ALLERGY, RESPIRATORY
Traffic, Dust Linked to Asthma in Kids
'Safe' Ozone Levels May Not Be for Some
Using Music and Sports to Improve Kids' Asthma
ALTERNATIVE MEDICINE
Regular Yoga May Improve Eating Habits
Acupuncture May Ease Depression During Pregnancy
Uncover Why Turmeric Helps You Heal
ANIMAL CARE
Animals Respond to Acupuncture's Healing Touch
Rest Easy. When It Comes to Swine Flu, Your Pet Is Safe
Safe Toys for Dogs
BONES & JOINTS
Frankincense Provides Relief for Osteoarthritis
Rheumatoid Arthritis a Threat to the Heart
Postmenopausal Women With Breast Cancer Face Joint Issues
CANCER
Physical Activity May Prolong Survival After Colon Cancer
Multiple Screening Strategy Boosts Cervical Cancer Detection
Vitamin D May Improve Melanoma Survival
CAREGIVING
Coordination Has Led to Quicker Heart Treatment
When the Caregiver Becomes the Patient
Are Hospital Mobile Phones Dialing Up Superbugs?
CIRCULATORY SYSTEM
Obesity Linked to Heart Failure Risk
High Blood Fat Levels Common in Americans
Exercise Extends Life of Kidney Patients
COSMETIC
Contact Lenses Boost Kids' Self-Image
Science May Banish Bad Hair Days
Get Sugared!.... Its a sweet choice for hair removal
DENTAL, ORAL
Study Links Osteoporosis Drugs to Jaw Trouble
Laser Technology Spots Cavities Before They Start
An Oral Approach to Heart Disease
DIABETES
Diabetes Linked to Cognitive Problems
Red-Grape Compound May Improve Diabetes
Strict Blood Sugar Lowering Won't Ease Diabetes Heart Risk
DIET, NUTRITION
Indian Spice May Thwart Liver Damage
The Food Irradiation Story
Western Diet Linked To Heart Disease, Metabolic Syndrome
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
Fish in U.S. Rivers Tainted With Common Medications
Common Pesticide Tied to Development Delays in Kids
Gas Stove Emissions Boost Asthma in Inner-City Kids
EYE CARE, VISION
Kids Who Spend More Time Outdoors Have Better Vision
Statin Drugs Cause Eye Disorders
It's a Whole New Outlook for Cataract Patients
FITNESS
More Steps a Day Lead to Better Health
Higher Fitness Levels Tied to Lower Heart, Death Risks
Being Active an Hour a Day Puts Brakes on Weight Gain
GASTROINTESTINAL PROBLEMS
Soothing Imagery May Help Rid Some Kids of Stomach Pain
New Yogurt May Ease Stomach Ulcers
Gum Chewing May Speed Colon Surgery Recovery
GENERAL HEALTH
A Honey of a Sinusitis Treatment
'Cell Phone Elbow' -- A New Ill for the Wired Age
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
Combating Myths About Seasonal Allergies
Airport Full Body Scanners Pose No Health Threat: Experts
Using Light Therapy to Silence Harmful Brain Activity
HEARING
Noise Hurts Men's Hearing More, Study Shows
Summer Sounds Can Lead to Hearing Loss
HEART & CARDIOVASCULAR
Rheumatoid Arthritis a Threat to the Heart
A Little Chocolate May Do the Heart Good
Women Who Run May Benefit From Extra Folic Acid
INFECTIOUS DISEASE
The HPV Vaccine: Preventative Medicine or Human Sacrifice?
Grapefruit Compound Inhibits Hepatitis C Virus
Older Adults May Have Some Immunity to Swine Flu
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Traffic, Dust Linked to Asthma in Kids
Frequent Feedings May Be Making Babies Fat
When It Comes to Toys, Shop Smart, Shop Safe
MEN'S HEALTH
Drinking Green Tea May Slow Prostate Cancer
The Dark Side of Vegetarianism
Lots of Sex May Prevent Erectile Dysfunction
MENTAL HEALTH
Consciousness Helps the Mind and Body Work Together
Love Hormone May Ease Discussion of Painful Topics
17 Ways to Create the Perfect Workday
PAIN
Tai Chi May Help Ease Fibromyalgia
Acupuncture, Real or Fake, Eases Back Pain
Are We Exercising Pain Away? Not So Much.
PHYSICAL THERAPY
PREGNANCY
Breast-Feeding Benefits Moms and Babies
Before Conceiving, Take Folic Acid for One Full Year
Acupuncture May Ease Depression During Pregnancy
SENIORS
Any Old Cane Won't Do
Keeping Mentally Active Seems To Keep The Brain Active
Older Adults May Have Some Immunity to Swine Flu
SEXUAL HEALTH
SLEEP DISORDERS
6 to 8 Hours of Shut-Eye Is Optimal for Health
Moderate Aerobics May Ease Insomnia Symptoms
Pay Attention to Signs That Say You're Too Fatigued to Drive
WOMEN'S HEALTH
Simple Carbs Pose Heart Risk for Women
Frankincense Provides Relief for Osteoarthritis
Steady Weight Gain Boosts Late-Life Breast Cancer Risk
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Vitamin K Slows Insulin Resistance in Older Men

FRIDAY, Dec. 5 (HealthDay News) -- Vitamin K slows the development of insulin resistance in older men, but not women, a new study found.

Insulin resistance, a precursor to diabetes, occurs when the body cannot use insulin properly. As a result, glucose builds up in the blood. Overweight and obese people are prone to insulin resistance, because excess fat can interfere with insulin function.

The three-year study, by researchers at the Jean Mayer Human Nutrition Research Center on Aging at Tufts University in Boston, included 355 non-diabetic men and women ages 60 to 80. One group took daily multivitamins containing 500 micrograms of vitamin K (five times the recommended level), along with a calcium and vitamin D supplement. The other (control) group took no vitamin K supplementation but did receive the multivitamin and the calcium and vitamin D supplement. Both groups were told to keep eating their normal diets.

By the end of the study, the men who took vitamin K had improved insulin resistance and lower blood insulin levels than men in the control group. The study was published in the November issue of the journal Diabetes Care.

"Men who received vitamin K supplementation had less progression in their insulin resistance by the end of the clinical trial. Conversely, we saw progression in insulin resistance in women who received vitamin K supplementation, and in the men or women who were not given vitamin K supplements," study senior author Sarah Booth, director of the Vitamin K Laboratory at the research center, said in a Tufts news release.

Weight may explain why vitamin K supplementation didn't appear to improve insulin resistance in older women.

"In our study, there was a higher prevalence of obese or overweight women in the vitamin K supplementation group compared to the male supplementation group," Booth said. "Vitamin K is stored in fat tissue. If there is excess fat, vitamin K may not be readily available to cells that require it to process glucose."

The amount of vitamin K contained in the supplements used in the study is attainable by consuming a healthy diet, the researchers said. Brussels sprouts, broccoli, and dark, leafy greens (such as spinach and collards) are good sources of vitamin K.

More information

The U.S. National Institute of Diabetes and Digestive and Kidney Diseases has more about insulin resistance and pre-diabetes.



-- Robert Preidt



SOURCE: Tufts University, news release, Nov. 26, 2008

Last Updated: Dec. 05, 2008

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