During prolonged cold exposure, the thyroid gland increases its production of the enzyme that activates thyroid hormone, while the hypothalamus reduces it, showing that different parts of the body...

Thyroid Hormone Levels and Expression of Genes Involved in Regulation of Thyroid System Activity in Male Rats Exposed to Prolonged Low Temperatures, and the Effect of a Thyroid-Stimulating Hormone Receptor Antagonist on These Parameters