FRIDAY, July 16 (HealthDay News) -- Being poorer and having co-existing health problems are among the reasons why black colorectal cancer patients have lower survival rates than whites or Asians in the United States, new study findings suggest.

(HealthDay News) -- Aneurysm is the medical term for a bulging area of an artery that's stretched out like a balloon. It occurs when the artery wall becomes weak or damaged.

(HealthDay News) -- Endometriosis is a painful condition characterized by uterine tissue that grows outside a woman's uterus.

FRIDAY, July 16 (HealthDay News) -- Women with the most serious type of angina are three times as likely as men with the same condition to develop severe coronary artery disease (CAD), researchers have found.

FRIDAY, July 16 (HealthDay News) -- Knee implants perform well for at least 15 to 20 years in more than 95 percent of patients but can fail for five main reasons, a U.S. expert reports.

FRIDAY, July 16 (HealthDay News) -- Youngsters and teens who lack social problem-solving skills are more likely to become bullies, victims or both, while those who also do poorly at school are even more likely to become bullies, according to a new study.

FRIDAY, July 16 (HealthDay News) -- A new survey suggests that U.S. acute care hospitals can best minimize the risks for the spread of dangerous in-hospital infections if they harness automated computer technologies to quickly identify, track and respond to infections as they occur.

THURSDAY, July 15 (HealthDay News) -- Each person has a unique collection of what could be described as friendly viruses in their lower intestine, new research shows.

FRIDAY, July 16 (HealthDay News) -- Seniors whose drug costs push them into Medicare's "donut hole" and parents whose children are uninsurable due to pre-existing health conditions are among the first Americans to see tangible effects of the nation's historic health reform law.

FRIDAY, July 16 (HealthDay News) -- Nervous about an upcoming presentation at work, or concerned you'll strike out at the company softball game?

THURSDAY, July 15 (HealthDay News) -- Among HIV patients with a high level of CD4 immune cells, those who aren't taking antiretroviral therapy have a moderately increased risk of death, a new study has found.

FRIDAY, July 16 (HealthDay News) -- Researchers have devised new ways to gauge the short-term survival of HIV patients in sub-Saharan Africa during their first year of antiretroviral drug therapy.

FRIDAY, July 16 (HealthDay News) -- New research indicates that major American fast food chains have substantially cut down on the use of unhealthful trans fats in their cooking oils.

FRIDAY, July 16 (HealthDay News) -- High heels may turn heads, but new research shows the long-term cost of wearing them is even steeper than the sky-high price tag of some coveted brands.

FRIDAY, July 16 (HealthDay News) -- Getting tested for inflammatory bowel disease through an endoscopy isn't a pleasant experience, but a new review of existing research suggests that a simple stool test may help doctors figure out who needs the more extensive screening.

Here are some of the latest health and medical news developments, compiled by the editors of HealthDay: