(HealthDay News) -- Children are thought to be no less prone than adults to dull or throbbing pains of the head.

FRIDAY, Sept. 30 (HealthDay News) -- Blood clots affect as many as one in five U.S. cancer patients and sharply increase the cost of their care, a new study has found.

(HealthDay News) -- Being emotionally healthy can make it easier to build lasting relationships, help you feel good about yourself and deal with the problems of everyday life.

FRIDAY, Sept. 30 (HealthDay News) -- Yawning may be a natural way of regulating brain temperature, a new study suggests.

FRIDAY, Sept. 30 (HealthDay News) -- Louise Borke learned that her infant son had Down Syndrome when he was just a few days old.

FRIDAY, Sept. 30 (HealthDay News) -- Black women are likely to develop physical limitations earlier in life than others their age, according to a new study.

FRIDAY, Sept. 30 (HealthDay News) -- Unspoken clues -- like behavior and appearance -- influence the doctor-patient relationship, according to a new study. Researchers from the University of Michigan found subtle, nonverbal signs not only have an impact on how patients view their relationship with their doctor, they also affect doctors' medical decisions.

FRIDAY, Sept. 30 (HealthDay News) -- Going to bed early and waking up early may help teens stay thinner and more physically active than their night-owl peers, and this was the case even when both groups got the same amount of sleep, researchers say.

THURSDAY, Sept. 29 (HealthDay News) -- The U.S. Food and Drug Administration is once again cracking down on eye care professionals who make false safety claims and promises about the popular LASIK eye surgery.

FRIDAY, Sept. 30 (HealthDay News) -- New research adds to the growing evidence that anesthesia and surgery may be associated with the progression of chronic brain diseases, particularly Alzheimer's disease.

FRIDAY, Sept. 30 (HealthDay News) -- Since the 9/11 tragedy and the anthrax scare that followed in its wake, Americans have lived with the potential threat of another, possibly more serious, anthrax attack.

FRIDAY, Sept. 30 (HealthDay News) -- People taking oral steroids double their risk for severe vitamin D deficiency, which can lead to bone disease or muscle weakness, a new study indicates.

FRIDAY, Sept. 30 (HealthDay News) -- A new study claims that tobacco companies knew for years that cigarette smoke contained dangerous and potentially deadly radioactivity but purposefully didn't let the public know.

FRIDAY, Sept. 30 (HealthDay News) -- People who use cocaine are 45 percent more likely to develop open-angle glaucoma, the most common form of the eye disease, according to a new study.

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

FRIDAY, Sept. 30 (HealthDay News) -- As health officials wrestle with a listeria outbreak traced to cantaloupes from Colorado, Alaska regulators say chopped romaine lettuce shipped from California has been recalled because of concerns the salad greens may carry the potentially fatal bacteria.

FRIDAY, Sept. 30 (HealthDay News) -- Prescription drug shortages in the United States, which reached a record high last year, are getting worse, the U.S. Food and Drug Administration said Friday.

FRIDAY, Sept. 30 (HealthDay News) -- Exposing Alzheimer's patients to "humor therapy" appears as effective as psychiatric drugs in reducing the agitation that often plagues those struggling with dementia, new Australian research suggests.