I have thyroid issues.  My NaturoMedica doctor tested me for thyroid imbalance.  I’m going back in December to get the second test.  I’ve been using some natural supplements, but haven’t had too much success yet.  I’m now on synthetics.  I’ve always been a severely cold person and now that I’m taking this medicine, my body temperature is normal.  We’re just fine-tuning at this point.