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10 Things to Know About Thyroid Hormones

Published July 31, 2013

By Himanshu Sharma, Onlymyhealth editorial team

Thyroid hormones are produced by the thyroid gland. The thyroid gland stores these hormones, which are released when needed.

The thyroid gland is a butterfly-shaped gland that lies just below your voice box (larynx) and in front of your windpipe (trachea). The gland produces several hormones, but there are only two that are clinically relevant. These are thyroxine (T4) and triiodothyronine (T3).

Below are the 10 things that you must know about the hormones produced by the butterfly-shaped thyroid gland.

Estrogen Debate Continues: The WHI Side

By Charles Bankhead, Staff Writer, MedPage Today

A claim that thousands of women have died because they avoided estrogen therapy represents an oversimplification of the issues and reinforces the risks of subgroup analyses, according to investigators in the Women's Health Initiative (WHI).

Hormone therapy, whether hormone replacement therapy (HRT) or unopposed estrogen, confers risks and benefits that vary according to a woman's age, time since menopause, and numerous other factors. The WHI showed that postmenopausal hormone has variable effects and emphasized the need for individualized therapy, said JoAnn E. Manson, MD, DrPH, of Brigham and Women's Hospital in Boston.

The Menstrual Cycle - Getting the "Vital" Respect it Deserves

A Compilation of Abstracts Presented By:

Lawrence M. Nelson, M.D., M.B.A., National Institute of Child Health and Human Development, NIH, Bethesda, MD
Paula Hillard, M.D., University of Cincinnati College of Medicine, Department of Obstetrics and Gynecology and Department of Pediatrics, Cincinnati, OH
Justina Trott, M.D., F.A.C.P., American College of Women's Physicians, Santa Fe, NM
Sundeep Khosla, M.D., Endocrine Research Unit, Mayo Clinic and Foundation, Rochester, MN
Michelle P. Warren, M.D., Columbia College of Physicians and Surgeons, New York, NY
Edited by: Cydney Halpin

At a recent meeting held at the National Institute of Health (NIH) in Bethesda Maryland, it was the consensus among leading endocrinologists, obstetricians, gynecologists, epidemiologists, pediatricians, researchers, nurses and mid-wives, that the menstrual cycle is as much a "vital sign" as blood pressure, pulse rate, or temperature as an indicator when assessing a woman's overall health.



By Mayo Clinic staff

Hyperthyroidism (overactive thyroid) is a condition in which your thyroid gland produces too much of the hormone thyroxine. Hyperthyroidism can accelerate your body's metabolism significantly, causing sudden weight loss, a rapid or irregular heartbeat, sweating, and nervousness or irritability.

Several treatment options are available if you have hyperthyroidism. Doctors use anti-thyroid medications and radioactive iodine to slow the production of thyroid hormones. Sometimes, treatment of hyperthyroidism involves surgery to remove all or part of your thyroid gland. Although hyperthyroidism can be serious if you ignore it, most people respond well once hyperthyroidism is diagnosed and treated.



By Mayo Clinic staff

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. It seldom causes symptoms in the early stages, but, over time, untreated hypothyroidism can cause a number of health problems, such as obesity, joint pain, infertility and heart disease.

The good news is that accurate thyroid function tests are available to diagnose hypothyroidism, and treatment of hypothyroidism with synthetic thyroid hormone is usually simple, safe and effective once you and your doctor find the right dose for you.