Skip to Content
Home > Patients & Visitors > Health Library > Thyroid Hormones
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:
The pituitary gland and the thyroid gland work together. The
pituitary gland (located near the base of the brain) makes, stores,
and releases thyroid-stimulating hormone (TSH). When TSH is secreted by the
pituitary gland, it causes the thyroid gland to release more T3 and T4. A high TSH level means there isn't enough thyroid hormone, and a low TSH level means there is too much.
November 4, 2011
E. Gregory Thompson, MD - Internal Medicine & David C.W. Lau, MD, PhD, FRCPC - Endocrinology
How this information was developed to help you make better health decisions.
To learn more visit Healthwise.org
© 1995-2013 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.
Our interactive Decision Points guide you through making key health decisions by combining medical information with your personal information.
You'll find Decision Points to help you answer questions about:
Get started learning more about your health!
Our Interactive Tools can help you make smart decisions for a healthier life. You'll find personal calculators and tools for health and fitness, lifestyle checkups, and pregnancy.
Feeling under the weather?
Use our interactive symptom checker to evaluate your symptoms and determine appropriate action or treatment.
Send Us Your Feedback
North Kansas City Hospital.