "great" blood sugars. Â
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After the 3-hour GTT w/insulin, you can see if you're IR or not - if not, there may be no benefit to met... but if you ARE IR, then your MD should put you on met - even if not for the purpose of TTC - untreated IR can lead to diabetes and other serious negative health outcomes. Â
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I say this to everyone, because I have worked in healthcare and am HORRIFIED by what I have seen: YOU HAVE TO BE AN ADVOCATE FOR YOUR OWN HEALTHCARE!!! Â If your doctor won't do the blood test, go to someone else who will - you are a CONSUMER of healthcare - tell the medical community what you want by spending your healthcare $$ where you are getting what you want! Â You wouldn't order the world's best sushi and be okay when the waiter says, "No, you can't have sushi, I'll bring you tilapia." Â You'd go elsewhere, right?! Â Same thing with medicine!
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Okay... off my soapbox and to bed with my tired brain!
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--Rainy