ALLERGY, RESPIRATORY
Folic Acid Might Offer Allergy Relief
Using Music and Sports to Improve Kids' Asthma
Climate Change Could Sting Allergy, Asthma Sufferers
ALTERNATIVE MEDICINE
Wristbands May Lessen Nausea After Radiation
The Zen Way to Pain Relief
Memory Loss Help from Brain Supplement Prevagen
ANIMAL CARE
Separation Anxiety, Canine-Style
'Comfort Dogs' Come to Emotional Rescue
Animals Respond to Acupuncture's Healing Touch
BONES & JOINTS
Most Kids With Type 1 Diabetes Lack Vitamin D
High Birth Weight Doubles Risk of Rheumatoid Arthritis
New Clues to How Fish Oils Help Arthritis Patients
CANCER
Red Meat No No No But Oily Fish Yes Yes Yes
Bitter Melon Extract May Slow, Stop Breast Cancer
Drinking Green Tea May Slow Prostate Cancer
CAREGIVING
MRSA Infections Spreading to Kids in Community
Older Caregivers Prone to Worse Sleep Patterns
Diabetes Epidemic Now Poses Challenges for Nursing Homes
CIRCULATORY SYSTEM
Vitamins Do Older Women Little Good
Review Confirms Links Between Diet, Heart Health
Years of Exposure to Traffic Pollution Raises Blood Pressure
COSMETIC
Study Evaluates Laser Therapies for Hair Removal
Wrinkle Fillers Need Better Label Warnings: FDA Panel
New Genetic Links to Baldness Discovered
DENTAL, ORAL
Gum Disease Treatment Doesn't Cut Preterm Birth Risk
Obesity Boosts Gum Disease Risk
Periodontal Disease Impacts Whole Health
DIABETES
Chamomile Tea May Ward Off Diabetes Damage
Vitamin K Slows Insulin Resistance in Older Men
Spices, Herbs Boost Health for Diabetics
DIET, NUTRITION
Vitamin D May Help Keep Aging at Bay
Asparagus May Ease Hangover
Indian Spice May Thwart Liver Damage
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
Cleaning House May Be Risky for Women With Asthma
Chemical in Plastics May Cause Fertility Problems
Climate Change Could Sting Allergy, Asthma Sufferers
EYE CARE, VISION
When Gauging Age, the Eyes Have It
Too Much Sun, Too Few Antioxidants Spell Eye Trouble
Gene-Transfer Proves Safe for Vision Problem
FITNESS
Run for Your Life
Have Fun This Summer, But DO Be Careful
Simple Steps Get Walkers Moving
GASTROINTESTINAL PROBLEMS
Intestinal Bacteria Trigger Immune Response
HRT Use Raises Risk of Stomach Trouble
New Guidelines Issued for Management of IBS
GENERAL HEALTH
Autumn Chores Often Hazardous
'Soda Tax' Wins Health Experts' Support
Have a Goal in Life? You Might Live Longer
HEAD & NECK
Many Children Will Outgrow Headaches
Ski Helmets Encouraged for All
Zen May Thicken Brain, Thwart Pain
HEALTH & TECHNOLOGY
Magnet Therapy May Ease Hard-to-Treat Depression
Subway Defibrillators Save Lives
The Internet Is Becoming One-Stop Shopping for Health Help
HEARING
Noise Hurts Men's Hearing More, Study Shows
Summer Sounds Can Lead to Hearing Loss
HEART & CARDIOVASCULAR
Irregular Heartbeat Tied to Alzheimer's Disease
Review Confirms Links Between Diet, Heart Health
How Weight Loss Can Help the Heart
INFECTIOUS DISEASE
Dry Weather Boosts Odds of Flu Outbreaks
Swine Flu Loves a Crowd
Grapefruit Compound Inhibits Hepatitis C Virus
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Help Your Kids Stay Active
Green Tea May Help Brain Cope With Sleep Disorders
Music of Mozart Soothes the Preemie Baby
MEN'S HEALTH
Whole Grains, Bran May Fight Hypertension in Men
Exercise May Prevent Prostate Cancer: Study Shows
Strenuous Daily Workout May Keep Cancer at Bay
MENTAL HEALTH
Memory Loss Help from Brain Supplement Prevagen
Green Spaces Boost the Body and the Mind
The Unmedicated Mind
PAIN
Acupuncture, Real or Fake, Eases Back Pain
Are We Exercising Pain Away? Not So Much.
Alleviating Rheumatoid Arthritis
PHYSICAL THERAPY
PREGNANCY
Exercise Boosts Bone Density in Breast-Feeding Moms
Expectant Mom's Exercise Keeps Newborn's Birth Weight Down
Acupuncture May Ease Depression During Pregnancy
SENIORS
Common Antioxidant Might Slow Parkinson's
Vitamin D May Help Keep Aging at Bay
Friends, Not Grandkids, Key to Happy Retirement
SEXUAL HEALTH
SLEEP DISORDERS
Pay Attention to Signs That Say You're Too Fatigued to Drive
6 to 8 Hours of Shut-Eye Is Optimal for Health
Exercising Throat Muscles May Relieve Sleep Apnea
WOMEN'S HEALTH
Natural Relief for Painful Menstrual Cramps
Smoking Ups Risk of Second Breast Cancer
Natural Childbirth Moms More Attuned to Babies' Cry
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Air Pollution Slows Women's Marathon Times

Running a marathon is challenging enough, but now new research shows that the performance of female marathoners can be hindered by a certain type of air pollution.

Researchers analyzed marathon race results, weather data and air pollution concentrations in seven major U.S. marathons over a period of eight to 28 years. They found that higher levels of air pollution particles were associated with slower finish times for women. Air pollution levels didn't appear to have a significant impact on men, the study authors noted.

"Although pollution levels in these marathons rarely exceeded national standards for air quality, performance was still affected," study author Linsey Marr said in a news release from the American College of Sports Medicine.

That's because of marathoners' breathing patterns, Marr explained.

"Previous research has shown that during a race, marathon runners inhale and exhale about the same volume of air as a sedentary person would over the course of two full days. Therefore, runners are exposed to much greater amounts of pollutants than under typical breathing conditions," Marr said.

The researchers looked at a number of other air pollution components -- such as carbon monoxide, ozone, nitrogen dioxide and sulfur dioxide -- but found that only particulate matter affected the performance of female marathoners.

The study findings are published in the March issue of the journal Medicine & Science in Sports & Exercise.