When T4 and T3 go low, TSH goes high. The hypothalamus senses low circulating levels of thyroid hormone —Triiodothyronine (T3) and Thyroxine (T4) — and responds by releasing thyrotropin-releasing hormone (TRH). TRH - Thyrotropin-releasing hormone is a hormone produced in the hypothalamus that stimulates the release of thyroid-stimulating hormone (TSH) from the anterior pituitary gland.… Continue reading Quick Thyroid Tour
Thyroid Cancer Advocates 