GENERALHEALTH:Research Illuminates How the Human Neck Developed: Using genetics, scientists discovered anatomical changes that helped the brain advance in people

More Women to Get Health Insurance Under Affordable Care Act: Report finds 15 million will get coverage, while 14.5 million will get better coverage

Too Soon to Tell Whether Dengue Fever Will Spread in U.S.: Not clear yet where 46 cases in Florida came from, CDC official says

H1N1 Protection in Coming Season's Flu Vaccines: FDA: Just one shot should shield against multiple strains, agency says

Many Horse Lovers Saddle Up Unsafely: Nearly a third were injured over past 3 years, largely in preventable accidents, expert finds

Doctors, Patients Rarely on Same Page: Physicians often mistaken about patients' beliefs, feelings about their illness

Americans Still Confused About Health Reform: Harris Interactive/HealthDay poll finds many don't know what's in -- and not in -- the new legislation

Black Teens May Need Higher Vitamin D Supplementation: Even with sun exposure, levels were deficient in this vulnerable group, researchers say

Scientists Use Stem Cells to Help Rabbits Grow New Joints: Animals were up and hopping again within weeks, but experts say human trials still far off

Increased Risk of Violence Among Unsupervised Teen Groups: Hanging out with no adult presence a recipe for violence even in 'good' neighborhoods, study finds

Knee, Hip Replacements May Aid Weight Loss: Study: Healthier lifestyle may be an added bonus for patients following joint surgery, researcher suggests

Higher Education Level May Help Brain Cope With Dementia: Physical changes occur in all aging brains, but more schooling seems to delay symptoms, study found

New Drugs Eyed for Huntington's Disease: But tests on mice needed first, researchers say

For Some Female Birds, Infidelity Boosts Offspring's Survival: Seychelles warblers pair up for life, but females often go elsewhere to sire their young, research shows

Could Drinking Help Thwart Rheumatoid Arthritis?: Early study suggests it might, but that's no reason to imbibe heavily, experts say

Chest Compressions Alone Best With CPR: Studies support bystanders not using mouth-to-mouth breathing

Anesthesia's Role in Hip, Knee Replacement Infections Studied: Greater risk noted in patients who had general versus spinal/epidural method, researchers say

FDA Cites Its Food Safety Web Site: More than 100 problems identified so far, agency says

Brain Structure Changes Found in Irritable Bowel Patients: Comparison scans between women with and without disorder show differences in gray matter: report

Complications From Weight-Loss Surgery 'Relatively Low': Michigan study finds high-volume hospitals, surgeons reporting fewest problems