WEDNESDAY, May 22 (HealthDay News) -- Man's best friend may bring millions more microscopic pals into the average human home, a new study suggests.

WEDNESDAY, May 22 (HealthDay News) -- The success of an imaginative and resourceful device used to save an infant born with a serious airway malformation sheds light on new technology created by the marriage of bioengineering and surgery.

WEDNESDAY, May 22 (HealthDay News) -- Physicians weighing the benefits and risks of CT scans for detecting lung cancer now have more information to help with the decision. A new analysis of a 2010 U.S. study finds that low-dose CT scans pick up significantly more lung tumors than chest X-rays do.

WEDNESDAY, May 22 (HealthDay News) -- People who endure chronic migraines or back pain are more likely to attempt suicide, whether or not they also suffer from depression or another psychiatric condition, according to a new study.

WEDNESDAY, May 22 (HealthDay News) -- Migraines and depression can each cause a great deal of suffering, but new research indicates the combination of the two may be linked to something else entirely -- a smaller brain.

WEDNESDAY, May 22 (HealthDay News) -- In the aftermath of this week's deadly tornado, many people in Oklahoma are not only struggling to care for children and relatives, but also their pets.

WEDNESDAY, May 22 (HealthDay News) -- People with heart failure are more likely to experience poorer health from having a thyroid gland that is even mildly underactive, according to a new study.

WEDNESDAY, May 22 (HealthDay News) -- Anyone who has ever wrestled with athlete's foot knows there is something about feet that fungi seem to like. But scientists now have the first detailed "map" of the fungal groups that live on your skin -- and, yes, your feet are the hottest neighborhood.

WEDNESDAY, May 22 (HealthDay News) -- The American Cancer Society, which is celebrating on Wednesday a century of fighting a disease once viewed as a death sentence, is making a pledge to put itself out of business.

WEDNESDAY, May 22 (HealthDay News) -- Fish oil supplements could help reduce the risk for type 2 diabetes, new research suggests.

WEDNESDAY, May 22 (HealthDay News) -- Children who are physically, sexually or emotionally abused or neglected are at greater risk for obesity later in life, a new review suggests.

WEDNESDAY, May 22 (HealthDay News) -- Over the next two decades, the cost of treating strokes in the United States is expected to more than double, topping more than $180 billion a year, according to new research.

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

WEDNESDAY, May 22 (HealthDay News) -- Over the last decade, the number of American children who die each year awaiting an organ donation dropped by more than half, new research reveals. And increasing numbers of children are receiving donor organs.

WEDNESDAY, May 22 (HealthDay News) -- Children and teens exposed to radiation during CT scans are 24 percent more likely to develop cancer, according to a large, long-term study.

WEDNESDAY, May 22 (HealthDay News) -- Roughly four in 10 uninsured patients who have been diagnosed with chronic obstructive pulmonary disease (COPD) actually do not have the lung disease, a small new study suggests.

(HealthDay News) -- Protecting your vision must be a "priority just like eating healthy and physical activity," urges the U.S. Centers for Disease Control and Prevention.

(HealthDay News) -- The better foods taste, the more likely you are to eat them.