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Topic: Estrogen


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In the News (Sat 17 Aug 19)

  
  estrogen - Encyclopedia.com
estrogen, any one of a group of hormones synthesized by the reproductive organs and adrenal glands in females and, in lesser quantities, in males.
Estrogen metabolism and the diet-cancer connection: rationale for assessing the ratio of urinary hydroxylated estrogen metabolites.
Optimization of a Yeast Estrogen Screen and Its Applicability to Study the Release of Estrogenic Isoflavones from a Soygerm Powder.
www.encyclopedia.com /doc/1E1-estrogen.html   (1107 words)

  
 Does estrogen protect memory?
For example, estrogen increases the concentration of an enzyme needed to synthesize acetylcholine, a brain chemical that's critical for memory.
Estrogen also enhances communication between neurons in the hippocampus, an area of the brain that is important for verbal memory.
She argues that many studies that have found no effect of estrogen have used tests of cognitive function that are too blunt to differentiate different aspects of cognitive function.
www.apa.org /monitor/jan01/estrogen.html   (1309 words)

  
 estrogen. The Columbia Encyclopedia, Sixth Edition. 2001-05
Estriol is the principal estrogen formed by the placenta during pregnancy.
The ability of estrogens to suppress secretion of follicle-stimulating hormone (FSH) by the pituitary gland and thereby inhibit ovulation makes estrogen and estrogenlike compounds major components in oral contraceptives.
Estrogen replacement therapy (ERT) uses synthetic estrogen (e.g., Premarin), typically given with progestins (e.g., Provera) to treat the physical changes of menopause, including hot flashes and vaginal dryness.
www.bartleby.com /65/es/estrogen.html   (215 words)

  
 MedlinePlus Drug Information: Estrogen
Estrogen is used to treat hot flushes ('hot flashes'; sudden strong feelings of heat and sweating) in women who are experiencing menopause ('change of life', the end of monthly menstrual periods).
Estrogen is sometimes taken every day and sometimes taken according to a rotating schedule that alternates a period of time when estrogen is taken every day with a period of time when estrogen is not taken.
Estrogen may increase your risk of developing cancer of the ovaries or gallbladder disease that may need to be treated with surgery.
www.nlm.nih.gov /medlineplus/druginfo/medmaster/a682922.html   (1566 words)

  
 Estrogen
The estrogenic hormones are uniquely responsible for the growth and development of female sexual characteristics and reproduction in both humans and animals.
Estrogen controls growth of the uterine lining during the first part of the menstrual cycle, causes changes in the breasts during adolescence and pregnancy, and regulates various other metabolic processes, including bone growth and cholesterol levels.
Estrogen therapy is used to treat certain conditions, such as delayed onset of puberty and menopausal symptoms such as hot flashes and symptomatic vaginal atrophy.
www.healthywomen.org /healthtopics/estrogen   (1280 words)

  
 Estrogen
A paper by Recker showed that estrogen at a dose of.3mg/day along with adequate calcium and vitamin D was able to maintain bone density in women older than 65.
In primate models, estrogen has been shown to have beneficial effects on the development of arteriosclerotic plaques in the coronary arteries, which were independent of the effects on the lipids.
Estrogens should not be used in women with a history of coagulopathy, although a remote history of a single episode of thrombophlebitis associated with surgery, trauma or pregnancy is not a contraindication.
courses.washington.edu /bonephys/opestrogen.html   (1944 words)

  
 Estrogen-Balance for estrogen dominance
Estrogen Balance® supports improved estrogen metabolism leading to an optimal ratio of "good" to "bad" estrogen metabolites, which results in a greatly decreased risk of getting cancer as well as improved prostate and cardiovascular health.
External estrogens from a variety of sources may have a cumulative effect upon living organisms, and xenoestrogens may be part of a larger picture of a process of estrogenization of the environment.
It is his belief that an excess of estrogen, coupled with a deficiency of progesterone (the counter hormone to estrogen), is the common denominator for a lot of female troubles.
www.estrogen-balance.com   (3075 words)

  
 NIH News Release-NHLBI Stops Trial of Estrogen Plus Progestin Due to Increased Breast Cancer Risk, Lack of Overall ...
A separate WHI study of estrogen alone in women who had a hysterectomy before joining the WHI hormone program continues unchanged because, at this point, the balance of risks and benefits of estrogen alone is still uncertain.
An important objective of the trial was to examine the effect of estrogen plus progestin on the prevention of heart disease and hip fractures, and any associated change in risk for breast and colon cancer.
Women enrolled in the estrogen plus progestin study were randomly assigned to a daily dose of estrogen plus progestin (0.625 mg of conjugated equine estrogens plus 2.5 mg of medroxyprogesterone acetate) or to a placebo.
www.nhlbi.nih.gov /new/press/02-07-09.htm   (1575 words)

