(HealthDay News) -- Chronic ear infections are common in young children. But there are steps parents can take to help keep these painful infections from coming back, says the National Institute on Deafness and Other Communication Disorders:

WEDNESDAY, May 9 (HealthDay News) -- An increasing number of wheelchair breakdowns are causing people with spinal cord injuries to be left stranded, hurt or unable to keep their medical appointments, according to a new study.

(HealthDay News) -- When shopping for your child's next bicycle, like a pair of shoes, it's important to buy a bike that fits properly.

WEDNESDAY, May 9 (HealthDay News) -- The pleasurable feeling known as "runner's high" that's triggered by aerobic exercise may have played a role in the evolution of humans' ability to run long distances, a new study suggests.

WEDNESDAY, May 9 (HealthDay News) -- A "spare tire" around the midsection raises the odds of sudden cardiac death in obese people, a new study finds.

WEDNESDAY, May 9 (HealthDay News) -- The widely used class of cholesterol-lowering medications known as statins may help elderly patients with high blood pressure avoid developing atrial fibrillation, a heart rhythm abnormality tied to stroke.

WEDNESDAY, May 9 (HealthDay News) -- One in six cancers worldwide is caused by preventable or treatable infections, a new study finds.

WEDNESDAY, May 9 (HealthDay News) -- Differences in screening account for much of the disparity in both colorectal (colon) cancer incidence and death rates between white and black Americans, a new study says.

WEDNESDAY, May 9 (HealthDay News) -- People with peripheral artery disease have an increased short- and long-term risk of death after undergoing a procedure to open clogged heart arteries, a new study finds.

WEDNESDAY, May 9 (HealthDay News) -- Children who wake up at night and are allowed to fall back asleep in their parents' bed are less likely to be overweight than kids put back into their own bed, a new study says.

WEDNESDAY, May 9 (HealthDay News) -- A case study showing how a grocery bag and its contents caused an outbreak of the stomach bug norovirus highlights the role that inanimate objects can play in such outbreaks, researchers say.

WEDNESDAY, May 9 (HealthDay News) -- The rate at which Americans are hospitalized for stroke has fallen, according to new government statistics released Wednesday.

WEDNESDAY, May 9 (HealthDay News) -- Older obese men with low levels of testosterone can lose weight when levels of the male hormone are restored to normal, a new study suggests.

WEDNESDAY, May 9 (HealthDay News) -- Many women who need emergency contraception after unprotected sex are aware of the "morning-after" pill as an effective way to prevent unwanted pregnancy.

WEDNESDAY, May 9 (HealthDay News) -- Three new studies confirm that the drug lenalidomide can significantly lengthen the time that people with multiple myeloma experience no worsening of their disease, either after having a stem cell transplant or getting chemotherapy.

WEDNESDAY, May 9 (HealthDay News) -- The way someone responds to the first anti-seizure medication given after a diagnosis of epilepsy often predicts how well- controlled their seizures will be over time.

WEDNESDAY, May 9 (HealthDay News) -- U.S. Food and Drug Administration advisers will meet Thursday to decide whether to endorse the use of the drug Truvada as a means to help prevent HIV infection in people at high risk.

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

WEDNESDAY, May 9 (HealthDay News) -- Researchers have completed the first genome sequencing of melanoma, an aggressive and frequently fatal form of skin cancer.

WEDNESDAY, May 9 (HealthDay News) -- In an effort to make sure children are not exposed to any more radiation than necessary when they get X-rays or CT scans, the U.S. Food and Drug Administration has asked the makers of these devices to factor in the safety of pediatric patients when using existing machines and designing new ones.