WEDNESDAY, July 13 (HealthDay News) -- Top U.S. officials who have taken a hard line against air traffic controllers napping on the job are missing an opportunity to improve air safety, sleep experts say.

WEDNESDAY, July 13 (HealthDay News) -- Wearing flip-flops and baseball caps can increase your risk of skin cancer, an expert warns.

(HealthDay News) -- Pulmonary hypertension occurs when the arteries inside the lungs narrow, restricting blood flow and increasing blood pressure in those arteries.

(HealthDay News) -- Binge eating disorder means eating abnormally large amounts of food, eating extremely quickly and eating beyond the point of fullness.

WEDNESDAY, July 13 (HealthDay News) -- For patients taking the heart rhythm drug amiodarone (Cordarone), generic versions of the drug do not cause more incidents of thyroid dysfunction than the brand-name medication, researchers report.

WEDNESDAY, July 13 (HealthDay News) -- A small pilot study of wireless mobile sensors used by a group of retirees suggests the technology may be useful in detecting meaningful changes in seniors' health, researchers at Dartmouth College report.

WEDNESDAY, July 13 (HealthDay News) -- People with HIV are at increased risk for blood vessel blockages, and new research shows heart ultrasounds can help determine if these patients are more likely to suffer a serious or fatal heart attack.

WEDNESDAY, July 13 (HealthDay News) -- People with Parkinson's disease are unable to make quick movements, but virtual reality- and physical reality-based therapies may provide the stimulus needed to help them move faster, new research suggests.

WEDNESDAY, July 13 (HealthDay News) -- Rural workers are often forced to choose between their health or the health of a loved one and their jobs, researchers report.

WEDNESDAY, July 13 (HealthDay News) -- A new European study finds that the supercharged vaccines used to fight the H1N1 epidemic in 2009 may not have boosted the risk for a disease known as Guillain-Barre syndrome after all.

WEDNESDAY, July 13 (HealthDay News) -- People with autism and their siblings share a similar pattern of reduced activity in an area of the brain associated with empathy, researchers say.

WEDNESDAY, July 13 (HealthDay News) -- A new study finds that the power of the placebo effect left asthma patients thinking that real and fake drugs were doing the same level of good, even though the real medication actually had a much greater physical effect on their lungs.

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

WEDNESDAY, July 13 (HealthDay News) -- More than 33 million Americans live in areas with too few dentists to meet their needs, and millions of children and retirees lack access to good oral health care because they can't afford it, a new report finds.

WEDNESDAY, July 13 (HealthDay News) -- Giving antiretroviral drugs to heterosexuals at high risk of HIV infection can significantly reduce the chance they will develop the AIDS-causing virus, two new studies suggest.

WEDNESDAY, July 13 (HealthDay News) -- For men who have prostate cancer that's considered "intermediate risk," radiation plus four months of hormone therapy appears to improve survival, a new study finds.

WEDNESDAY, July 13 (HealthDay News) -- A mesh device used to support the pelvic organs and help ease incontinence in women appears to carry more risks than previously thought, the U.S. Food and Drug Administration announced Wednesday.