ALLERGY, RESPIRATORY
Childhood Food Allergies on the Rise
New Spray Could Benefit Cystic Fibrosis Patients
Keep Asthma, Allergies at Bay for the Holidays
ALTERNATIVE MEDICINE
Fish Oil's Benefits Remain Elusive
Awareness of Alternative Therapies May Be Lacking
Insight on Herbals Eludes Doctors, Patients Alike
ANIMAL CARE
Separation Anxiety, Canine-Style
'Comfort Dogs' Come to Emotional Rescue
Rest Easy. When It Comes to Swine Flu, Your Pet Is Safe
BONES & JOINTS
High Birth Weight Doubles Risk of Rheumatoid Arthritis
Too Few Screened for Abdominal Aneurysm, Study Says
Low Vitamin D Raises Women's Hip Fracture Risk
CANCER
Vitamin D May Lower Colon Cancer Risk
Bitter Melon Extract May Slow, Stop Breast Cancer
Study Cites Gains in Gall Bladder Cancer Treatment
CAREGIVING
Obese Children More Likely to Suffer Lower Body Injuries
Many Alzheimer's Caregivers Admit to Abusive Behavior
Tiniest Babies Carry Biggest Costs
CIRCULATORY SYSTEM
Obesity Linked to Heart Failure Risk
Grapefruit-Heavy Diet Helped Spur Dangerous Clot
Tai Chi and Qigong Offer Many Health Benefits: Review
COSMETIC
Science May Banish Bad Hair Days
What to Do If You Have Unsightly Veins
Get Sugared!.... Its a sweet choice for hair removal
DENTAL, ORAL
Laser Technology Spots Cavities Before They Start
Gum Care Helps Control Type 2 Diabetes and Its Complications
Most Insured Adults Worry About Health Care Costs: Poll
DIABETES
Coffee, Tea Might Stave Off Diabetes
Saliva Test Could Monitor Type 2 Diabetes
Whole Grains Take a Bite Out of Type 2 Diabetes Risk
DIET, NUTRITION
Purple Tomato Extended Lives of Cancer-Prone Mice
Proven Strategies for Avoiding Colds and the Flu
Antioxidants Abound in Cereals, Popcorn, Whole-Grain Snacks
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
Smog Tougher on the Obese
Freckles, Moles May Indicate Risk for Eye Cancer
Sunken, Unexploded Bombs Pose Cancer Risk
EYE CARE, VISION
Kids' Eye Injuries From Golf Clubs Rare But Severe
Don't Lose Sight of Halloween Safety
Florida Vision Test Law: Fewer Traffic Deaths Among Elderly
FITNESS
Go To Work But Skip The Car
Higher Fitness Levels Tied to Lower Heart, Death Risks
Super Bowl Loss Can 'Kill' Some Fans
GASTROINTESTINAL PROBLEMS
Traditional Nonsurgical GERD Treatments Not Impressive
Japanese Herbals May Ease Gastro Woes
Soothing Imagery May Help Rid Some Kids of Stomach Pain
GENERAL HEALTH
Stressed and Exhausted: An Introduction to Adrenal Fatigue
Eat Light - Live Longer
Swine Flu Loves a Crowd
HEAD & NECK
Zen May Thicken Brain, Thwart Pain
Many Children Will Outgrow Headaches
Ski Helmets Encouraged for All
HEALTH & TECHNOLOGY
Save Your Aging Brain, Try Surfing The Web
E-Mailing Your Way to Healthier Habits
'Cell Phone Elbow' -- A New Ill for the Wired Age
HEARING
Summer Sounds Can Lead to Hearing Loss
Noise Hurts Men's Hearing More, Study Shows
HEART & CARDIOVASCULAR
Low Vitamin D Levels Linked to Heart Disease
After a Stroke, Light Exercise Gets Hands, Arms Working Again
Laughter Can Boost Heart Health
INFECTIOUS DISEASE
Bacterial Infections May Succumb to Honey
Dry Weather Boosts Odds of Flu Outbreaks
Chinese 'Devil Dung' Plant Could Be a Swine Flu Fighter
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
School Meals Need to Get Healthier
Health Tip: Back Pain in Children
More Calcium And Dairy Products in Childhood Could Mean Longer Life
MEN'S HEALTH
Lots of Sex May Prevent Erectile Dysfunction
Sunlight May Help Protect Men From Kidney Cancer
The Dark Side of Vegetarianism
MENTAL HEALTH
Common Social Groups and Race, Seem to Help People Relate
Consciousness Helps the Mind and Body Work Together
Breast-Fed Baby May Mean Better Behaved Child
PAIN
Are We Exercising Pain Away? Not So Much.
'Cell Phone Elbow' -- A New Ill for the Wired Age
Tai Chi May Help Ease Fibromyalgia
PHYSICAL THERAPY
PREGNANCY
Prenatal Stress May Boost Baby's Asthma Risk
Pregnant Women Exposed To Certain Pollutants Could Lower Childs IQ
Heart Defects in Newborns Linked to Antidepressants
SENIORS
Nighttime Urination Linked to Higher Death Rate Among Elderly
Seniors Cope With Sleep Loss Better Than Young Adults
Want Better Health in the New Year, Add Exercise to Your Day
SEXUAL HEALTH
SLEEP DISORDERS
Lose Weight, Sleep Apnea May Improve
Sleeping Could Help Women Lose The Baby Fat
Daylight Savings: Not a Bright Time for All
WOMEN'S HEALTH
Prenatal Stress May Boost Baby's Asthma Risk
Sleeping Could Help Women Lose The Baby Fat
Natural Oils Help Lower Body Fat For Some
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Air Pollution May Raise Blood Pressure

(HealthDay News) -- Breathing polluted air for even two hours can boost blood pressure, potentially raising the risk of cardiovascular disease in those exposed to smog, a new study suggests.

Although the increase may not mean much for healthy people, "this small increase may actually be able to a trigger a heart attack or stroke," study author Dr. Robert D. Brook, an assistant professor of medicine at the University of Michigan, said in a university news release.

An estimated nearly one in three Americans suffer from high blood pressure, meaning the heart is straining to push blood through the circulatory system.

In the study, which appears in a recent issue of Hypertension, researchers tested 83 people as they breathed levels of air pollution similar to those in an urban city near a roadway.

"We looked at their blood vessels and then their responses before and after breathing high levels of air pollution," study co-author Robert Bard, a University of Michigan clinic research coordinator, said in a news release.

The air pollution caused diastolic pressure -- the lower number in a blood pressure reading -- to rise within two hours. Blood vessels were impaired for as long as 24 hours.

Tests showed that microscopic particles in the air, rather than ozone gases, caused the rise in blood pressure and impaired blood vessel function.

"If air pollution levels are forecasted to be high, those with heart disease, diabetes or lung disease should avoid unnecessary outdoor activity," Brook said.

SOURCES: University of Michigan, news release, September 2009 Published on: September 14, 2009