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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.
Radiation boost provides added benefit to DCIS patients following breast-conserving surgery and WBRT

Radiation boost provides added benefit to DCIS patients following breast-conserving surgery and WBRT

A supplemental "boost" of radiation improves local control and provides an incremental benefit in decreasing breast cancer recurrence for patients with Ductal Carcinoma In Situ (DCIS) who receive whole breast radiation therapy radiation (WBRT) following lumpectomy, according to research presented today at the 58th Annual Meeting of the American Society for Radiation Oncology. [More]
Progesterone treatment protects female mice against consequences of influenza infection

Progesterone treatment protects female mice against consequences of influenza infection

Over 100 million women are on hormonal contraceptives. All of them contain some form of progesterone, either alone or in combination with estrogen. [More]
Genetic testing of mtDNA may reveal unknown ancestry that influences risk for breast cancer

Genetic testing of mtDNA may reveal unknown ancestry that influences risk for breast cancer

Genetic testing of mitochondrial DNA could reveal otherwise unknown ancestry that can influence a person's risk for certain types of breast cancer, a new study finds. [More]
Predominance of testosterone in males may explain disparate ACL injury rate between men and women

Predominance of testosterone in males may explain disparate ACL injury rate between men and women

In studies on rats, Johns Hopkins Medicine scientists report new evidence that the predominance of the hormone testosterone in males may explain why women are up to 10 times more likely than men to injure the anterior cruciate ligament (ACL) in their knees. [More]
Study may help reassure women who fear endometrial side effects of breast cancer drug

Study may help reassure women who fear endometrial side effects of breast cancer drug

A study led by Loyola Medicine researchers may help reassure patients who worry the breast cancer drug tamoxifen could increase their risk of uterine cancer. [More]
Study identifies new gene that suppresses breast cancer in mice

Study identifies new gene that suppresses breast cancer in mice

In recent years, the incidence of breast cancer has been increasing worldwide, and breast cancer is becoming a serious object of public concern. [More]
Research offers new insights into underlying mechanisms of deadly cystic fibrosis

Research offers new insights into underlying mechanisms of deadly cystic fibrosis

A minor hiccup in the sequence of a human gene can have devastating impacts on health. Such flaws cause cystic fibrosis (CF), a disease affecting the lungs and other vital organs, often leading to death by the age of 30. [More]
Researchers unlock genetic code that disrupts response to breast cancer therapy

Researchers unlock genetic code that disrupts response to breast cancer therapy

Scientists may have unlocked the genetic code that determines why many patients with estrogen receptor-positive breast cancer fail to respond to the widely used drug tamoxifen. [More]
New computer program can predict underlying genomics of ER+ breast cancer

New computer program can predict underlying genomics of ER+ breast cancer

The number of tubules in tumors may predict which women with estrogen receptor positive (ER+) breast cancer will benefit from hormone therapy alone and which require chemotherapy, researchers at Case Western Reserve University have found. [More]
Pregnant woman's exposure to phthalates linked to genital abnormalities in newborn boys

Pregnant woman's exposure to phthalates linked to genital abnormalities in newborn boys

Doctors and researchers know that man-made chemicals commonly found in plastics, foods, personal care products and building materials can interfere with how hormones like estrogen and testosterone work in the body. [More]
SAGA funding initiative aims to advance understanding of potential sex differences in Alzheimer's

SAGA funding initiative aims to advance understanding of potential sex differences in Alzheimer's

The first-ever Alzheimer's Association Sex and Gender in Alzheimer's research grant awards will provide $2.2 million to nine projects to advance understanding of the disproportionate effect of Alzheimer's disease on women. [More]
Scientists identify eight cancer types linked to excess weight and obesity

Scientists identify eight cancer types linked to excess weight and obesity

There's yet another reason to maintain a healthy weight as we age. An international team of researchers has identified eight additional types of cancer linked to excess weight and obesity: stomach, liver, gall bladder, pancreas, ovary, meningioma (a type of brain tumor), thyroid cancer and the blood cancer multiple myeloma. [More]
Melatonin appears to suppress growth of breast cancer stem cells

Melatonin appears to suppress growth of breast cancer stem cells

Melatonin, a hormone produced in the human brain, appears to suppress the growth of breast cancer tumors. [More]
Seeds of tropical shrub guarana contain ten times more amount of catechins than green tea

Seeds of tropical shrub guarana contain ten times more amount of catechins than green tea

The millions of people who consume green tea all over the world benefit from the catechins it contains. [More]
Prenatal BPA exposure could lead to development of anxiety and depression in boys

Prenatal BPA exposure could lead to development of anxiety and depression in boys

Boys exposed prenatally to a common chemical used in plastics may be more likely to develop symptoms of anxiety and depression at age 10-12. [More]
SUNY Downstate professor provides tips for new mothers who experience severe hair loss

SUNY Downstate professor provides tips for new mothers who experience severe hair loss

For new mothers concerned about hair loss, dermatologists say they needn't worry. Many women experience noticeable hair loss after having a baby, and experts say it is normal, temporary and caused by changes in hormones. [More]
Study reveals needle biopsy hormone receptor testing for DCIS wastes millions

Study reveals needle biopsy hormone receptor testing for DCIS wastes millions

For patients with the most common type of noninvasive breast cancer, routine testing for estrogen and progesterone receptors in tissue taken at the first "needle" biopsy is both unnecessary and wasteful, according to results of a study led by Johns Hopkins pathologists. [More]
Women using contraception containing estrogen may have high vitamin D levels, study shows

Women using contraception containing estrogen may have high vitamin D levels, study shows

Women risk having their vitamin D levels fall when they stop using birth control pills or other contraceptives containing estrogen, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism. [More]
Naturally occurring estrogen in cow’s milk does not affect blood hormone levels, study shows

Naturally occurring estrogen in cow’s milk does not affect blood hormone levels, study shows

Estrogen occurs naturally in cow's milk. Recently, there has been concern that consuming milk containing elevated amounts of estrogen could affect blood levels of the hormone in humans, leading to an increased risk of some cancers. [More]
UTA researchers find how changing estrogen levels make women more vulnerable to cocaine addiction

UTA researchers find how changing estrogen levels make women more vulnerable to cocaine addiction

Researchers at The University of Texas at Arlington are studying how fluctuating estrogen levels make females increasingly sensitive to the rewarding effects of cocaine and ultimately, vulnerable to cocaine addiction. [More]
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