ALLERGY, RESPIRATORY
Using Music and Sports to Improve Kids' Asthma
Traffic, Dust Linked to Asthma in Kids
Climate Change Could Sting Allergy, Asthma Sufferers
ALTERNATIVE MEDICINE
New Insights Show Ginseng Fights Inflammation
No Verdict Yet on Grape Seed Extract vs. Breast Cancer
Animals Respond to Acupuncture's Healing Touch
ANIMAL CARE
Safe Toys for Dogs
'Comfort Dogs' Come to Emotional Rescue
Beware of Dog Bites
BONES & JOINTS
Gene Plays Key Role in Clubfoot
Gene Therapy May Ease Rheumatoid Arthritis
Backpack Safety Should Be on Back-to-School Lists
CANCER
Supplement Hampers Thyroid Cancer Treatment
Women Smokers Lose 14.5 Years Off Life Span
Get to Know the Pap Test
CAREGIVING
For Dialysis Patients, More Pills = Lower Quality of Life
Undoing the 'Big Baby' Trend
Birthmark or Blood Vessel Problem?
CIRCULATORY SYSTEM
High Blood Fat Levels Common in Americans
Common Antioxidant Might Slow Parkinson's
Drink a Little Wine, Live a Little Longer
COSMETIC
Gum Chewing May Cut Craving for Snacks
Contact Lenses Boost Kids' Self-Image
Study Evaluates Laser Therapies for Hair Removal
DENTAL, ORAL
Gum Disease Treatment Doesn't Cut Preterm Birth Risk
Health Tip: At Risk for Gingivitis
Rheumatoid Arthritis May Harm Gums
DIABETES
Vitamin K Slows Insulin Resistance in Older Men
Fish Twice a Week Cuts Diabetics' Kidney Risks
Treatment for Type 2 Diabetes Updated
DIET, NUTRITION
Fruits, Vegetables, Teas May Cut Smokers' Cancer Risk
To Feel Better, Low-Fat Diet May Be Best
Eating Lots Of Vegetables, Olive Oil May Extend Life
DISABILITIES
Review Finds Marijuana May Help MS Patients
Could Your Cell Phone Help Shield You From Alzheimer's?
ENVIRONMENTAL HEALTH
Rainy Areas in U.S. Show Higher Autism Rates
Ozone-Depleting Inhalers Being Phased Out
'Safe' Ozone Levels May Not Be for Some
EYE CARE, VISION
Too Much Sun, Too Few Antioxidants Spell Eye Trouble
Impotence Drugs Don't Harm Vision: Study
Stem Cells Repair Damaged Corneas in Mice
FITNESS
Will the Wii Keep You Fit?
The Juice From Beetroots May Boost Stamina
Any Exercise Good After a Heart Attack
GASTROINTESTINAL PROBLEMS
HRT Use Raises Risk of Stomach Trouble
New Yogurt May Ease Stomach Ulcers
Peppermint Oil, Fiber Can Fight Irritable Bowel
GENERAL HEALTH
Coffee Cuts Liver Scarring in Hepatitis C
Reminiscing Helps Build Emotional Strength
Eating Healthy : You Can Live Longer
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
Subway Defibrillators Save Lives
Study Suggests Link Between Cell Phones and Brain Tumors
HEARING
Noise Hurts Men's Hearing More, Study Shows
Summer Sounds Can Lead to Hearing Loss
HEART & CARDIOVASCULAR
A Little Chocolate May Do the Heart Good
Coffee Is Generally Heart-Friendly
Low Vitamin D Levels Linked to Heart Disease
INFECTIOUS DISEASE
Viral Infection Might Trigger High Blood Pressure
Older Adults May Have Some Immunity to Swine Flu
Surgical Masks Could Prevent Flu, Maybe
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Green Tea May Help Brain Cope With Sleep Disorders
Meaningful Conversations Boost Kids' Language Skills
Childhood Dairy Intake Boosts Bone Health Later On
MEN'S HEALTH
Low Vitamin D Levels May Boost Men's Heart Attack Risk
Sunlight May Help Protect Men From Kidney Cancer
Soy Linked to Low Sperm Count
MENTAL HEALTH
The Unmedicated Mind
Common Social Groups and Race, Seem to Help People Relate
Massage Fosters Healing in Bereaved Relatives
PAIN
Acupuncture, Real or Fake, Eases Back Pain
Alleviating Rheumatoid Arthritis
Are We Exercising Pain Away? Not So Much.
PHYSICAL THERAPY
PREGNANCY
Sleeping Could Help Women Lose The Baby Fat
Obesity May Affect Fertility in Young Womene
Acupuncture May Relieve Acid Indigestation In Pregnancy
SENIORS
Mediterranean Diet Plus Exercise Lowers Alzheimer's Risk
Boost In Elderly Population Will Be Felt Worldwide
Tai Chi and Qigong Offer Many Health Benefits: Review
SEXUAL HEALTH
SLEEP DISORDERS
Better Sleep, Grades Seem to Go Up
Lose Weight, Sleep Apnea May Improve
Daylight Savings: Not a Bright Time for All
WOMEN'S HEALTH
Omega-3 May Reduce Endometriosis Risk
Being Active an Hour a Day Puts Brakes on Weight Gain
Steady Weight Gain Boosts Late-Life Breast Cancer Risk
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New Clues to How Fish Oils Help Arthritis Patients

(HealthDay News) -- Researchers think they now understand the way that fish oils benefit people with rheumatoid arthritis and other conditions linked to inflammation.

The body converts an ingredient in fish oils called DHA into a chemical called Resolvin D2, which reduces the inflammation that can lead to various diseases, the scientists from Queen Mary, University of London and Harvard Medical School explained in their study published in the Oct. 28 issue of the journal Nature.

"We have known for some time that fish oils can help with conditions like arthritis, which are linked to inflammation. What we've shown here is how the body processes a particular ingredient of fish oils into Resolvin D2. We've also looked in detail at this chemical, determining at least some of the ways it relieves inflammation. It seems to be a very powerful chemical and a small amount can have a large effect," Mauro Perretti, a professor of immunopharmacology at Queen Mary, University of London, said in a university news release.

"This research is important because it explains at least one way in which fish oils can help in different types of arthritis. We can also work on this chemical and see if it can be used not only to treat or even prevent arthritis, but also as a possible treatment for a variety of other diseases associated with inflammation," said Perretti, who led the U.K. research team.

Unlike current anti-inflammatory drugs, Resolvin D2 doesn't appear to suppress the immune system, the researchers noted.

In arthritis, the body's immune system attacks healthy tissue. An important part of this process occurs when white blood cells (leukocytes) stick to the inner lining (endothelium) of blood vessels. In lab tests, Perretti and colleagues found that Resolvin D2 prompted endothelial cells to produce small amounts of nitric oxide, which acts as chemical signal that discourages white blood cells from sticking to the endothelium, thus preventing inflammation.

SOURCES: Queen Mary, University of London, news release, Oct. 28, 2009 Published on: October 28, 2009