ALLERGY, RESPIRATORY
Traffic, Dust Linked to Asthma in Kids
Childhood Food Allergies on the Rise
Folic Acid Might Offer Allergy Relief
ALTERNATIVE MEDICINE
Acupuncture Eases Breast Cancer Treatment Side Effects
Taking the Mystery Out of Hypnotherapy
Acupuncture Eases Side Effects of Head, Neck Cancer Treatments
ANIMAL CARE
'Comfort Dogs' Come to Emotional Rescue
Rest Easy. When It Comes to Swine Flu, Your Pet Is Safe
Beware of Dog Bites
BONES & JOINTS
Backpack Safety Should Be on Back-to-School Lists
Fruits and Veggies May Strengthen Bones
Improved Hip Implants Can Last 20 Years
CANCER
Get to Know the Pap Test
Spice Compounds May Stem Tumor Growth
Tanning Beds Shown To Raise Cancer Risk, Study Says
CAREGIVING
Many Hospital Patients Can't ID Their Doctors
Study Links Pesticides to Birth Defects
Rapid Infant Weight Gain Linked to Childhood Obesity
CIRCULATORY SYSTEM
Bad Marriages Harder on Women's Health
Grapefruit-Heavy Diet Helped Spur Dangerous Clot
Obesity Linked to Heart Failure Risk
COSMETIC
The Acne Drug Accutane More Than Doubles Depression Risk
Science May Banish Bad Hair Days
Wrinkle Fillers Need Better Label Warnings: FDA Panel
DENTAL, ORAL
Obesity Boosts Gum Disease Risk
Biological Product Shows Promise Against Gum Disease
Acupuncture May Ease Anxiety Over Dental Work
DIABETES
Whole Grains Take a Bite Out of Type 2 Diabetes Risk
Drug May Not Help Diabetes-Related Eye Damage
24 Million Americans Had Diabetes in 2007
DIET, NUTRITION
Low Vitamin D Levels May Initiate Cancer Development
Proven Strategies for Avoiding Colds and the Flu
Indian Spice May Thwart Liver Damage
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
Smog Standards Need Tightening, Activists Say
Database Helps Assess Your Breast Cancer Risk
Old-Growth Forests Dying Off in U.S. West
EYE CARE, VISION
Music Can Help Restore Stroke Patients' Sight
Half of U.S. Adults Lack 20/20 Vision
Eye Disease, Cognitive Decline Linked in Study
FITNESS
Run for Your Life
Exercise Extends Life of Kidney Patients
Barefoot Best for Running?
GASTROINTESTINAL PROBLEMS
Intestinal Bacteria Trigger Immune Response
New Guidelines Issued for Management of IBS
Gum Chewing May Speed Colon Surgery Recovery
GENERAL HEALTH
Any Old Cane Won't Do
Hoping for a Happy Family Holiday? Here's How
Should the FDA Regulate Tobacco?
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
Magnet Therapy May Ease Hard-to-Treat Depression
Subway Defibrillators Save Lives
HEARING
Noise Hurts Men's Hearing More, Study Shows
Summer Sounds Can Lead to Hearing Loss
HEART & CARDIOVASCULAR
Potassium-Rich Foods May Cut Stroke, Heart Disease Risk
Vitamin B3 May Help Repair Brain After a Stroke
Small Cuts in Salt Intake Spur Big Drops in Heart Trouble
INFECTIOUS DISEASE
Bacterial Infections May Succumb to Honey
Swine Flu Now Reported in All 50 States
Viral Infection Might Trigger High Blood Pressure
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Scary Toxins Make Halloween Face Paints Questionable
Eating Fish, Breast-Feeding Boost Infant Development
Quick Orthopedic Repair Can Save Young Shoulders
MEN'S HEALTH
Low Iron Levels Cut Cancer Risk in Men With PAD
Soy Linked to Low Sperm Count
Strenuous Daily Workout May Keep Cancer at Bay
MENTAL HEALTH
How to Attack Holiday Stress Head-On
Massage Fosters Healing in Bereaved Relatives
Common Social Groups and Race, Seem to Help People Relate
PAIN
Alleviating Rheumatoid Arthritis
Tai Chi May Help Ease Fibromyalgia
Are We Exercising Pain Away? Not So Much.
PHYSICAL THERAPY
PREGNANCY
For Baby and Mom Alike, Breast-Feeding May Be Best
Expectant Mom's Exercise Keeps Newborn's Birth Weight Down
Acupuncture May Ease Depression During Pregnancy
SENIORS
Living Alone Increases Odds of Developing Dementia
Older Adults May Have Some Immunity to Swine Flu
Daily dose of beet juice promotes brain health in older adults
SEXUAL HEALTH
SLEEP DISORDERS
Meditation May Help Put Primary Insomnia to Bed
Daylight Savings: Not a Bright Time for All
Pay Attention to Signs That Say You're Too Fatigued to Drive
WOMEN'S HEALTH
Being Active an Hour a Day Puts Brakes on Weight Gain
Active Young Women Need Calcium, Vitamin D
Broccoli May Help Battle Breast Cancer
Add your Article

Vigorous Exercise Can Cut Breast Cancer Risk

FRIDAY, Oct. 31 (HealthDay News) -- Vigorous activity can reduce the risk of breast cancer by about 30 percent in normal-weight women, according to an 11-year U.S. study of 32,269 postmenopausal women.

For the study, vigorous activity was defined as heavy housework (scrubbing floors, washing windows, demanding yard work, digging, chopping wood) and strenuous sports or exercise, such as running, fast jogging, competitive tennis, aerobics, bicycling on hills, and fast dancing.

While vigorous activity reduced breast cancer risk in normal-weight women, it had no effect in women who were overweight or obese, according to study leader Michael F. Leitzmann and colleagues.

They also found that non-vigorous activity, such as light housework (vacuuming, doing laundry, painting, general gardening) and light sports or exercise (walking, hiking, light jogging, recreational tennis, bowling) offered no protection against breast cancer.

The findings were published in the journal Breast Cancer Research.

"Possible mechanisms through which physical activity may protect against breast cancer that are independent of body mass include reduced exposure to growth factors, enhanced immune function, and decreased chronic inflammation, variables that are related both to greater physical activity and to lower breast cancer risk," the study authors wrote.

"An alternative explanation for the stronger apparent effect of vigorous activity among lean over heavy women is that heavier women may misreport non-vigorous activities as vigorous activities," the researchers added.

More information

The U.S. National Cancer Institute has more about breast cancer risk.



-- Robert Preidt



SOURCE: BioMed Central, news release, Oct. 30, 2008

Last Updated: Oct. 31, 2008

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