(HealthDay News) -- Many children wet the bed until age 5, and an occasional lapse among even older children is common, experts say.

(HealthDay News) -- An overbite, which doctors call malocclusion, occurs when the top teeth extend too far over the bottom teeth.

THURSDAY, Sept. 23 (HealthDay News) -- It was August 2004, and 24-year-old Ray Johnston was living his boyhood dream.

THURSDAY, Sept. 23 (HealthDay News) -- Direct interaction between immune cells and nerve cells (neurons) appears to play a major role in neuronal damage associated with multiple sclerosis, says a new European study.

THURSDAY, Sept. 23 (HealthDay News) -- A new blood test may offer a quicker, noninvasive way to detect organ rejection in heart and kidney transplant patients before the new organs are damaged, say researchers from the Stanford School of Medicine in California.

THURSDAY, Sept. 23 (HealthDay News) -- Boosting taxes on alcohol leads to lower rates of alcohol-related disease, injury, death and crime, researchers say.

THURSDAY, Sept. 23 (HealthDay News) -- Genetic factors that may predict severe osteoarthritis have been identified by U.S. scientists.

THURSDAY, Sept. 23 (HealthDay News) -- Physical or mental stress one or two days before cancer treatment may reduce the effectiveness of the therapy, researchers have found.

THURSDAY, Sept. 23 (HealthDay News) -- There have been major improvements in the quality of care provided by U.S. hospitals, according to an annual report released this week by the national organization that accredits hospitals and other health-care organizations and programs.

THURSDAY, Sept. 23 (HealthDay News) -- Sexual problems are common among breast cancer survivors, according to new research.

THURSDAY, Sept. 23 (HealthDay News) -- A decline in breast cancer rates among postmenopausal women in Canada earlier this decade coincided with a decrease in the use of hormone replacement therapy, a new study shows.

THURSDAY, Sept. 23 (HealthDay News) -- Distracted driving fatalities caused by cell phone use and texting soared in the space of three years, according to new U.S. government research released Thursday.

THURSDAY, Sept. 23 (HealthDay News) -- Congenital heart defects -- abnormalities present at birth -- contribute to racial differences in rates of newborn deaths in the United States, according to a study released Thursday.

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

THURSDAY, Sept. 23 (HealthDay News) -- In response to major concerns about heart risks, U.S. health officials on Thursday severely restricted use of the diabetes drug rosiglitazone (Avandia) to patients with type 2 diabetes who cannot control their disease on other medications.

THURSDAY, Sept. 23 (HealthDay News) -- Thursday marks the six-month anniversary of enactment of the sweeping U.S. health reform legislation, and the day that a number of key provisions of the law begin to take effect.

THURSDAY, Sept. 23 (HealthDay News) -- For people whose carotid arteries have become narrowed, restricting blood flow to the brain, having a surgical procedure to widen them reduces the risk of stroke over a 10-year period, British researchers report.

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