Hi,
I wonder if synthetic T3 or T4 shutdowns your thyroid gland/HPTA similar to how testosterone shutdowns the testicles/HPTA?
On first hand it should do, since it also works through negative feedback? But I rememeber reading that it dosen't and studies showing people going off years/1-2 decades of thyroid replacement without any negative effects on thyroid production?
I wonder if synthetic T3 or T4 shutdowns your thyroid gland/HPTA similar to how testosterone shutdowns the testicles/HPTA?
On first hand it should do, since it also works through negative feedback? But I rememeber reading that it dosen't and studies showing people going off years/1-2 decades of thyroid replacement without any negative effects on thyroid production?