ALLERGY, RESPIRATORY
New Spray Could Benefit Cystic Fibrosis Patients
Air Pollution May Raise Blood Pressure
Childhood Food Allergies on the Rise
ALTERNATIVE MEDICINE
Wristbands May Lessen Nausea After Radiation
The Zen Way to Pain Relief
No Verdict Yet on Grape Seed Extract vs. Breast Cancer
ANIMAL CARE
Animals Respond to Acupuncture's Healing Touch
Safe Toys for Dogs
'Comfort Dogs' Come to Emotional Rescue
BONES & JOINTS
Osteoporosis May Raise Risk for Vertigo
Alcohol Abuse Can Damage Bones
Health Tip: Back Pain in Children
CANCER
Adding Garlic Might Cut Cancer Risk
Lifting Weights Can Ease Arm Swelling in Breast Cancer Survivors
Many Cancer Survivors Don't Adopt Healthy Lifestyle
CAREGIVING
Timing May Matter in Organ Donation Decisions
Birthmark or Blood Vessel Problem?
Moms Who Breast-Feed Less Likely to Neglect Child
CIRCULATORY SYSTEM
Laughter Can Boost Heart Health
Night Shift Work Hard on the Heart
Bye, Bye Back Fat?
COSMETIC
What to Do If You Have Unsightly Veins
Mouse Study Finds Molecule That Tells Hair to Grow
Get Sugared!.... Its a sweet choice for hair removal
DENTAL, ORAL
Holistic Dentistry-My View
Scientists Find Gene for Tooth Enamel
Gum Disease Might Boost Cancer Risk
DIABETES
Findings Challenge Tight Glucose Control for Critically Ill Patients
Drug May Not Help Diabetes-Related Eye Damage
Formula Puts Doctor, Patient Glucose Readings on Same Page
DIET, NUTRITION
Indian Spice May Thwart Liver Damage
Holiday Eating Without the Guilt -- or the Pounds
Vitamin D May Help Keep Aging at Bay
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
Restaurant Sushi May Have More Mercury Than Store-Bought Fare
Pilots May Face Greater Cancer Risk
Climate Change Linked to Longer Pollen Seasons
EYE CARE, VISION
Blood Sugar Control Helps Diabetics Preserve Sight
Antioxidant-Rich Diet May Protect Against Eye Disease
Glaucoma Associated With Reading Impairments in Elderly
FITNESS
More Steps a Day Lead to Better Health
Brisk Walk Can Help Leave Common Cold Behind
Diet, Exercise May Slow Kidney Disease Progression
GASTROINTESTINAL PROBLEMS
Intestinal Bacteria Trigger Immune Response
New Guidelines Issued for Management of IBS
Soothing Imagery May Help Rid Some Kids of Stomach Pain
GENERAL HEALTH
Hoping for a Happy Family Holiday? Here's How
Treat symptoms (result of disease) or diagnose systems (cause of disease)?
Lower Vitamin D Levels in Blacks May Up Heart Risks
HEAD & NECK
Zen May Thicken Brain, Thwart Pain
Many Children Will Outgrow Headaches
Ski Helmets Encouraged for All
HEALTH & TECHNOLOGY
'Comfort Dogs' Come to Emotional Rescue
Airport Full Body Scanners Pose No Health Threat: Experts
The Internet Is Becoming One-Stop Shopping for Health Help
HEARING
Summer Sounds Can Lead to Hearing Loss
Noise Hurts Men's Hearing More, Study Shows
HEART & CARDIOVASCULAR
Fish Oil Supplements Help With Heart Failure
Fewer Heart Attacks After England Goes Smoke-Free
More Steps a Day Lead to Better Health
INFECTIOUS DISEASE
Hand Washing 10 Times a Day May Help Keep Flu Away
Viral Infection Might Trigger High Blood Pressure
Older Adults May Have Some Immunity to Swine Flu
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Help Your Kids Stay Active
Safety Should Be Priority for Those Involved in Kids' Sports
Play Creatively as a Kid, Be a Healthier Adult
MEN'S HEALTH
Physical Activity May Prolong Survival After Colon Cancer
Eating Fast Until Full Triples Overweight Risk
Soy Linked to Low Sperm Count
MENTAL HEALTH
A Little Alcohol May Stave Off Alzheimer's
Estrogen May Help Men's Hearts
Brain Scans Show How Humans 'Hear' Emotion
PAIN
'Cell Phone Elbow' -- A New Ill for the Wired Age
Acupuncture, Real or Fake, Eases Back Pain
Tai Chi May Help Ease Fibromyalgia
PHYSICAL THERAPY
PREGNANCY
Yoga's Benefits Outweigh Risks for Pregnant Women
Heart Defects in Newborns Linked to Antidepressants
Sleeping Could Help Women Lose The Baby Fat
SENIORS
Want Better Health in the New Year, Add Exercise to Your Day
15-Point Test Gauges Alzheimer's Risk
Daily dose of beet juice promotes brain health in older adults
SEXUAL HEALTH
SLEEP DISORDERS
Exercising Throat Muscles May Relieve Sleep Apnea
Moderate Aerobics May Ease Insomnia Symptoms
Daylight Savings: Not a Bright Time for All
WOMEN'S HEALTH
Calcium Helps Ward Off Colon Cancer
Exercise, Weight Control May Keep Fibromyalgia at Bay
Broccoli May Help Battle Breast Cancer
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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