ALLERGY, RESPIRATORY
Overweight Moms More Likely to Have Asthmatic Kids
Air Quality Better in Northeast, Midwest
Climate Change Could Sting Allergy, Asthma Sufferers
ALTERNATIVE MEDICINE
Soybean Chemicals May Reduce Effects of Menopause
Pain-Relieving Powers of Acupuncture Unclear
Birds Don't Miss a Beat
ANIMAL CARE
Rest Easy. When It Comes to Swine Flu, Your Pet Is Safe
Separation Anxiety, Canine-Style
'Comfort Dogs' Come to Emotional Rescue
BONES & JOINTS
Genes May Help Drive Rotator Cuff Injury
Gene Plays Key Role in Clubfoot
Brazilian Mint Tea Naturally Good for Pain Relief
CANCER
Occaisonal Dieting May Cut Breast Cancer, Study Says
Steady Weight Gain Boosts Late-Life Breast Cancer Risk
Yoga May Bring Calm to Breast Cancer Treatment
CAREGIVING
Simpler Sleep Apnea Treatment Seems Effective, Affordable
Mom's Smoking May Lead to SIDS
Many Alzheimer's Caregivers Admit to Abusive Behavior
CIRCULATORY SYSTEM
Bad Marriages Harder on Women's Health
Smog Tougher on the Obese
Firefighters Have Narrower-Than-Normal Arteries, Study Finds
COSMETIC
Science May Banish Bad Hair Days
Health Tip: After Liposuction
Gum Chewing May Cut Craving for Snacks
DENTAL, ORAL
Gum Disease Might Boost Cancer Risk
Biological Product Shows Promise Against Gum Disease
Hormones May Be to Blame for Women's Cavity Rates
DIABETES
Whole Grains Take a Bite Out of Type 2 Diabetes Risk
Strict Blood Sugar Lowering Won't Ease Diabetes Heart Risk
Findings Challenge Tight Glucose Control for Critically Ill Patients
DIET, NUTRITION
Vitamin B12 Key to Aging Brain
Licorice May Block Absorption of Organ Transplant Drug
Asparagus May Ease Hangover
DISABILITIES
Review Finds Marijuana May Help MS Patients
Could Your Cell Phone Help Shield You From Alzheimer's?
ENVIRONMENTAL HEALTH
1976 Italian Dioxin Release Damaged Babies' Thyroids
Greener Neighborhoods Mean Slimmer Children
Ozone-Depleting Inhalers Being Phased Out
EYE CARE, VISION
Just Like Skin, Eyes Can 'Burn' in Strong Sun
Eye Disease, Cognitive Decline Linked in Study
Guard Kids' Eyes Against Long-Term Sun Damage
FITNESS
Avoiding a Holiday Season of Discontent
Yoga Can Ease Lower Back Pain
FDA Mandates New Warnings for Botox
GASTROINTESTINAL PROBLEMS
HRT Use Raises Risk of Stomach Trouble
Peppermint Oil, Fiber Can Fight Irritable Bowel
Gum Chewing May Speed Colon Surgery Recovery
GENERAL HEALTH
Food and Water Supply Poisoned by Perchlorate
Whole Grains, Bran May Fight Hypertension in Men
More Whole Grains May Mean Less Fat
HEAD & NECK
Many Children Will Outgrow Headaches
Zen May Thicken Brain, Thwart Pain
Ski Helmets Encouraged for All
HEALTH & TECHNOLOGY
'Cell Phone Elbow' -- A New Ill for the Wired Age
The Internet Is Becoming One-Stop Shopping for Health Help
Combating Myths About Seasonal Allergies
HEARING
Summer Sounds Can Lead to Hearing Loss
Noise Hurts Men's Hearing More, Study Shows
HEART & CARDIOVASCULAR
Fondness for Fish Keeps Japanese Hearts Healthy
Ingredient in Dark Chocolate Could Guard Against Stroke
Low Vitamin D Levels Linked to Heart Disease
INFECTIOUS DISEASE
Swine Flu Is Now a Pandemic Says W.H.O.
Viral Infection Might Trigger High Blood Pressure
Swine Flu Loves a Crowd
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Obese Children More Likely to Suffer Lower Body Injuries
3 Home Habits Help Youngsters Stay Slim
Time to Remind Teens About Sun Protection
MEN'S HEALTH
Physical Activity May Prolong Survival After Colon Cancer
Could Chinese Herb Be a Natural Viagra?
More Vitamin C May Mean Less Chance of Gout
MENTAL HEALTH
The 3LS Wellness Program for Reversing Chronic Symptoms and Creating Lasting Health
Music Soothes Anxiety as Well as Massage Does
The Acne Drug Accutane More Than Doubles Depression Risk
PAIN
Acupuncture, Real or Fake, Eases Back Pain
Tai Chi May Help Ease Fibromyalgia
Are We Exercising Pain Away? Not So Much.
PHYSICAL THERAPY
PREGNANCY
Woman in America Are Delaying Motherhood, Study Says
Acupuncture May Relieve Acid Indigestation In Pregnancy
Before Conceiving, Take Folic Acid for One Full Year
SENIORS
Video Gaming Just Might Fight Aging
Exercise Helps Reduce Falls in Young and Old
Memory Loss Help from Brain Supplement Prevagen
SEXUAL HEALTH
SLEEP DISORDERS
Sleeping Could Help Women Lose The Baby Fat
Better Sleep, Grades Seem to Go Up
Meditation May Help Put Primary Insomnia to Bed
WOMEN'S HEALTH
Prenatal Stress May Boost Baby's Asthma Risk
Natural Childbirth Moms More Attuned to Babies' Cry
Natural Oils Help Lower Body Fat For Some
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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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