The number of gay men having unprotected anal sex is increasing dramatically, according to researchers at the University of California, San Francisco.

Researchers have long known that the body can activate its own form of pain relief in response to painful stimuli. Now, UC San Francisco investigators have determined that, in rats, this long-lasting relief is produced by the brain's "reward" pathway...

In a large population-based study conducted on non-Hodgkin's lymphoma, researchers at the University of California, San Francisco found that exposure to certain environmental factors that affect the immune system could decrease a person's risk of developing the disease.

People who lose jobs often experience a worsening of health by the following year and those with poor health are more likely to lose jobs by the next year, according to results of the second California Work and Health Survey (CWHS) led by UCSF researchers.

Hundreds of women in California who experience domestic violence are not getting the attention they need from their primary care physicians, according to a study released by the University of California, San Francisco.

One in seven U.S. children aged 10 to 18 is not covered by health insurance. That figure has not changed in more than a decade, even though government-funded health plans now cover more children and teens.

Medical scientists have uncovered a probable link between pain from surgery and the likelihood of infection...

A virus found primarily in injection drug users and a small number of Native Americans may increase the incidence of infectious diseases, according to a multi-center, longitudinal study headed by the University of California, San Francisco.

The hormone best known for its role in inducing labor may influence our ability to bond with others, according to researchers at the University of California, San Francisco.

To maintain quality of patient care in the future, changes need to be made in the training and use of allied and auxiliary health care workers -- hospital support staff such as physical therapists, technicians, aides, and assistants...