THURSDAY, July 1 (HealthDay News) -- When it comes to treating eating disorders and addictions, the path to recovery may be even harder -- and less straightforward -- for children and teens than it is for adults, experts say.

(HealthDay News) -- Narcolepsy is a nervous system disorder characterized by sudden daytime sleep attacks, and being excessively sleepy. The disorder tends to affect more than one family member.

(HealthDay News) -- Dysphagia is the medical term for having difficulty swallowing.

THURSDAY, July 1 (HealthDay News) -- Corneal transplant rejection is more likely to occur in people who have abnormal vessel growth in their eyes before undergoing the surgery, a team of German and British researchers reports.

WEDNESDAY, June 30 (HealthDay News) -- The movement of three-legged dogs is being studied to help scientists design robots that can adapt in the event of an "injury."

THURSDAY, July 1 (HealthDay News) -- A new study warns that seniors who take a common antibiotic combination for urinary tract infections are at increased risk of developing potentially life-threatening high potassium levels.

THURSDAY, July 1 (HealthDay News) -- A gene that regulates human brain development has been identified by U.S. researchers.

THURSDAY, July 1 (HealthDay News) -- More money may improve people's satisfaction with life, but it won't necessarily help them enjoy it, suggests a new study.

THURSDAY, July 1 (HealthDay News) -- People with asthma appear to have subtle differences in a gene that encodes a protein responsible for deciding whether particular immune cells live or die, new research reveals.

THURSDAY, July 1 (HealthDay News) -- Too much Wheel of Fortune and CSI may not be good for seniors' mental state, new research suggests.

THURSDAY, July 1 (HealthDay News) -- Black cancer patients in the United States are up to two times more likely to die prematurely from their disease than patients of other races -- a disparity linked to factors that include patients, doctors and hospitals, a new review from the University of Michigan shows.

WEDNESDAY, June 30 (HealthDay News) -- Adding to the ongoing debate on the usefulness of the prostate-specific antigen (PSA) blood test for prostate cancer, new research from Sweden finds the screen cuts lives lost to the disease by almost half.

THURSDAY, July 1 (HealthDay News) -- It took only a few thousand years for Tibetans to develop gene mutations that help them cope with low oxygen levels at high altitudes, a new study found.

THURSDAY, July 1 (HealthDay News) -- Scientists have grouped together a series of genetic variants that can predict with 77 percent accuracy whether or not a person will live to 100 years of age.

THURSDAY, July 1 (HealthDay News) -- Preliminary research suggests that a new drug treatment shrinks uterine fibroids and helps women with the non-cancerous tumors retain their fertility.

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

THURSDAY, July 1 (HealthDay News) -- The number of hospital emergency department visits associated with underage drinking nearly double over the Fourth of July weekend, a new U.S. government study says.

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

THURSDAY, July 1 (HealthDay News) -- Complications from stroke, such as pneumonia or a secondary stroke, can shorten the lives of patients by an average of two years, researchers report.

THURSDAY, July 1 (HealthDay News) -- The number of children ages 12 months to 23 months immunized against hepatitis A increased in the United States, and rates of hepatitis A reached a record low after new vaccination recommendations were issued a few years ago, a new federal report says.

THURSDAY, July 1 (HealthDay News) -- After having sex with a soldier recently vaccinated against smallpox, a young woman in Washington state developed an illness caused by the vaccinia virus used in the shot, U.S. health officials report.