ALLERGY, RESPIRATORY
Keep Asthma, Allergies at Bay for the Holidays
Air Pollution May Raise Blood Pressure
Asthmatics Who Quit Smoking May Reverse Lung Damage
ALTERNATIVE MEDICINE
Pain-Relieving Powers of Acupuncture Unclear
Taking the Mystery Out of Hypnotherapy
Should Your Child Be Seeing a Chiropractor?
ANIMAL CARE
'Comfort Dogs' Come to Emotional Rescue
Separation Anxiety, Canine-Style
Safe Toys for Dogs
BONES & JOINTS
Autumn Sees More Women With Bunion Problems
Brazilian Mint Tea Naturally Good for Pain Relief
Most Women With Osteoporosis Unaware of Raised Fracture Risk
CANCER
Family History Key Player in Brain Cancer Risk
Spice Compounds May Stem Tumor Growth
Papaya Could Be a Cancer Fighter
CAREGIVING
Medication Errors Could Be Cut: Experts
Obese Children More Likely to Suffer Lower Body Injuries
Stressed Health Care Workers Battle 'Compassion Fatigue'
CIRCULATORY SYSTEM
An Apple a Day May Help Keep Heart Disease Away
Vitamins Do Older Women Little Good
Migraines in Pregnancy Boost Vascular Risks
COSMETIC
Mouse Study Finds Molecule That Tells Hair to Grow
The Acne Drug Accutane More Than Doubles Depression Risk
Contact Lenses Boost Kids' Self-Image
DENTAL, ORAL
Scientists Find Gene for Tooth Enamel
Amino Acid May Be Key to Strong Teeth
Gum Disease May Reactivate AIDS Virus
DIABETES
Doctors Urged to Screen Diabetics for Sleep Apnea
Whole Grains Take a Bite Out of Type 2 Diabetes Risk
'Standard' Glucose Test May Be Wrong One for Obese Children
DIET, NUTRITION
The 3LS Wellness Program for Reversing Chronic Symptoms and Creating Lasting Health
Uncover Why Turmeric Helps You Heal
Leafy Greens Top Risky Food List
DISABILITIES
Review Finds Marijuana May Help MS Patients
Could Your Cell Phone Help Shield You From Alzheimer's?
ENVIRONMENTAL HEALTH
Pesticides Linked to Parkinson's
Improved Fungicides May Be Easier on Environment
Main Ingredients in Household Dust Come From Outdoors
EYE CARE, VISION
Eye Disease, Cognitive Decline Linked in Study
Protein Might One Day Prevent Blindness
Eye Problems, Hearing Loss May Be Linked
FITNESS
Exercise 30 Minutes a Day? Who Knew!
Good Warm-Ups Could Halve Sports Injuries
Seniors Who Exercise Help Their Health
GASTROINTESTINAL PROBLEMS
Gum Chewing May Speed Colon Surgery Recovery
Olive Oil May Protect Against Bowel Disease
Soothing Imagery May Help Rid Some Kids of Stomach Pain
GENERAL HEALTH
A Little Alcohol May Stave Off Alzheimer's
Hand-Washing Habits Still Need Improvement: Survey Says
Common Social Groups and Race, Seem to Help People Relate
HEAD & NECK
Many Children Will Outgrow Headaches
Zen May Thicken Brain, Thwart Pain
Ski Helmets Encouraged for All
HEALTH & TECHNOLOGY
'Cell Phone Elbow' -- A New Ill for the Wired Age
Using Light Therapy to Silence Harmful Brain Activity
Magnet Therapy May Ease Hard-to-Treat Depression
HEARING
Summer Sounds Can Lead to Hearing Loss
Noise Hurts Men's Hearing More, Study Shows
HEART & CARDIOVASCULAR
Fructose Boosts Blood Pressure, Studies Find
Research Shows Genetic Activity of Antioxidants
Vitamin B3 May Help Repair Brain After a Stroke
INFECTIOUS DISEASE
The HPV Vaccine: Preventative Medicine or Human Sacrifice?
Chinese 'Devil Dung' Plant Could Be a Swine Flu Fighter
Dry Weather Boosts Odds of Flu Outbreaks
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Better Sleep, Grades Seem to Go Up
Daily Exercise at School Yields Rewards
When It Comes to Toys, Shop Smart, Shop Safe
MEN'S HEALTH
Physical Activity May Prolong Survival After Colon Cancer
Sunlight May Help Protect Men From Kidney Cancer
Vigorous Exercise Cuts Stroke Risk for Men, Not Women
MENTAL HEALTH
Consciousness Helps the Mind and Body Work Together
17 Ways to Create the Perfect Workday
Fear Response May Stem From Protein in Brain
PAIN
'Cell Phone Elbow' -- A New Ill for the Wired Age
Alleviating Rheumatoid Arthritis
Are We Exercising Pain Away? Not So Much.
PHYSICAL THERAPY
PREGNANCY
Calcium Supplements Cut Blood Lead Levels During Pregnancy
Expectant Mom's Exercise Keeps Newborn's Birth Weight Down
Placebo Acupuncture Tied to Higher IVF Pregnancies
SENIORS
High-Impact Activity May Be Good for Old Bones
Daily dose of beet juice promotes brain health in older adults
Exercise Benefits Even the Oldest Old
SEXUAL HEALTH
SLEEP DISORDERS
Meditation May Help Put Primary Insomnia to Bed
Better Sleep, Grades Seem to Go Up
6 to 8 Hours of Shut-Eye Is Optimal for Health
WOMEN'S HEALTH
Active Young Women Need Calcium, Vitamin D
Frankincense Provides Relief for Osteoarthritis
Flame-Retardant Chemical Linked to Conception Problems
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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