WEDNESDAY, Jan. 27 (HealthDay News) -- Boosting co-pays for doctor visits and other outpatient care reduces seniors' use of those services, but it also may have the unintended consequence of sharply increasing hospitalizations, a new study suggests.

WEDNESDAY, Jan. 27 (HealthDay News) -- Vaccinating infants against rotavirus could save the lives of millions of children in developing nations who would otherwise die from the diarrhea-causing disease, two new studies show.

WEDNESDAY, Jan. 27 (HealthDay News) -- Exposure to alcohol in the womb can alter a child's developing pain regulatory system, a new Canadian study suggests.

WEDNESDAY, Jan. 27 (HealthDay News) -- Elderly people who are heavy drinkers are more likely to suffer memory and cognitive problems than mild-to-moderate drinkers, a new study shows.

WEDNESDAY, Jan. 27 (HealthDay News) -- A technique called mirror therapy can help reduce phantom pain in soldiers who've had limbs amputated, a new study shows.

WEDNESDAY, Jan. 27 (HealthDay News) -- Scientists have found a way to make old stem cells in the blood act like young stem cells, a discovery that could lead to ways to slow the aging process.

WEDNESDAY, Jan. 27 (HealthDay News) -- If you just spent $100 on a fancy pair of running shoes, this news may hurt: A new study suggests that running barefoot is actually better for your body because of the way your feet land on the ground.

WEDNESDAY, Jan. 27 (HealthDay News) -- Scientists at Stanford University have succeeded in creating brain nerve cells directly out of skin cells taken from the tails of adult mice.

WEDNESDAY, Jan. 27 (HealthDay News) -- A new imaging technology promises to achieve the long-sought goal of singling out prostate cancers that are life-threatening and require the most aggressive treatment, researchers report.

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

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

WEDNESDAY, Jan. 27 (HealthDay News) -- Scientists say they have fashioned a new test that can detect lung cancer simply on the basis of a tumor-causing change in the odor of bodily fluids.

WEDNESDAY, Jan. 27 (HealthDay News) -- Green tea extract shows promise as a treatment for uterine fibroids, say U.S. researchers who add they'll soon begin human trials of the therapy.

WEDNESDAY, Jan. 27 (HealthDay News) -- Most "Type A" personality traits, such as aggression and competitiveness, boost work stress, but there's one characteristic that actually reduces stress, according to Finnish researchers.

WEDNESDAY, Jan. 27 (HealthDay News) -- A widely used class of antidepressants can cause delayed lactation in new mothers, which means they may need additional support in order to breast-feed their babies, a new study says.

WEDNESDAY, Jan. 27 (HealthDay News) -- Same-sex couples are as good at raising well-adjusted, healthy children as heterosexual couples are, a review of 20 years of social science research finds.

(HealthDay News) -- The appendix is a small organ located near the large intestine, and it can become inflamed (appendicitis), painful and require surgical removal.

(HealthDay News) -- Ear infections are common in children, and may be chronic.