This is huge. Wonderful breakthrough for advocates for proper thyroid testing. And for patients with PCOS or type 2 diabetes who are also experiencing recurrent miscarriage.
When TSH is low, doctors assume you are hyperthyroid (hyper meaning too much) or that you are taking too much thyroid medication. They want to adjust your dosage based on your TSH.
Or worse, your TSH level shows up right in the middle of the range and your doctor says, “It’s normal. You don’t need any thyroid medication.” But in reality, your TSH is artificially low because you’re taking metformin. So you continue walking around overweight, tired, with dry skin and a growing bald patch on your head.
If you are taking metformin, your doctor MUST NOT use TSH to find the right dose for you. He must use Free T3 and Free T4.
To learn more about proper testing of thyroid hormones, whether you take metformin or not, go to Stop the Thyroid Madness.