Hormone Replacement Therapy

Picture of two elderly women, smiling Controversy over hormone replacement therapy:

Estrogen replacement therapy (ERT), the use of estrogen to supplement that which is no longer being produced by the body, and hormone replacement therapy (HRT), in which estrogen and progestin (a synthetic progesterone) are used in combination for women who have a uterus, have been the subject of great controversy over the years.

Today, the debate still continues and the choice to continue HRT if a woman has already started or to start HRT as a woman enters perimenopause and menopause is more controversial than ever. During the summer of 2002, the National Institutes of Health (NIH) halted a major clinical trial of the risks and benefits of combined estrogen and progestin in healthy menopausal women, due to findings of an increased risk of invasive breast cancer and cardiovascular complications among its participants. The complications included increases in the risk of coronary heart disease, stroke, and pulmonary embolism. The study was scheduled to run until 2005.

The National Women’s Health Information Center (NWHIC), Office of Women’s Health, US Department of Health and Human Services, in response, offers the following suggestions for women who are currently taking hormone replacement therapy:

  • The most important thing a woman can do in deciding to continue hormone replacement therapy is discuss the current research with her physician and healthcare team.

  • Women need to be aware that taking a combined progesterone and estrogen regimen is no longer recommended to prevent heart disease. A woman should discuss other alternatives of protecting the heart with her physician.

  • Women should discuss with their physicians the value of taking combined progesterone and estrogen replacement therapy to prevent osteoporosis. There may be alternative treatments based on a woman's unique health profile.

  • Women need to understand that this latest research does not affect women who have had their uterus removed by hysterectomy, who are usually prescribed estrogen alone. Those findings are not yet available.

Always consult your physician for more information.

What is hormone replacement therapy?

When a woman reaches menopause, the production of estrogen and progesterone decreases significantly. HRT is a means of replacing these hormones that are no longer being produced by the body. This type of therapy is usually commenced at menopause or may be started while a woman is in the perimenopausal phase, nearing menopause. In years past, many physicians would recommend that women take HRT for the rest of their lives to realize the maximum benefits; however, in light of the most current research, HRT is not advised for all women. It is crucial that the decision to take HRT be made on an individual based after a complete review of a woman’s medical history.

How is hormone therapy replacement administered?

According to the American Medical Association, HRT can be administered in a variety of methods, including the following:

estrogen pillsEstrogen pills can either be taken every day. Women who have had a hysterectomy can take estrogen alone, while those who have not may take a combination pill (estrogen and a progestin).
estrogen/progestin pillsThere are two methods - the continuous method and the cyclic method - for taking estrogen and progestin. In the continuous method, a pill that contains both estrogen and progestin is taken daily. Occasionally, irregular bleeding may occur.

The cyclic method involves taking estrogen and progestin separately - with estrogen taken either every day for 28 days and progestin taken for 14 days. This may cause monthly "withdrawal" bleeding.

estrogen and estrogen/progestin skin patchesUsing this method, a patch is applied to the skin of the abdomen or buttocks for 3 ½ or 7 days. The patch is then discarded and a new one is applied. The patch can be left on at all times, even while swimming or bathing, and either the estrogen, or estrogen/progestin combination is delivered through the skin into the bloodstream. Progestin can be taken in a pill form with the patch. The patches may cause monthly bleeding.
estrogen cream, pill or ringEstrogen cream, pills or a vaginal estrogen ring is inserted into the vagina or used locally around the vulva to help with vaginal dryness and urinary problems.
raloxifeneRaloxifene is an estrogen-like drug (sometimes called "designer estrogen") that is part of a new class of drugs called selective estrogen receptor modulators (SERMs). It does not stimulate the uterine linig, but may aggravate symptoms of vaginal dryness.


For women who are appropriate candidates for HRT, this type of therapy can often be customized to provide the most benefits with the least side effects. It is important for women to talk with their physician about any discomfort or menstrual symptoms experienced with HRT, as treatment approaches and dosages can be adjusted.

UAB Medicine
UAB Health System

UAB Health System

Physicians & Caregivers

Events

Research & Trials

Login