Hormone Therapy
(Estrogen Therapy, Estrogen/Progestin Therapy)

Medical Author: Ruchi Mathur, MD
Medical Editors: William C. Shiel Jr., MD, FACP, FACR,  Dennis Lee, MD
Revising Medical Author: Carolyn Crandall, MD, MS, FACP

• What is menopause?
• Does menopause cause bone loss?
• What are estrogen therapy and hormone therapy (HT)?
• What are the side effects and risks of hormone therapy (HT)?
• How is hormone therapy (HT) prescribed?
• Who should take hormone therapy (HT)?
• Who should not take hormone therapy (HT)
• What medical checkups are advised for women on hormone therapy (HT)?
• What if a woman decides against hormone therapy (HT)?
• Hormone Therapy At A Glance

In this article, the term "hormone therapy" or "HT" is replacing the outdated terminology "hormone replacement therapy" or "HRT."

What is menopause?

Menopause is the stage in a woman's life when menstruation stops and she can no longer bear children. During menopause, the body produces less of the female hormones, estrogen and progesterone. After menopause, the lower hormone levels cause the monthly menstrual periods to stop and gradually eliminate the possibility of becoming pregnant. These fluctuations in hormone levels can also cause troublesome symptoms, such as hot flashes (a sudden sensation of warmth, sometimes associated with flushing, and often followed by sweating) and sleep disturbance. Sometimes women experience other symptoms, such as vaginal dryness. For more information, please read the Menopause article.

While many women encounter little or no trouble during menopause, others endure moderate to severe discomfort.

Does menopause cause bone loss?

The lower estrogen levels of menopause can lead to progressive bone loss that is especially rapid in the first five years after menopause. Some bone loss in both men and women is normal as people age. Lack of estrogen after menopause adds another strain on the bones in addition to the usual age-related bone loss. When bone loss is severe, a condition called osteoporosis weakens bones and renders them susceptible to breaking. For more, please read the osteoporosis article.

Next: What are estrogen therapy and hormone therapy (HT)? »

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