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Estrogens are a family of related molecules that stimulate the development and maintenance of female characteristics and sexual reproduction.

The natural estrogens produced by women are steroid molecules, which means that they are derived from a particular type of molecular skeleton containing four rings of carbon atoms, giving the shape shown here. The most prevalent forms of human estrogen are estradiol and estrone. Both are produced and secreted by the ovaries, although estrone is also made in the adrenal glands and other organs.
Birth control pills may increase risk for breast cancer

Birth control pills may increase risk for breast cancer

Women who recently used birth control pills containing high-dose estrogen and a few other formulations had an increased risk for breast cancer, whereas women using some other formulations did not, according to data published in Cancer Research, a journal of the American Association for Cancer Research. [More]
No two single tumor cells in breast cancer patients have same genome

No two single tumor cells in breast cancer patients have same genome

Just as no two people possess the same genetic makeup, a recent study has shown that no two single tumor cells in breast cancer patients have an identical genome. [More]
Researchers investigate hereditary breast cancer to find new treatment approaches

Researchers investigate hereditary breast cancer to find new treatment approaches

Deborah Kelly and Zhi Sheng, assistant professors at the Virginia Tech Carilion Research Institute, recently received a grant from the Commonwealth Health Research Board to investigate hereditary breast cancer, an effort that may lead to new treatment approaches. [More]
Research suggests effective role for natural steroid hormones in treating breast cancer

Research suggests effective role for natural steroid hormones in treating breast cancer

A new study supports a growing body of research suggesting a safe and effective role for natural steroid hormones in treating postmenopausal breast cancer, with fewer detrimental side effects and improved health profile than with standard anti-hormone therapies. [More]
New research sheds light on genetic basis for heart disease in women

New research sheds light on genetic basis for heart disease in women

When it comes to heart disease, Dr. Ross Feldman says women are often in the dark. Historically, it was thought that heart disease was a men's-only disease, however, data has shown that post-menopausal women are just as likely as men to get heart disease and are less likely to be adequately diagnosed and treated. [More]
Researchers explore brain estrogens to mitigate learning and memory problems

Researchers explore brain estrogens to mitigate learning and memory problems

New studies being launched by neurobiologist Luke Remage-Healey at the University of Massachusetts Amherst will investigate how estrogens produced in the brains of young birds enhance their ability to learn songs during a critical window during development. [More]
Experts join MD Anderson to end cancer

Experts join MD Anderson to end cancer

The University of Texas MD Anderson Cancer Center is pleased to announce that one of the world's preeminent experts in breast cancer research and treatment, V. Craig Jordan, Ph.D., will join the institution's efforts to end cancer. Jordan is considered the "Father of Tamoxifen," the groundbreaking therapeutic drug that has saved countless lives. [More]
Scientist fights extremely aggressive and difficult-to-treat form of breast cancer

Scientist fights extremely aggressive and difficult-to-treat form of breast cancer

Biomedical scientist Kimberly L. Koss, PhD, is fighting an extremely aggressive and difficult-to-treat form of breast cancer. [More]
Chemoprevention and colon cancer: an interview with Dr. John Letterio, Case Western Reserve University School of Medicine

Chemoprevention and colon cancer: an interview with Dr. John Letterio, Case Western Reserve University School of Medicine

The basic idea of cancer chemopre­vention is to arrest or reverse the progression of pre­malignant cells towards full malignancy, using physiological mechanisms that do not kill healthy cells. [More]
Personalized medicine for breast cancer patients may be just around the corner

Personalized medicine for breast cancer patients may be just around the corner

For breast cancer patients, the era of personalized medicine may be just around the corner, thanks to recent advances by USC Stem Cell researcher Min Yu and scientists at Massachusetts General Hospital and Harvard Medical School. [More]
Tamoxifen gel stops breast cancer growth without causing dangerous side effects

Tamoxifen gel stops breast cancer growth without causing dangerous side effects

A gel form of tamoxifen applied to the breasts of women with noninvasive breast cancer reduced the growth of cancer cells to the same degree as the drug taken in oral form but with fewer side effects that deter some women from taking it, according to new Northwestern Medicine- research. [More]
Acupuncture can affect severity of hot flashes for women in natural menopause

Acupuncture can affect severity of hot flashes for women in natural menopause

In the 2,500+ years that have passed since acupuncture was first used by the ancient Chinese, it has been used to treat a number of physical, mental and emotional conditions including nausea and vomiting, stroke rehabilitation, headaches, menstrual cramps, asthma, carpal tunnel, fibromyalgia and osteoarthritis, to name just a few. [More]
New findings paint optimistic picture of women's chances of surviving breast cancer

New findings paint optimistic picture of women's chances of surviving breast cancer

New findings from Fox Chase Cancer Center paint a relatively optimistic picture of women's chances of surviving a subset of breast cancers that have spread to the chest wall or skin, but not beyond. [More]
Letrozole drug results in higher birth rates in women with PCOS

Letrozole drug results in higher birth rates in women with PCOS

The drug letrozole results in higher birth rates in women with polycystic ovary syndrome (PCOS) than the current preferred infertility treatment drug, according to a nationwide study led by Penn State College of Medicine researchers. [More]
Genentech agrees to acquire Seragon Pharmaceuticals

Genentech agrees to acquire Seragon Pharmaceuticals

Genentech, a member of the Roche Group, today announced it has entered into a definitive agreement to acquire Seragon Pharmaceuticals, Inc., a privately held biotechnology company based in San Diego, California. [More]
Conventional fertility hormones do not increase risk of breast, gynecological cancers

Conventional fertility hormones do not increase risk of breast, gynecological cancers

There is "little evidence" that the use of conventional fertility hormones used for ovarian stimulation in the treatment of infertility increases the long-term risk of breast and gynecological cancers, according to the results of a substantial 30-year follow-up study. [More]
Menopause-related changes in sex hormones linked to greater risk for heart disease

Menopause-related changes in sex hormones linked to greater risk for heart disease

As hormone levels change during the transition to menopause, the quality of a woman's cholesterol carriers degrades, leaving her at greater risk for heart disease, researchers at the University of Pittsburgh Graduate School of Public Health discovered. [More]
Adeno-associated virus type 2 kills triple-negative breast cancer cells in mice

Adeno-associated virus type 2 kills triple-negative breast cancer cells in mice

A virus not known to cause disease kills triple-negative breast cancer cells and killed tumors grown from these cells in mice, according to Penn State College of Medicine researchers. Understanding how the virus kills cancer may lead to new treatments for breast cancer. [More]
Animal study: Common BPA substitute alters brain development, causes hyperactive behavior

Animal study: Common BPA substitute alters brain development, causes hyperactive behavior

A chemical found in many "BPA free" consumer products, known as bisphenol S (BPS), is just as potent as bisphenol A (BPA) in altering brain development and causing hyperactive behavior, an animal study finds. [More]
Soy protein supplements do not reduce testosterone levels in men with Type 2 diabetes

Soy protein supplements do not reduce testosterone levels in men with Type 2 diabetes

Soy protein supplements, which contain natural estrogens, do not reduce testosterone levels in men with Type 2 diabetes who already have borderline-low testosterone, according to a new study. [More]