ALLERGY, RESPIRATORY
Air Pollution May Raise Blood Pressure
Keep Asthma, Allergies at Bay for the Holidays
Obesity May Raise Kids' Allergy Risk
ALTERNATIVE MEDICINE
Acupuncture May Not Help Hot Flashes
Eight Spiritual Universal Principles in the Art of Practice
Spot light on Dani Antman New Lionheart teacher
ANIMAL CARE
Animals Respond to Acupuncture's Healing Touch
Separation Anxiety, Canine-Style
Beware of Dog Bites
BONES & JOINTS
B Cells Can Act Alone in Autoimmune Diseases
Using a Balloon to Repair a Broken Back
Get in Step With Summer Foot Care
CANCER
Well Water Might Raise Bladder Cancer Risk
More Americans Urged to Get Cancer Screenings
Acupuncture May Help Relieve Polycystic Ovary Syndrome
CAREGIVING
Organ Donation Policies Vary Among Children's Hospitals
Weekend Admission May Be Riskier for GI Bleeding
Coordination Has Led to Quicker Heart Treatment
CIRCULATORY SYSTEM
Tai Chi and Qigong Offer Many Health Benefits: Review
High Blood Fat Levels Common in Americans
Common Antioxidant Might Slow Parkinson's
COSMETIC
New Genetic Links to Baldness Discovered
The Acne Drug Accutane More Than Doubles Depression Risk
Wrinkle Fillers Need Better Label Warnings: FDA Panel
DENTAL, ORAL
Toothbrushing May Stave Off Heart Woes
Health Tip: At Risk for Gingivitis
An Oral Approach to Heart Disease
DIABETES
Abnormal Heart Rhythm Boosts Death Risk for Diabetics
Brown Rice Bests White for Diabetes Prevention
Findings Challenge Tight Glucose Control for Critically Ill Patients
DIET, NUTRITION
'Organic' May Not Mean Healthier
10 Beginner Tips for Fast Weight Loss, the Low-Carb Way!
Many Cancer Survivors Don't Adopt Healthy Lifestyle
DISABILITIES
Review Finds Marijuana May Help MS Patients
Could Your Cell Phone Help Shield You From Alzheimer's?
ENVIRONMENTAL HEALTH
Clear Skies Have Become Less So Over Time, Data Show
EPA Alerts Seniors to Carbon Monoxide Dangers
Golf Course Insecticides Pose Little Danger to Players
EYE CARE, VISION
Eye Disease, Cognitive Decline Linked in Study
Green Tea May Ward Off Eye Disease
Time Teaches Brain to Recognize Objects
FITNESS
Occupational Therapy Plus Exercise Benefits Osteoarthritis
Bursts of Vigorous Activity Appear to Be a 'Stress-Buffer'
FDA Mandates New Warnings for Botox
GASTROINTESTINAL PROBLEMS
Soothing Imagery May Help Rid Some Kids of Stomach Pain
HRT Use Raises Risk of Stomach Trouble
Traditional Nonsurgical GERD Treatments Not Impressive
GENERAL HEALTH
Vitamin D Best Taken With Largest Meal of Day, Study Finds
Dry Weather Boosts Odds of Flu Outbreaks
Week of Historic Senate Hearings on Integrative Medicine May Open New Doors
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
The Internet Is Becoming One-Stop Shopping for Health Help
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
More Steps a Day Lead to Better Health
Omega-3, Some Omega-6 Fatty Acids Boost Cardiovascular Health
Drinking Your Way to Health? Perhaps Not
INFECTIOUS DISEASE
The HPV Vaccine: Preventative Medicine or Human Sacrifice?
Grapefruit Compound Inhibits Hepatitis C Virus
Chinese 'Devil Dung' Plant Could Be a Swine Flu Fighter
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Traffic Seems to Make Kids' Asthma Worse
Guard Kids' Eyes Against Long-Term Sun Damage
Fussy Babys Could Be Out Of Your Control
MEN'S HEALTH
Low Vitamin D Levels May Boost Men's Heart Attack Risk
Whole Grains, Bran May Fight Hypertension in Men
Physical Activity May Prolong Survival After Colon Cancer
MENTAL HEALTH
Have a Goal in Life? You Might Live Longer
Positive Brain Changes Seen After Body-Mind Meditation
Common Social Groups and Race, Seem to Help People Relate
PAIN
Alleviating Rheumatoid Arthritis
Acupuncture, Real or Fake, Eases Back Pain
Tai Chi May Help Ease Fibromyalgia
PHYSICAL THERAPY
PREGNANCY
Expectant Mom's Exercise Keeps Newborn's Birth Weight Down
Yoga's Benefits Outweigh Risks for Pregnant Women
Pre-Pregnancy Weight Linked to Babies' Heart Problems
SENIORS
The Juice From Beetroots May Boost Stamina
Rapid Weight Loss in Seniors Signals Higher Dementia Risk
Save Your Aging Brain, Try Surfing The Web
SEXUAL HEALTH
SLEEP DISORDERS
Sleeping Could Help Women Lose The Baby Fat
Pay Attention to Signs That Say You're Too Fatigued to Drive
Meditation May Help Put Primary Insomnia to Bed
WOMEN'S HEALTH
Acupuncture May Ease Depression During Pregnancy
How Much Fish to Eat While Pregnant?
Air Pollution Slows Women's Marathon Times
Add your Article

Low Vitamin A, C Intake Tied to Asthma Risk

THURSDAY, April 16 (HealthDay News) -- People who don't get enough of the antioxidant vitamins A and C in their diet may be at increased risk for asthma, British researchers say.

The pooled results of 40 studies conducted between 1980 and 2007 showed that people with asthma had a significantly lower dietary intake of vitamin A than those without the disease. The average intake among those with asthma was 182 micrograms a day, which is between a quarter and a third of recommended daily intake.

The review authors also found that people with severe asthma had a significantly lower intake of vitamin C (about half the recommended daily intake) than those with mild asthma. In addition, low circulating levels of vitamin C in the blood and lower dietary intake of foods containing vitamin C were associated with a 12 percent increased risk of asthma.

There was no association between vitamin E intake and asthma risk, but blood levels of vitamin E were much lower among people with severe asthma than in those with mild asthma. Those with severe asthma had an average vitamin E intake of 2 milligrams/day, which is 20 percent lower than the daily recommended amount, the review authors said.

These findings don't prove cause and effect, but they do challenge a study published last year that found no association between antioxidants and asthma risk, said Dr. Jo Leonardi-Bee, of the division of epidemiology and public health at the University of Nottingham in the United Kingdom, and colleagues.

"Overall, our findings from [the current] systematic review and meta-analysis indicate that low levels of vitamin C intake, and to a lesser extent vitamin A, are consistently associated with asthma risk to a degree that, if causal, would be sufficient to be clinically relevant," they concluded.

Their findings for an association between dietary antioxidants and wheezing were less consistent. The report was published in the current issue of Thorax.

More information

The U.S. National Heart, Lung, and Blood Institute has more about asthma.



-- Robert Preidt



SOURCE: BMJ Specialist Journals, news release, April 15, 2009

Last Updated: April 16, 2009

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