Define pharmaceutical: of, relating to, or engaged in pharmacy or the manufacture and sale of pharmaceuticals â pharmaceutical in a sentence of, relating to, or engaged in pharmacy or the manufacture and sale of pharmaceuticalsâ¦ See the full definition
Hypothyroidism (underactive thyroid) Overview. Hypothyroidism (underactive thyroid) is a condition in which your thyroid gland doesn't produce enough of certain important hormones. Women, especially those older than age 60, are more likely to have hypothyroidism. Hypothyroidism upsets the normal balance of chemical reactions in your body.
Thyroid hormones are made by the thyroid gland. The thyroid gland makes and releases two thyroid hormones: thyroxine (T4) and triiodothyronine (T3). Thyroid hormones affect every cell and all the organs of the body.Too much thyroid hormone speeds things up and too little thyroid hormone slows things down.They: 1  Control the rate at which your body burns calories (your metabolism).hyroid hormones affect every cell and all the organs of the body. Too much thyroid hormone speeds things up and too little thyroid hormone slows things down. They: 1  Control the rate at which your body burns calories (your metabolism).