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Testosterone is a steroid hormone from the androgen group. In mammals, testosterone is primarily secreted in the testes of males and the ovaries of females, although small amounts are also secreted by the adrenal glands
Study data does not support benefits of testosterone supplementation in men with ‘low T’

Study data does not support benefits of testosterone supplementation in men with ‘low T’

The prescription of testosterone supplementation for cardiovascular health, sexual function, physical function, mood, or cognitive function in men with "low T" is not supported by clinical trials data, conclude researchers who describe a review of more than 200 clinical trials published Sept. 21 in PLOS One. [More]
Duke researchers discover blood markers linked to drug-resistant tumor cells

Duke researchers discover blood markers linked to drug-resistant tumor cells

While searching for a non-invasive way to detect prostate cancer cells circulating in blood, Duke Cancer Institute researchers have identified some blood markers associated with tumor resistance to two common hormone therapies. [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]
Measuring blood levels of newly identified hormone may improve diagnosis of PCOS in teenagers

Measuring blood levels of newly identified hormone may improve diagnosis of PCOS in teenagers

Measuring blood levels of the recently discovered hormone irisin may improve diagnosis rates of teenagers with polycystic ovary syndrome, according to research presented today at the 55th Annual European Society for Paediatric Endocrinology Meeting. [More]
Study reveals how sex affects heart health in later life

Study reveals how sex affects heart health in later life

Having sex frequently - and enjoying it - puts older men at higher risk for heart attacks and other cardiovascular problems. For older women, however, good sex may actually lower the risk of hypertension. [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]
New research discovers how opposite-sex hormonal therapy influences the brain

New research discovers how opposite-sex hormonal therapy influences the brain

Women and men often show marked differences as regards mental illnesses. In order to learn more about this phenomenon, a project supported by the Austrian Science Fund FWF explored how opposite-sex hormonal therapy applied to transgender individuals influences the brain. [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]
T-sol can be safe and effective treatment for men with hypogonadism

T-sol can be safe and effective treatment for men with hypogonadism

For men with hypogonadism, a condition in which the body does not produce enough testosterone, low sex drive and fatigue are common symptoms. [More]
Novel computational analysis of prostate cancer suggests potential targets for therapy

Novel computational analysis of prostate cancer suggests potential targets for therapy

Cancer researchers have applied a comprehensive set of analytical tools to lethal cases of metastatic prostate cancer, yielding a detailed map of the complex networks of interactions among genes and proteins that enable prostate cancer cells to proliferate and evade treatment. [More]
Gene mutation linked to impulsive drunken behaviour shields bearers from obesity, insulin resistance

Gene mutation linked to impulsive drunken behaviour shields bearers from obesity, insulin resistance

University of Helsinki researchers have previously demonstrated that a point mutation in a gene of serotonin 2B receptor can render the carrier prone to impulsive behaviour, particularly when drunk. [More]
New technology uses natural nano-scale lipid transport system to deliver drugs straight to bloodstream

New technology uses natural nano-scale lipid transport system to deliver drugs straight to bloodstream

For years scientists and dieticians have argued over the health benefits of dietary fat. Research published this week, however, shows that piggybacking onto natural fat absorption pathways can dramatically enhance the utility of some drugs. [More]
Novel compound holds potential for next-generation prostate cancer treatment

Novel compound holds potential for next-generation prostate cancer treatment

In the search for new ways to attack recurrent prostate cancer, researchers at Duke Health report that a novel compound appears to have a unique way of blocking testosterone from fueling the tumors in mice. [More]
African-American men treated with ADT for prostate cancer suffer from high mortality rates

African-American men treated with ADT for prostate cancer suffer from high mortality rates

In a retrospective study analyzing patients' medical records, researchers at Brigham and Women's Hospital found that patients' race significantly affected their longevity by increasing the likelihood of death after receiving androgen deprivation therapy (ADT). [More]
Soy isoflavones may help improve metabolic and cardiovascular health in women with PCOS

Soy isoflavones may help improve metabolic and cardiovascular health in women with PCOS

Women who have polycystic ovary syndrome (PCOS)—a common cause of female infertility—may be able to improve their metabolic and cardiovascular health by consuming soy isoflavones, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism. [More]
Review provides new insights into diagnosis, treatment for PCOS

Review provides new insights into diagnosis, treatment for PCOS

Polycystic ovary syndrome (PCOS) afflicts over 14 million women in the United States. The disorder increases the risk of endometrial cancer, heart disease, high blood pressure, type 2 diabetes, asthma, obesity, depression and anxiety, as well as infertility and a variety of reproductive disorders. [More]
Some WADA-banned substances may have potential medical applications

Some WADA-banned substances may have potential medical applications

As the world awaits the start of the 2016 Summer Olympics, doping in athletes remains a hot topic. [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]
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