Scientists have identified for the first time a cell-of-origin for human prostate cancer, a discovery that could result in better predictive and diagnostics tools and the development of new and more effective targeted treatments for the disease.

Men who develop prostate cancer, especially the more aggressive and dangerous forms that spread throughout the body, tend to retain denser bones as they age than men who stay free of the disease, suggests new research.

Dr. Siegel completes the urology consultation on premature ejaculation, focusing on treatment methods….

Only about half of infants born to HIV-infected mothers in some African countries receive a minimum preventive dose of the drug nevirapine to help reduce the risk of mother-to-child HIV transmission, according to a new study.

The chains of sugar molecules, or carbohydrates, that cover the outside of the highly variable HIV virus remain constant, are different from those found on human cells, and could form the basis of a promising new approach to an AIDS vaccine, according to new research.

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Puberty is triggered by pulsatile release of GnRH from specific nerve cells in the the brain. What signals tell these nerve cells to release GnRH in this manner has not been determined, although it has been suggested that hormones associated with good nutritional status (such as IGF-1) have a role. New research has now confirmed that in mice IGF-1 does indeed have a key role in coordinating the timing of puberty onset.

As obesity continues to be a worldwide health risk, one of its "side effects" could include less effective birth control for overweight and obese women who use hormonal contraceptives.

Researchers from the U.S. and abroad used bacteria inherent to the human vaginal tract to develop a live, topical microbicide that may induce production of HIV-1 protein inhibitors and ultimately prevent transmission of the virus.

A clinical trial in Cambodia has found it possible to prolong the survival of untreated HIV-infected adults with very weak immune systems and newly diagnosed tuberculosis by starting anti-HIV therapy two weeks after beginning TB treatment, rather than waiting eight weeks, as has been standard.