How Many Calories in Your Fast-Food Meal? Guess Again
Diners underestimated by as much as 500 calories in study

Modified Polio Virus May Help Fight Brain Tumors, Study Suggests
Treatment is harmless to normal cells but attacks cancer cells; finding is preliminary, researchers say

Glucosamine Supplements Tied to Risk of Eye Condition
Seniors taking them had side effect that has been linked to glaucoma, small study finds

Scientists Can't Replicate Surprising Finding on Alzheimer's Treatment
Skin cancer drug had no effect on brain plaques in mice, three separate research teams report

Shortage of Key Drug Hampering U.S. Efforts to Control TB: Report
Many health departments have altered treatment practices; CDC officials working to solve the problem

Diet Soda Habit as Bad for Teeth as Meth Addiction, Study Claims
Acid in both can erode teeth over time

U.S. Teen Birth Rate Plummets: Report
Since 1991, rate has dropped by nearly half, health officials find

People With Borderline Personality Disorder May Misinterpret Facial Emotions
In studies, patients sometimes saw anger in a 'neutral' face and reacted to that threat

Got an Itch? Mouse Study May Help Explain Why
Itch is a sensation distinct from others, such as pain, researchers say

U.S. School Kids Should Get Hour of Exercise Daily: Report
Physical activity helps them do better academically and socially, experts say

Chronic Heartburn May Raise Odds for Throat Cancer: Study
But simple antacids appear to lower the risk, researchers report

Statins May Hamper Workout Results
Overweight people on cholesterol-lowering drugs saw less fitness improvement than others in small study

Low Prenatal Iodine May Affect Child's Brain Development
Mothers with deficiency had kids with lower IQs and reading ability, researchers say

Too Few Kids Use Fast-Food Calorie Info, Study Finds
Girls and obese children are likelier to take advantage of this knowledge

CT Scans Reduce Lung Cancer Deaths, Study Confirms
But questions remain about widespread screening

Docs Use 3-D Printer to Create Lifesaving Airway Device for Infant
Rare, worsening condition led to emergency FDA approval to use splint

Migraine, Chronic Back Pain Tied to Higher Suicide Risk
Hopelessness, disability may play a role in feelings of despair, study finds

Your Pooch Could Raise Your Home's Bacteria Count
Study found more germs and a wider variety of bacterial types in houses with dogs