Docs Who Own MRIs Order Far More Scans

WEDNESDAY, Nov. 30 (HealthDay News) -- Patients are much more likely to undergo unnecessary medical imaging exams if the tests are ordered by doctors with a financial interest in the imaging equipment, according to a new study.

Health Tip: Recovering From Pneumonia

(HealthDay News) -- Pneumonia can be a life-threatening infection, and no matter how severe your case is, your body needs time to heal.

Health Tip: Help Your Child Prepare for a Sibling

(HealthDay News) -- It's common for children to feel jealous of a new sibling, including acting out and misbehaving.

Clogged Arteries Pose Different Dangers for Men, Women: Study

WEDNESDAY, Nov. 30 (HealthDay News) -- Not all clogged arteries are created equal, with women and men facing different heart risks even when they have the same amount of coronary plaque, a new study suggests.

Toddlers Taking HIV Drugs Have Higher Cholesterol

WEDNESDAY, Nov. 30 (HealthDay News) -- Toddlers who take anti-HIV drugs have higher cholesterol levels than those who do not have HIV, a new study shows.

Scans May Discern Between Two Types of Dementia

WEDNESDAY, Nov. 30 (HealthDay News) -- In the vast majority of cases, researchers can distinguish between Alzheimer's and another form of dementia with shared symptoms by using a specific type of PET scan that looks for evidence of plaque in the brain, new research suggests.

Non-Fried Fish Might Help Ward Off Alzheimer's: Study

WEDNESDAY, Nov. 30 (HealthDay News) -- Eating baked or broiled fish as little as once a week may boost brain health and lower the risk for mild cognitive impairment and Alzheimer's disease, new brain scan research suggests.

Most U.S. Drivers Engage in 'Distracting' Behaviors: Poll

WEDNESDAY, Nov. 30 (HealthDay News) -- Whether it's talking on cellphones, fiddling with food and drink or doing some last-minute grooming, a large majority of adult drivers in the United States admit to being dangerously distracted while behind the wheel, a new poll shows.

Many Suicidal Teens Make First Try Before High School

WEDNESDAY, Nov. 30 (HealthDay News) -- About 40 percent of young adults who've attempted suicide made their first attempt before high school, which suggests that suicidal thoughts and behavior may begin much younger than previously believed, according to a new study.

Lobular Breast Cancer Linked to Paternal Cancer History

WEDNESDAY, Nov. 30 (HealthDay News) -- Women with lobular breast cancer are nearly twice as likely as those with other forms of breast cancer to have a father who had cancer, especially prostate cancer, a new study finds.

Infant Vaccines May Work Better If Given in Afternoon

WEDNESDAY, Nov. 30 (HealthDay News) -- As many parents can attest, a rough night may follow when their baby has been to the doctor for their first shots, due to increased fussiness or fever from the immunizations. But a new study suggests that the time of day that the shots are given may make a difference in both sleep and immune response.

Recovery From Concussions in Young Athletes May Take Longer Than Thought

WEDNESDAY, Nov. 30 (HealthDay News) -- New research shows how a concussion can cause damage in a young athlete's brain that may last longer than thought.

Women's High Blood Sugar Linked to Colorectal Cancer: Study

WEDNESDAY, Nov. 30 (HealthDay News) -- There may be a link between high blood sugar levels and an increased risk of colorectal cancer in older women, a new study finds.

New Hip Implants No Better Than Older Ones, Study Finds

TUESDAY, Nov. 29 (HealthDay News) -- No matter the material, all types of hip replacement devices appear to work the same, a new analysis finds.

Drug May Dampen Dangerous Side Effect of Stem Cell Transplants

WEDNESDAY, Nov. 30 (HealthDay News) -- Preliminary research suggests that a drug typically used to kickstart the immune system may help cancer patients who receive stem cell transplants and then develop a potentially deadly side effect.

Health Highlights: Nov. 30, 2011

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

Self-Monitoring of Blood Thinner May Halve Clot Risk

WEDNESDAY, Nov. 30 (HealthDay News) -- People taking the blood-thinning drug warfarin who monitor their own blood and adjust their dosage can reduce the risk of blood clots by half, British researchers report.

Advocates Push for Greater Awareness of HIV/AIDS

WEDNESDAY, Nov. 30 (HealthDay News) -- Advocates for HIV/AIDS research and treatment met Wednesday to discuss how to reduce the spread of the disease in the United States, improve access to better care and raise general awareness of the ongoing epidemic.

Arsenic Detected in Apple, Grape Juice Samples

WEDNESDAY, Nov. 30 (HealthDay News) -- The debate over the safety of fruit juice consumed by Americans escalated Wednesday with the release of a Consumer Reports study that found many apple and grape juice samples tainted with arsenic.