  
 Changing Chemistry Helps Explain Estrogen Threat to the Heart   (Site not responding. Last check: )
A piece of the topical puzzle of how estrogen goes from protecting women from heart disease to apparently increasing their risk later in life may have been found.
They were studying estrogen’s effects on blood vessels, focusing on its impact on the smooth muscle cells that allow blood vessels to contract, thereby regulating blood pressure and blood flow.
Menopause is adaptive because a woman is not supposed to have as much estrogen when she gets older because it can kill her.” He holds up a graph plotting the dramatically dropping rates of tetrahydrobiopterin over a woman’s life, a drop that parallels the drop in estrogen levels.
www.mcg.edu /news/2005NewsRel/Estrogen.html   (838 words)

  
  Estrogen therapy might help heart health of women in their 50s: study
Estrogen therapy for postmenopausal women, between the ages of 50 and 59 years, is not harmful for the heart and might even help its health, a study under the Women's Health Initiative has found.
What proponents of estrogen therapy need to be very careful about not doing is to put something into practice based on an analysis that in itself is based on surrogates or clinically unproven parameters, such as a procedure or splicing of subjects by age.
And, hypothetically, if estrogen alone were to ultimately yield benefit after consideration of all of the lingering questions, scientists would THEN have to prove whether this effect would apply to a non-hysterectomized woman, who may implicity have a lower heart disease risk to begin with simply because her ovaries are intact.
www.earthtimes.org /articles/show/5369.html   (1306 words)

  
  Estrogen
Estrogen is a major factor in the increased size of the uterus and thickening of the uterine wall.
Estrogen is responsible for an increased blood, lymphatics and nerve supply to the uterus, and throughout the body.
Estrogen is responsible for the increased size of the uterus, and more blood vessels both to and from the uterus.
www.rnceus.com /hormone/estrogen.html   (929 words)

  
 Discovery Health :: Diseases & Conditions :: Alzheimer's disease and estrogen
However, new health risks of estrogen therapy have been discovered, and clinicians disagree about the advisability of estrogen (or estrogen and progesterone) therapy for women in different situations.
Studies assessing the relationship between estrogen therapy and Alzheimer's disease have continued to be published over the last several years.
There is also an increased risk of cancer of the uterus if a woman takes estrogen and has not had her uterus surgically removed.
health.discovery.com /encyclopedias/illnesses.html?article=524   (557 words)

  
 Estrogen: Estrogen Replacement Therapy, Estrogen Cream, Estrogen Patch, Low Estrogen Level   (Site not responding. Last check: )
Estrogens are produced primarily in the ovaries, the corpus luteum, and the placenta.
Estrogens promote the development of female secondary sexual characteristics, such as breasts, and are involved in the menstrual cycle.
Estrogen replacement therapy is commonly prescribed for women as their natural estrogen levels decline after menopause or due to a hysterectomy when the ovaries are removed.
www.womenshealth.com /estrogens.html   (679 words)

  
 Estrogen Dominance
Estrogen dominance is a term coined by Dr. Lee in his first book on natural progesterone.
Even a woman with low estrogen levels can have estrogen dominance symptoms if she doesn 't have any progesterone.
You would have to virtually live in a bubble to escape the excess estrogens we're exposed to through pesticides, plastics, industrial waste products, car exhaust, meat, soaps and much of the carpeting, furniture and paneling that we live with indoors every day.
www.johnleemd.com /store/estrogen_dom.html   (449 words)

  
 Estrogen & Dementia, No Significant Link - Womens Health and Medical Information on MedicineNet.com
The WHI Hormone Trial using estrogen plus progestin was stopped early in July 2002 when researchers found an increased risk of breast cancer, along with greater risks of heart disease, stroke, and blood clots, and determined that these risks outweighed the benefits of reduced risks of hip fracture and colorectal cancer.
They found that estrogen plus progestin increased the risk of probable dementia in women 65 and older and did not preserve cognitive function.
A progestin is used with estrogen in menopausal hormone therapy in any woman with a uterus to prevent thickening and, sometimes, cancer of the lining of the uterus, the endometrium.
www.medicinenet.com /script/main/art.asp?articlekey=33513   (823 words)

