ALLERGY, RESPIRATORY
Keep Asthma, Allergies at Bay for the Holidays
Air Pollution May Raise Blood Pressure
Molecule in Skin May Link Eczema and Asthma
ALTERNATIVE MEDICINE
The Zen Way to Pain Relief
Acupuncture Cuts Dry Mouth in Cancer Patients
Should Your Child Be Seeing a Chiropractor?
ANIMAL CARE
Separation Anxiety, Canine-Style
Beware of Dog Bites
Animals Respond to Acupuncture's Healing Touch
BONES & JOINTS
Human Ancestors Put Best Foot Forward 1.5M Years Ago
Yoga Can Ease Lower Back Pain
Hip Replacement Boosts Mobility at Any Age
CANCER
Vitamin D May Lower Colon Cancer Risk
Study Suggests Link Between Cell Phones and Brain Tumors
Massage Therapy Helps Those With Advanced Cancer
CAREGIVING
Medication Errors Could Be Cut: Experts
Early Exercise Boosts Outcomes for ICU Patients
Exercise During Pregnancy May Help Baby
CIRCULATORY SYSTEM
Drink a Little Wine, Live a Little Longer
Obesity Linked to Heart Failure Risk
Firefighters Have Narrower-Than-Normal Arteries, Study Finds
COSMETIC
Wrinkle Fillers Need Better Label Warnings: FDA Panel
Mouse Study Finds Molecule That Tells Hair to Grow
New Genetic Links to Baldness Discovered
DENTAL, ORAL
Study Links Osteoporosis Drugs to Jaw Trouble
Gum Disease May Reactivate AIDS Virus
Toothbrushing May Stave Off Heart Woes
DIABETES
Formula Puts Doctor, Patient Glucose Readings on Same Page
Diabetes Linked to Cognitive Problems
Brown Rice Bests White for Diabetes Prevention
DIET, NUTRITION
More Calcium And Dairy Products in Childhood Could Mean Longer Life
Natural Oils Help Lower Body Fat For Some
Potassium-Rich Foods May Cut Stroke, Heart Disease Risk
DISABILITIES
Review Finds Marijuana May Help MS Patients
Could Your Cell Phone Help Shield You From Alzheimer's?
ENVIRONMENTAL HEALTH
Lead Exposure in Childhood Linked to Criminal Behavior Later
Clear Skies Have Become Less So Over Time, Data Show
Global Warming Linked to Heightened Kidney Stone Risk
EYE CARE, VISION
Blood Sugar Control Helps Diabetics Preserve Sight
Protein Might One Day Prevent Blindness
It's a Whole New Outlook for Cataract Patients
FITNESS
Basketball Star Details His Struggle With Gout
Moderate Aerobic Exercise Lowers Diabetics' Liver Fat
Exercise May Prevent Prostate Cancer: Study Shows
GASTROINTESTINAL PROBLEMS
Soothing Imagery May Help Rid Some Kids of Stomach Pain
Olive Oil May Protect Against Bowel Disease
Gum Chewing May Speed Colon Surgery Recovery
GENERAL HEALTH
Vitamin D Best Taken With Largest Meal of Day, Study Finds
Deployment Takes Toll on Army Wives
Vitamin E Helps Treat Common Liver Disease
HEAD & NECK
Ski Helmets Encouraged for All
Many Children Will Outgrow Headaches
Zen May Thicken Brain, Thwart Pain
HEALTH & TECHNOLOGY
'Comfort Dogs' Come to Emotional Rescue
Save Your Aging Brain, Try Surfing The Web
E-Mailing Your Way to Healthier Habits
HEARING
Noise Hurts Men's Hearing More, Study Shows
Summer Sounds Can Lead to Hearing Loss
HEART & CARDIOVASCULAR
Fructose Boosts Blood Pressure, Studies Find
Omega-6 Fatty Acids Can Be Good for You
Obese People Seem to Do Better With Heart Disease
INFECTIOUS DISEASE
Poor Restroom Cleaning Causes Cruise-Ship Sickness
Swine Flu Loves a Crowd
The HPV Vaccine: Preventative Medicine or Human Sacrifice?
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Boosting Kids' Stroke IQ May Save Lives
Combo Treatment Eases Wheezing in Babies
St. John's Wort Doesn't Work for ADHD
MEN'S HEALTH
Noise Hurts Men's Hearing More, Study Shows
Could Chinese Herb Be a Natural Viagra?
The Dark Side of Vegetarianism
MENTAL HEALTH
Green Spaces Boost the Body and the Mind
Memory Loss Help from Brain Supplement Prevagen
Mind Exercise Might Help Stroke Patients
PAIN
Acupuncture, Real or Fake, Eases Back Pain
Are We Exercising Pain Away? Not So Much.
Tai Chi May Help Ease Fibromyalgia
PHYSICAL THERAPY
PREGNANCY
Sugary Colas Tied to Gestational Diabetes
Alternative Treatments May Boost IVF Success
Acupuncture May Relieve Acid Indigestation In Pregnancy
SENIORS
Vitamin D May Help Keep Aging at Bay
Older Adults May Have Some Immunity to Swine Flu
Keeping Mentally Active Seems To Keep The Brain Active
SEXUAL HEALTH
SLEEP DISORDERS
Sleeping Could Help Women Lose The Baby Fat
Meditation May Help Put Primary Insomnia to Bed
Lose Weight, Sleep Apnea May Improve
WOMEN'S HEALTH
Frankincense Provides Relief for Osteoarthritis
Exercise, Weight Control May Keep Fibromyalgia at Bay
Supportive Weigh-In Program Keeps Pounds Off
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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