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.

Dialysis patients living at higher altitudes have lower rate of death

Compared to dialysis patients living near sea level, dialysis patients living at an altitude higher than 4,000 feet have a 12-15 percent lower rate of death, according to a study in the February 4 issue of JAMA.

5 Feb 2009

Breast cancer risk rapidly declines after women stop taking postmenopausal combined hormone therapy

Women who stopped taking the postmenopausal hormone combination of estrogen plus progestin experienced a marked decline in breast cancer risk which was unrelated to mammography utilization change, according to a study from the Women's Health Initiative led by a Los Angeles Biomedical Research Institute (LA BioMed) investigator that was published today in The New England Journal of Medicine.

5 Feb 2009

New test predicts how breast cancer patients respond to chemotherapy

Researchers at the Swiss Institute of Bioinformatics and the Swiss National Center of Competence in Research in Molecular Oncology in Lausanne have developed a new test to predict how breast cancer patients respond to chemotherapy, which could help change how treatment is delivered in the future.

3 Feb 2009

New clues to pancreatic cells' destruction in diabetes

Researchers have found what appears to be a major culprit behind the loss of insulin-producing beta cells from the pancreases of people with diabetes, a critical event in the progression of the disease.

3 Feb 2009

Growth hormone treatment for six months after weight loss surgery prevents loss of muscle mass

Growth hormone treatment for six months after weight loss surgery reduces patients' losses in lean body mass and skeletal muscle mass, according to a new study accepted for publication in The Endocrine Society's Journal of Clinical Endocrinology & Metabolism (JCEM).

3 Feb 2009

At last a male contraceptive jab!

At last a male contraceptive jab has been developed and is all set to be trialled - and Sydney men will be the first guinea pigs!

3 Feb 2009

Dialysis patients residing at higher altitude have lower rate of death

3 Feb 2009

Hormone level during pregnancy may identify women at risk for postpartum depression

Women who have higher levels of a hormone produced by the placenta midway through their pregnancy appear more likely to develop postpartum depression, according to a report in the February issue of Archives of General Psychiatry.

2 Feb 2009

The end of sex as we once knew it

Women are not from Venus any more than men are from Mars. But even though both sexes are perfectly terrestrial beings, they are not lacking in other differences. And not only in their reproductive organs and behavior, either, but in such unsexy characteristics as the propensity for drug abuse, fine motor control, reaction to stress, moods and many brain structures.

2 Feb 2009

Study identifies potential 'safe period' for hormone replacement use

A new study makes important new findings on the role of hormone use on the risk of breast cancer, confirming that the use of estrogen plus progesterone increases the risk of both ductal and lobular breast cancer far more than estrogen-only; suggesting a two-year 'safe' period for the use of estrogen and progesterone; and finding that the increased risk for ductal cancers observed in long-term past users of hormone replacement therapy drops off substantially two years after hormone use is stopped.

2 Feb 2009

Stress may speed growth of melanoma tumors

For patients with a particularly aggressive form of skin cancer - malignant melanoma - stress, including that which comes from simply hearing that diagnosis, might amplify the progression of their disease.

2 Feb 2009

Shift workers' body clocks studied to prevent certain cancers

Does shift work predispose you to cancer by altering the body's response to hormones?

2 Feb 2009

Pregnancy-related hormonal changes linked to increased risk of restless legs syndrome

A study in the Feb. 1 issue of the journal Sleep shows that the elevation in estradiol levels that occurs during pregnancy is more pronounced in pregnant women with restless legs syndrome (RLS) than in controls.

2 Feb 2009

Bioidentical hormone facts and perspectives

Public confusion of the benefits and risks of hormone therapy was highlighted once again this week on The Oprah Winfrey Show.

2 Feb 2009

Orexin - natural brain substance - blocks weight gain in mice

Mice with increased levels of a natural brain chemical don't gain weight when fed a high-fat diet, researchers at UT Southwestern Medical Center have found.

29 Jan 2009

Is rapid transition through menopause linked to earlier onset of heart disease?

An evaluation of 203 women as part of the multifaceted Los Angeles Atherosclerosis Study (LAAS) found that those who transitioned more quickly through menopause were at increased risk for a higher rate of progression of "preclinical atherosclerosis" - narrowing of arteries caused by the thickening of their walls.

29 Jan 2009