Hormone News and Research

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A hormone is a chemical released by one or more cells that affects cells in other parts of the organism. Only a small amount of hormone is required to alter cell metabolism. It is essentially a chemical messenger that transports a signal from one cell to another.

New male contraceptive

Men and women have long been promised a male version of the female contraceptive pill. But the first new male contraceptive to market may not be hormonal at all.

8 May 2006

Hormone therapy still the most effective for menopause symptoms

A new study has found that estrogen therapy is the best treatment for menopause-related hot flashes.

3 May 2006

$Men with low estrogen levels have an increased risk for future hip fracture$

Men with low estrogen levels have an increased risk for future hip fracture

A new study has found that men with low estrogen levels have an increased risk for future hip fracture, and those with both low estrogen and low testosterone levels have the greatest risk.

3 May 2006

Melatonin, taken orally can improve ability to sleep

Researchers from the Divisions of Sleep Medicine at Brigham and Women's Hospital and Harvard Medical School have found in a double-blind placebo-controlled clinical study, that melatonin, taken orally during non-typical sleep times, significantly improves an individual's ability to sleep.

3 May 2006

Study helps explain why aerobic training helps heart failure patients

Aerobic training is associated with a reversal of abnormal hormonal patterns that underlie many of the debilitating symptoms of heart failure, according to a new study in the Journal of the American College of Cardiology.

3 May 2006

Hormones may affect how brain listens

From zebra fish to humans, reproductive hormones govern behavioral responses to courtship signals.

3 May 2006

Researchers test secret herb to stop hot flushes associated with breast cancer

Researchers at the University of Manchester are testing a secret herb in a bid to stop the severe hot flushes that besiege breast cancer patients on hormone treatment.

From The University of Manchester 3 May 2006

New drug lixivaptan reduces excess fluid build-up in patients with congestive heart failure

Researchers believe they may have identified a new agent to reduce the excess fluid build-up in patients with congestive heart failure, one that avoids the relative sodium-depleting effects of diuretics, now the most commonly used drugs for this purpose.

3 May 2006

A contraceptive pill for men!

According to a Sydney scientist a hormone-based contraceptive for men has the ability to reverse its effect just four months after stopping its use.

1 May 2006

Study indicates how drug efficacy can be increased by manipulating the signalling mechanism

Researchers believe they have found a way to change the action of 60 percent of currently available medications, in some cases making them many times more effective, according to an article published in the April 21 edition of the journal Science. The discovery has the potential to improve treatments for diseases including heart disease, cancer, diabetes, depression and arthritis. The study describes a new way to manipulate perhaps the most important signaling mechanism in human cells: G-protein coupled receptors (GPCRs).

28 Apr 2006

Osteoporosis could be caused by factors other than declining estrogen levels

New evidence in the April 21, 2006 Cell challenges the long-standing notion that declining estrogen levels alone lead to osteoporosis after women go through menopause. The researchers rather found that high levels of pituitary-derived follicle-stimulating hormone (FSH) cause bone loss in mice. The pituitary is a master gland found at the base of the brain.

26 Apr 2006

Study shows drugs work differently in the brains of men and women

A Johns Hopkins discovery could lead to tailored treatments for drug abuse and neurological diseases after providing what is believed to be the first evidence in people that amphetamines have a greater effect on men's brains than women's.

24 Apr 2006

Study reveals findings on how insulin-producing beta cells grow and function

A new Joslin Diabetes Center-led study has shown conclusively that two receptors in the insulin-producing beta cell do not affect developmental growth, refuting a long-held hypothesis in diabetes research.

23 Apr 2006

HRT can reduce heart attacks by about one-third in women under age 60

For the last few years, women have heard conflicting reports about the risks and benefits of hormone replacement therapy (HRT). A new study that analyzes many trials together concludes that HRT can reduce heart attacks by about one-third in women under age 60 but has mixed results for older women.

23 Apr 2006

New research links metabolism and appetite suppression, opening door to obesity treatments

A team led by a Canadian researcher has discovered a process by which a small protein acts directly within muscles to increase the body's metabolism to burn fat while simultaneously suppressing appetite.

19 Apr 2006

Prostate cancer research may be faster with prostate-specific antigen endpoints

A new study from Columbia University Medical Center researchers at NewYork-Presbyterian Hospital/Columbia, who are members of the Southwest Oncology Group (SWOG), suggests that certain changes in prostate-specific antigen (PSA) levels may serve as surrogate endpoints for prostate cancer survival.

18 Apr 2006

It's a vicious circle - exposure to stress causes anxiety and depression

Experts in the United States say the results of a study with mice suggests that stress in itself may cause anxiety and depression.

18 Apr 2006

Genetic switch that links animal growth and cancer

Laboratory discoveries by scientists at two universities may lead to new directions in cancer therapy drugs. The researchers have discovered that a genetic switch involved in growth and development of an animal is the same one used to prevent normal cells from becoming cancerous.

18 Apr 2006

Anxiogenic-like effect of chronic corticosterone in the light-dark emergence task in mice

Neuroscientists at Harvard Medical School and its affiliate McLean Hospital have shown that long-term exposure to stress hormone in mice directly results in the anxiety that often comes with depression.

18 Apr 2006