FRIDAY, July 23 (HealthDay News) -- People concerned about heart disease rightfully fret about their cholesterol, blood pressure and blood sugar levels, but there's another overarching problem that could eclipse all those risk factors.

FRIDAY, July 23 (HealthDay News) -- Things hit the "big crescendo" for Marci Williams in December 2005.

FRIDAY, July 23 (HealthDay News) -- Teens with sunnier outlooks also tend to be healthier, a new study finds.

(HealthDay News) -- Social anxiety disorder (sometimes called social phobia) is characterized by extreme anxiety and self-consciousness in social situations.

(HealthDay News) -- Rosacea is a skin condition characterized by persistent flushing and redness of the face, head and neck.

FRIDAY, July 23 (HealthDay News) -- As the nation prepares to mark the 20th anniversary of the Americans with Disabilities Act on Monday, a new survey finds that the law has not made meaningful progress in improving the quality of life for people with disabilities.

FRIDAY, July 23 (HealthDay News) -- U.S. colleges aren't doing enough to limit student access to alcohol, a new study contends.

FRIDAY, July 23 (HealthDay News) -- People with schizophrenia are at increased risk for medical injuries while staying in the hospital, a new study shows.

FRIDAY, July 23 (HealthDay News) -- This summer's exceptionally hot weather means children are at increased risk for dehydration, a pediatric expert warns.

THURSDAY, July 22 (HealthDay News) -- In a new study that looked at the use of nitric oxide in premature infants, researchers found that lung function didn't improve in babies who were not black, although one expert said the treatment may help some infants.

THURSDAY, July 22 (HealthDay News) -- Women who are childhood cancer survivors face a greater risk of having a stillborn child if their uterus or ovaries were exposed to radiation during their treatments, a new study finds.

FRIDAY, July 23 (HealthDay News) -- Some HIV-positive women who want to have children feel stigmatized by their doctors, new research has found.

FRIDAY, July 23 (HealthDay News) -- People planning to visit Florida should take measures to protect themselves against dengue fever by preventing mosquito bites, advises an expert.

FRIDAY, July 23 (HealthDay News) -- Doctors add as much as $10,000 to patient's medical costs by strictly following guidelines regarding the diagnosis of arthritis-related back pain, a new study suggests.

FRIDAY, July 23 (HealthDay News) -- Women of African heritage bear a greater risk for a more aggressive and difficult-to-treat form of breast cancer, new research suggests.

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

(HealthDay News) -- Here are the latest clinical trials, courtesy of ClinicalConnection.com:

FRIDAY, July 23 (HealthDay News) -- Two advisory panels to the U.S. Food and Drug Administration voted Friday against the agency's plan to curb abuse of opioid painkillers.

FRIDAY, July 23 (HealthDay News) -- The first generic version of enoxaparin sodium injection (brand name: Lovenox), a blood-thinning drug designed to prevent deep vein thrombosis, has been approved by the U.S. Food and Drug Administration.