TUESDAY, Sept. 21 (HealthDay News) -- As people crowd into theaters for the latest wave of 3-D movies, everyone seems to be oohing and ahhing over the visual feast provided by Hollywood's improved 3-D technology.

(HealthDay News) -- Food allergies can range from mild to life-threatening. Parents of children with severe food allergies should prepare faculty at the child's school.

(HealthDay News) -- Dust mites, each smaller than a period at the end of a printed sentence, produce waste that's a common cause of allergies and asthma.

TUESDAY, Sept. 21 (HealthDay News) -- The way that people perceive others' emotions can vary by culture, a new study finds.

TUESDAY, Sept. 21 (HealthDay News) -- A delay of 12 or more hours before removing the appendix of patients with acute appendicitis does not lead to poorer outcomes, a new study shows.

TUESDAY, Sept. 21 (HealthDay News) -- Breathing obstructions and dissatisfaction with the symmetry of the tip their nose are common reasons why people want a second operation to revise their initial cosmetic nose surgery (rhinoplasty), researchers say.

TUESDAY, Sept. 21 (HealthDay News) -- Students who are victims of cyber bullying at school are more likely to suffer depression than their tormentors, according to researchers.

TUESDAY, Sept. 21 (HealthDay News) -- Researchers have identified risk factors for the development of potentially fatal blood clots following total hip replacement surgery.

TUESDAY, Sept. 21 (HealthDay News) -- Biomarkers associated with increased risk of relapse and death among patients with severe aplastic anemia have been identified by U.S. researchers.

TUESDAY, Sept. 21 (HealthDay News) -- The global cost of Alzheimer's disease and related dementias in 2010 is an estimated $604 billion, according to a report released Tuesday by Alzheimer's Disease International.

TUESDAY, Sept. 21 (HealthDay News) -- For years, researchers have observed that U.S. suicide rates appear to be highest among residents of the so-called "Intermountain West" region of the country. Now, fresh research points to a possible explanation: high altitudes.

TUESDAY, Sept. 21 (HealthDay News) -- A new study finds it's safe to take the blood thinner Plavix with proton-pump inhibitors like Nexium, contrary to recent research that said the combination compromised Plavix's effectiveness.

TUESDAY, Sept. 21 (HealthDay News) -- High blood sugar levels can increase the risk of surgical site infections in patients having general surgery, researchers report.

TUESDAY, Sept. 21 (HealthDay News) -- Living with heart failure can put a patient on overload. The rigors of having to lose weight, strictly limit salt intake, exercise and take a half-dozen or more medications lead many people to disregard their doctor's orders.

TUESDAY, Sept. 21 (HealthDay News) -- U.S. Food and Drug Administration advisers continued two days of hearings Tuesday on whether to recommend approval of genetically modified salmon for humans to eat.

TUESDAY, Sept. 21 (HealthDay News) -- Continuous treatment with imatinib (Gleevec) is recommended for patients with advanced gastrointestinal cancer, a new study 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: