ALLERGY, RESPIRATORY
New Spray Could Benefit Cystic Fibrosis Patients
Air Pollution May Raise Blood Pressure
Herbal Remedy Could Halt Peanut Allergy
ALTERNATIVE MEDICINE
Memory Loss Help from Brain Supplement Prevagen
Eight Spiritual Universal Principles in the Art of Practice
Tai Chi: An Ideal Exercise for Many People with Diabetes
ANIMAL CARE
Safe Toys for Dogs
'Comfort Dogs' Come to Emotional Rescue
Beware of Dog Bites
BONES & JOINTS
Chronic Low Back Pain Is on the Rise
Barefoot Lifestyle Has Its Dangers
Studies Struggle to Gauge Glucosamine's Worth
CANCER
U.S. Reported 25,000 Cases of HPV-Related Cancers Annually
Omega-3 May Safely Treat Precancerous Bowel Polyps
Method for Treating Cervical Lesions May Pose Pregnancy Risks
CAREGIVING
For Dialysis Patients, More Pills = Lower Quality of Life
Hispanic Children More Likely to Have Hearing Loss
More Than 60,000 Patients Risked Hepatitis Infections
CIRCULATORY SYSTEM
A Brisk Pace May Keep Stroke at Bay
Firefighters Have Narrower-Than-Normal Arteries, Study Finds
Salt Boosts Blood Pressure in High-Risk Patients
COSMETIC
Wrinkle Fillers Need Better Label Warnings: FDA Panel
Science May Banish Bad Hair Days
Study Evaluates Laser Therapies for Hair Removal
DENTAL, ORAL
Scientists Find Gene for Tooth Enamel
Amino Acid May Be Key to Strong Teeth
Health Tip: At Risk for Gingivitis
DIABETES
Drug May Not Help Diabetes-Related Eye Damage
Insulin Resistance Tied to Peripheral Artery Disease
Study Shows Turmeric May Prevent Type 2 Diabetes
DIET, NUTRITION
Meat Additives May Be Dangerous for Kidney Patients
To Feel Better, Low-Fat Diet May Be Best
More Calcium And Dairy Products in Childhood Could Mean Longer Life
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
Stomach Germ May Protect Against Asthma
Heavy Traffic Can Be Heartbreaking
City Kids Find the Breathin' Is Easier Elsewhere
EYE CARE, VISION
Eye Care Checkups Tied to Insurance Status
Brain Pressure More Likely to Cause Vision Loss in Men
Poor Night Vision May Predict Age-Related Eye Disease
FITNESS
Mom and Baby Alike May Benefit From Exercise
The Juice From Beetroots May Boost Stamina
Fitness Fades Fast After 45
GASTROINTESTINAL PROBLEMS
Traditional Nonsurgical GERD Treatments Not Impressive
Intestinal Bacteria Trigger Immune Response
Bowel Prep Harder on Women Than Men
GENERAL HEALTH
Can You Talk Your Way to Happy?
Swine Flu Is Now a Pandemic Says W.H.O.
Want Better Health in the New Year, Add Exercise to Your Day
HEAD & NECK
Many Children Will Outgrow Headaches
Zen May Thicken Brain, Thwart Pain
Ski Helmets Encouraged for All
HEALTH & TECHNOLOGY
'Comfort Dogs' Come to Emotional Rescue
Subway Defibrillators Save Lives
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
Man's Best Friend Helps Mend Broken Hearts
Obese People Seem to Do Better With Heart Disease
Using Light Therapy to Silence Harmful Brain Activity
INFECTIOUS DISEASE
The HPV Vaccine: Preventative Medicine or Human Sacrifice?
Poor Restroom Cleaning Causes Cruise-Ship Sickness
Surgical Masks Could Prevent Flu, Maybe
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
More Calcium And Dairy Products in Childhood Could Mean Longer Life
Bullying Seems to Affect Kids Years Later
Time to Remind Teens About Sun Protection
MEN'S HEALTH
Low Iron Levels Cut Cancer Risk in Men With PAD
Countdown to Hair Loss
Soy Linked to Low Sperm Count
MENTAL HEALTH
Eight Spiritual Universal Principles in the Art of Practice
Drink Away Dementia?
A Simple 'Thank You' Brings Rewards to All
PAIN
'Cell Phone Elbow' -- A New Ill for the Wired Age
Alleviating Rheumatoid Arthritis
Acupuncture, Real or Fake, Eases Back Pain
PHYSICAL THERAPY
PREGNANCY
Breast-Feeding May Protect a Woman's Heart
Exercise As Well As Acupuncture, May Ease Polycystic Ovarian Syndrome
Yoga's Benefits Outweigh Risks for Pregnant Women
SENIORS
Mediterranean Diet Plus Exercise Lowers Alzheimer's Risk
For a Healthier Retirement, Work a Little
The Healthy Habits of Centenarians
SEXUAL HEALTH
SLEEP DISORDERS
Exercising Throat Muscles May Relieve Sleep Apnea
Meditation May Help Put Primary Insomnia to Bed
Lose Weight, Sleep Apnea May Improve
WOMEN'S HEALTH
Natural Relief for Painful Menstrual Cramps
Soy May Not Lead to Denser Breasts
Omega-3 May Reduce Endometriosis Risk
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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