(HealthDay News) -- To stay safe and alert behind the wheel, it's important to avoid distractions while you drive.

(HealthDay News) -- Though decongestant medications can offer much-needed relief when mucus plugs your nose, the drugs could be harmful to some people.

TUESDAY, Feb. 8 (HealthDay News) -- Repeat cases of shingles may be more common than suspected, contends a new study that challenges the long-held belief that people only get shingles once in a lifetime.

TUESDAY, Feb. 8 (HealthDay News) -- Medication errors in homes for the elderly are much less likely to occur if residents are given pills or capsules dispensed from a monitored dosage system, finds a new British study.

TUESDAY, Feb. 8 (HealthDay News) -- As many as 75 percent of hospital tests are not followed up and this failure can have serious consequences for patients, including delayed or missed diagnoses and even death, according to a new study.

TUESDAY, Feb. 8 (HealthDay News) -- Teens who are already popular but trying to become even more so are the most likely to bully other kids, new research suggests.

TUESDAY, Feb. 8 (HealthDay News) -- Babies who are exposed to HIV at birth but don't become infected with the virus have lower levels of antibodies to diseases such as whooping cough, tetanus and pneumococcus, a new study finds.

TUESDAY, Feb. 8 (HealthDay News) -- In pregnant women, even small amounts of lead in the blood may cause significantly higher blood pressure, new research suggests.

TUESDAY, Feb. 8 (HealthDay News) -- People whose genetic make-up produces lower levels of a brain molecule called neuropeptide Y (NPY) may be at increased risk for major depression, says a new study.

TUESDAY, Feb. 8 (HealthDay News) -- Heavy drinking in the late teen years often continues into adulthood and is associated with long-term alcohol-related problems, researchers warn.

MONDAY, Feb. 7 (HealthDay News) -- Feeding children lots of fatty, sugary and processed foods may lower their IQ, while a diet rich in vitamins and nutrients appears to boost it, British researchers say.

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

TUESDAY, Feb. 8 (HealthDay News) -- Removing many lymph nodes may not be necessary in women with early breast cancer who also undergo a lumpectomy to remove the mass, followed by radiation.

TUESDAY, Feb. 7 (HealthDay News) -- A small group of 22 British volunteers is testing out a new "universal" influenza vaccine: one that might be effective against all strains of flu and wouldn't have to be reformulated each year, as now happens.

TUESDAY, Feb. 8 (HealthDay News) -- High levels of certain blood enzymes following coronary-artery bypass surgery can signal an increased risk of death, a new study suggests.

TUESDAY, Feb. 8 (HealthDay News) -- Men who have had cancer are at a slightly higher risk of bearing children with congenital problems such as a cleft palate compared to their peers with no history of cancer, according to new research.

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

TUESDAY, Feb. 8 (HealthDay News) -- An injection of local anesthetic can be made much less painful if it is warmed beforehand, Canadian researchers report.

TUESDAY, Feb. 8 (HealthDay News) -- The first heart pacemaker designed to be used safely during certain MRI exams has been approved by the U.S. Food and Drug Administration.

TUESDAY, Feb. 8 (HealthDay News) --The U.S. Food and Drug Administration on Tuesday approved the first heart pacemaker designed to be safe during some MRI scans.

TUESDAY, Feb. 8 (HealthDay News) -- President Barack Obama has kicked the smoking habit for almost one full year, First Lady Michelle Obama told the press on Tuesday.