(HealthDay News) -- While high blood pressure is the more common medical issue, people can also have low blood pressure, medically called hypotension.

(HealthDay News) -- Exercise is a great way to manage the aches and pains of pregnancy, and help prepare your body for the birth of your child.

THURSDAY, Feb. 23 (HealthDay News) -- Noninvasive, CT-guided "virtual" colonoscopy is similar to standard colonoscopy in its ability to detect colorectal cancer and precancerous polyps in people 65 and older, a new study finds.

THURSDAY, Feb. 23 (HealthDay News) -- That constant sneezing you thought was a winter cold might just be the beginning of your spring allergies instead.

THURSDAY, Feb. 23 (HealthDay News) -- A home-visit program for children with asthma reduced hospitalizations and emergency department visits, improved patient outcomes and saved $1.46 for every dollar spent, according to a new study.

THURSDAY, Feb. 23 (HealthDay News) -- Contrary to fairy tale-like depictions in movies and books, reuniting with a former romantic partner is unlikely to make you happy, a new study shows.

THURSDAY, Feb. 23 (HealthDay News) -- Children with autism may benefit from medications to treat children with attention-deficit hyperactivity disorder (ADHD) and other related disorders, but clearer guidelines are needed, a new study shows.

THURSDAY, Feb. 23 (HealthDay News) Compared to other antipsychotic drugs, haloperidol (Haldol) raises the risk of death in elderly patients with dementia, a new study finds.

THURSDAY, Feb. 23 (HealthDay News) -- Rising global temperatures appear to have caused the earliest known horse to shrink in size, new research indicates.

THURSDAY, Feb. 23 (HealthDay News) -- A second company reports that it has developed a prenatal blood test to detect Down syndrome, potentially providing yet another option for pregnant women who want to know whether their unborn child has the condition.

THURSDAY, Feb. 23 (HealthDay News) -- Eating oranges and other citrus fruits may help reduce stroke risk, new research suggests.

THURSDAY, Feb. 23 (HealthDay News) -- If you're receiving kidney dialysis, four new studies suggest that you could benefit from longer or more frequent dialysis sessions.

THURSDAY, Feb. 23 (HealthDay News) -- The avian flu, which killed almost 60 percent of those known to be infected, actually struck many more people worldwide but didn't make them very sick, a new analysis finds.

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

THURSDAY, Feb. 23 (HealthDay News) -- The first molecular evidence linking circadian rhythms -- the "body clock" -- to sudden cardiac death could lead to new methods of diagnosis and therapy to treat or prevent the fatal heart problem, a new study suggests.

THURSDAY, Feb. 23 (HealthDay News) -- A chemical used to strip bathtubs has been associated with more than a dozen deaths of people working as bathtub refinishers in the United States in the last 12 years, according to a new report.

THURSDAY, Feb. 23 (HealthDay News) -- It took a long time to get started, but this winter's flu season is finally here, say experts at the U.S. Centers for Disease Control and Prevention.

THURSDAY, Feb. 23 (HealthDay News) -- Where you live in the United States may influence how well you sleep, researchers report.

THURSDAY, Feb. 23 (HealthDay News) -- Hormonal contraceptives appear to thwart pregnancy just as well in overweight and obese women as those of normal weight despite markedly lower pregnancy-prevention hormone levels among heavier females, a group of reproductive experts said.