  
 Estrogen (generic), Premarin, Estrace News - Topix
Estrogen can limit significantly the accumulation of plaque in the arteries of women in their 50s, according to a study published on Thursday in the New England Journal of Medicine, the Milwaukee Journal...
There's new evidence estrogen might provide women in their 50s with some protection against heart disease, but researchers warn the risks associated with this hormone-replacement therapy still outweigh the...
Nearly five years after government scientists told women that taking estrogen replacement therapy increased their risk of heart attacks and strokes, researchers have come nearly full circle on the issue, concluding that the drugs are beneficial for many after all.
www.topix.net /drug/estrogen   (843 words)

  
 Estrogen Replacement Therapy - Symptoms, Treatment and Prevention
Estrogen Replacement Therapy (ERT) is therapy to replace estrogen no longer made by a woman's body because she is post-menopausal or her ovaries have been damaged or removed.
The use of oral estrogen alone (without the use of oral progestin for part of the cycle, or when used without periodic interruption) has been shown to be associated with the development of cancer of the uterine lining.
Although the evidence suggests that postmenopausal estrogen may increase risk for some diseases, current data on estrogen's effects argue for an approach in which this hormone's potential risks and benefits are weighed for each woman on an individual basis.
www.healthscout.com /ency/435/176/main.html   (1130 words)

  
 FDA Updates Labeling for Ortho Evra Contraceptive Patch
It is a weekly prescription patch that releases ethinyl estradiol (an estrogen hormone) and norelgestromin (a progestin hormone) through the skin into the blood stream.
The addition of this new warning is a result of FDA's and the manufacturer's analysis directly comparing the levels for estrogen and progestin hormones in users of Ortho Evra with those in a typical birth control pill.
While the estrogen level with the patch remains constant for one week until the patch is removed, the peak blood levels with a daily birth control pill rapidly declines to levels that are lower than on the Orthro Evra.
www.fda.gov /bbs/topics/news/2005/NEW01262.html   (463 words)

  
 Estrogen Patch More Heart-Friendly Than Pills
Blood samples showed that the C-reactive protein increased to an average of almost twice their baseline levels when the women took oral estrogen replacement, but not when they were on the estrogen patch, writes lead researcher Wanpen Vongpatanasin, MD, with the University of Texas Southwestern Medical Center in Dallas.
It appeared that oral estrogen therapy over-stimulated the liver to produce C-reactive protein, "which may be harmful," she says.
Also, estrogen pills suppressed the levels of insulin-like growth factor, which is known to offer some anti-inflammatory and disease-prevention benefits.
www.webmd.com /content/article/63/72091.htm   (452 words)

  
 NIH News Release--Increased Risk of Ovarian Cancer is Linked to Estrogen Replacement Therapy--7/16/2002
Estrogen is a natural hormone produced primarily by the ovaries.
However, after it became clear in the 1970s that women who took estrogen alone had a six to eight times higher risk of developing endometrial cancer (cancer of the lining of the uterus), doctors began prescribing progestin along with much lower doses of estrogen.
It is not clear from this study whether the increased risk with estrogen use is due to higher doses of estrogen, longer duration of estrogen use, or both dose and duration.
www.nih.gov /news/pr/jul2002/nci-16.htm   (1248 words)

  
 OHSU - Health Care - Division of Hematology and Medical Oncology - Estrogen
Importantly, the patch estrogen did not cause triglyceride levels to rise, something that is common with oral estrogen preparations," Beer said.
Given orally, however, estrogen is associated with a high risk for blood clots that may involve both veins and arteries, and may include heart attacks.
The OHSU group hypothesized that transdermal estrogen would be less likely to cause blood clots and preliminary analysis of their data support this premise.
www.ohsu.edu /ohsuedu/healthcare/hemonc/news/newsarchive/Estrogen.cfm   (574 words)

  
 Mayo Clinic - Mayo Clinic Study Adds to the Growing Body of Knowledge Regarding Estrogen Replacement Therapy’s Effect ...
Estrogen status is associated with coronary calcium ("hardening of the arteries") and plaque area independent of age and coronary heart disease risk factors, the researchers reported.
Estrogen may modulate the calcium content of atherosclerotic plaques, as well as plaque area and may slow the progression of atherosclerosis in women.
However, the role of estrogen in the primary and secondary prevention of coronary heart disease remains controversial as its cardioprotective effects have not been confirmed in prospective clinical trials in women with established heart disease.
www.mayoclinic.org /news2002-rst/968.html   (413 words)

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