A thyroid hormone different from T4 and T3 acts as a control of insulin production by affecting the energy producing factories (mitochondria). Like T4 , the hormone is a prhormone that has to be converted into the active form. A bit biochemical but I thought people might like to see a new example of what thyroid hormones can control. The paper is downloadable for those interested.
Commentary: 3-Iodothyronamine Reduces Insulin Secretion In Vitro via a Mitochondrial Mechanism
Annunziatina Laurino and Laura Raimondi
Published on 28 February 2018
Front. Endocrinol. doi: