(HealthDay News) -- Diabetes insipidus results when the brain doesn't produce enough antidiuretic hormone, which controls the amount of water in the blood and urine.

(HealthDay News) -- Pressure ulcers, commonly called bed sores, are wounds that develop on the skin from staying in one position without shifting your weight.

FRIDAY, Nov. 19 (HealthDay News) Hardcore aficionados of particular brands feel so strongly about their choice that they can suffer separation anxiety if they have to buy a different brand, a new study suggests.

FRIDAY, Nov. 19 (HealthDay News) -- As more young people ride motorcycles without wearing helmets in the United States, more serious head injuries and long-term disabilities from crashes are creating huge medical costs, two new companion studies show.

FRIDAY, Nov. 19 (HealthDay News) -- Among patients with end-stage kidney disease, those who are admitted to the hospital over a weekend are more likely to die earlier than those admitted on weekdays, new research suggests.

FRIDAY, Nov. 19 (HealthDay News) -- Among patients with kidney disease in the United States, certain racial/ethnic groups, including blacks and some Hispanics, get sicker faster than whites do, researchers have found.

FRIDAY, Nov. 19 (HealthDay News) -- Computer imaging software gives patients a fairly good idea of how they'll look after a "nose job," and the majority value the preview process, a new study finds.

FRIDAY, Nov. 19 (HealthDay News) -- Male teens with disruptive behavior disorders have a one-third increased risk of being seriously injured in a traffic crash, either as a driver or a pedestrian, new research has found.

FRIDAY, Nov. 19 (HealthDay News) -- Homeless youth who were sexually abused as children may engage in sex at a young age because they believe sex is a way to get people to like them, a new study suggests.

FRIDAY, Nov. 19 (HealthDay News) -- Advances in drugs and medical technology have greatly improved the ability to save lives, according to a survey of physicians in Pennsylvania.

FRIDAY, Nov. 19 (HealthDay News) -- Children today take longer to mature than Neanderthal children did, which may have given modern humans an evolutionary advantage, researchers suggest.

THURSDAY, Nov. 18 (HealthDay News) -- Social networking might have triggered asthma attacks for one young Italian man, who experienced breathing troubles whenever he accessed an ex-girlfriend's Facebook page.

FRIDAY, Nov. 19 (HealthDay News) -- People who develop gastroenteritis from E. coli-contaminated drinking water are at increased risk for high blood pressure, kidney problems and heart disease later in life, say Canadian researchers.

FRIDAY, Nov. 19 (HealthDay News) -- With alcohol-related deaths and injuries rising on U.S. college campuses, college officials are trying various ways to stem the tide of heavy drinking. One effort that targeted off-campus boozing shows some promise, researchers say.

FRIDAY, Nov. 19 (HealthDay News) -- Kidney disease patients, once cautioned against alcohol use, can relax and have a drink a two, but they also need to be mindful of their weight, two new Dutch studies show.

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

FRIDAY, Nov. 19 (HealthDay News) -- Xgeva (denosumab) has been approved by the U.S. Food and Drug Administration to prevent fractures and other skeletal complications in people with advanced cancer that has metastasized (spread) to the bones.

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

FRIDAY, Nov. 19 (HealthDay News) -- The opioid-based painkillers Darvon and Darvocet are being withdrawn from the U.S. market because they've been linked to serious and potentially deadly heart rhythms, federal officials said Friday.

FRIDAY, Nov. 19 (HealthDay News) -- A new, small study suggests that the main ingredient in cough syrup might help doctors determine the best dose of tamoxifen, a drug commonly used to prevent and treat breast cancer.