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.
Your thyroid is a small gland at the base of your neck that makes thyroid hormone. Thyroid hormone controls many activities in your body, including how fast you burn calories and how fast your heart beats. Diseases of the thyroid cause it to make either too much or too little of the hormone.