ALLERGY, RESPIRATORY
Traffic, Dust Linked to Asthma in Kids
Using Music and Sports to Improve Kids' Asthma
Overweight Moms More Likely to Have Asthmatic Kids
ALTERNATIVE MEDICINE
Quit Smoking the Holistic Way
Animals Respond to Acupuncture's Healing Touch
Ginger Can Ease Nausea From Chemotherapy Treatments
ANIMAL CARE
Safe Toys for Dogs
Separation Anxiety, Canine-Style
'Comfort Dogs' Come to Emotional Rescue
BONES & JOINTS
Put Your Best Foot Forward Next Year
Vitamin D Plus Calcium Guards Against Fractures
For All Their Plusses, Pets Pose a Risk for Falls, Too
CANCER
Green Tea May Help Prevent Oral Cancer
Papaya Could Be a Cancer Fighter
Many Cancer Patients Turn to Complementary Medicine
CAREGIVING
Caring for Aging Loved Ones Can Be a Catch-22
Health Tip: Benefitting From Adult Day Care
Most Women Struggle With Rising Health Care Costs
CIRCULATORY SYSTEM
An Apple a Day May Help Keep Heart Disease Away
Review Confirms Links Between Diet, Heart Health
Laughter Can Boost Heart Health
COSMETIC
Science May Banish Bad Hair Days
Get Sugared!.... Its a sweet choice for hair removal
What to Do If You Have Unsightly Veins
DENTAL, ORAL
Gum Care Helps Control Type 2 Diabetes and Its Complications
Sports Drinks May Be Tough on Teeth
Dental Implants Need More Work Than Root Canals
DIABETES
24 Million Americans Had Diabetes in 2007
Red-Grape Compound May Improve Diabetes
Saliva Test Could Monitor Type 2 Diabetes
DIET, NUTRITION
Teens Lose More Weight Using Healthy Strategies
5 Reasons why you could gain weight while dieting
Pesticides and How to Affordably Eat Organic or Reduce Pesticide Consumption
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
EPA Alerts Seniors to Carbon Monoxide Dangers
Researchers ID Genetic Markers for Esophageal Cancer
Global Warming Linked to Heightened Kidney Stone Risk
EYE CARE, VISION
Contact Lens Cases Often Contaminated
Kids Think Glasses Make Others Look Smart, Honest
Green Tea May Ward Off Eye Disease
FITNESS
Simple Steps Get Walkers Moving
Exercise Cuts Lung Cancer Risk in Ex-Smokers by 45%
You Can Get Great Exercise In The Garden
GASTROINTESTINAL PROBLEMS
New Guidelines Issued for Management of IBS
Traditional Nonsurgical GERD Treatments Not Impressive
HRT Use Raises Risk of Stomach Trouble
GENERAL HEALTH
Healthy Living Adds Years to Life
Healthy Eating While On Vacation
Have a Goal in Life? You Might Live Longer
HEAD & NECK
Zen May Thicken Brain, Thwart Pain
Ski Helmets Encouraged for All
Many Children Will Outgrow Headaches
HEALTH & TECHNOLOGY
'Comfort Dogs' Come to Emotional Rescue
Combating Myths About Seasonal Allergies
E-Mailing Your Way to Healthier Habits
HEARING
Summer Sounds Can Lead to Hearing Loss
Noise Hurts Men's Hearing More, Study Shows
HEART & CARDIOVASCULAR
Vitamin B3 May Help Repair Brain After a Stroke
Brown Rice Tied to Better Heart Health in Study
Research Shows Genetic Activity of Antioxidants
INFECTIOUS DISEASE
Hand Washing 10 Times a Day May Help Keep Flu Away
Dry Weather Boosts Odds of Flu Outbreaks
Older Adults May Have Some Immunity to Swine Flu
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Exercise Eases Obesity and Anger in Kids
Mom's Extra Pregnancy Pounds May Raise Child's Heart Risks
Backpack Safety Should Be on Back-to-School Lists
MEN'S HEALTH
Eating Fast Until Full Triples Overweight Risk
Lots of Sex May Prevent Erectile Dysfunction
Low Iron Levels Cut Cancer Risk in Men With PAD
MENTAL HEALTH
Estrogen May Help Men's Hearts
A Simple 'Thank You' Brings Rewards to All
Positive Brain Changes Seen After Body-Mind Meditation
PAIN
Are We Exercising Pain Away? Not So Much.
Acupuncture, Real or Fake, Eases Back Pain
Alleviating Rheumatoid Arthritis
PHYSICAL THERAPY
PREGNANCY
Pregnant Women Exposed To Certain Pollutants Could Lower Childs IQ
Pre-Pregnancy Weight Linked to Babies' Heart Problems
Music of Mozart Soothes the Preemie Baby
SENIORS
Tai Chi May Help Ward Off Knee Pain in Seniors
Fitness Fades Fast After 45
The Healthy Habits of Centenarians
SEXUAL HEALTH
SLEEP DISORDERS
Sleeping Could Help Women Lose The Baby Fat
Lose Weight, Sleep Apnea May Improve
6 to 8 Hours of Shut-Eye Is Optimal for Health
WOMEN'S HEALTH
Exercise, Weight Control May Keep Fibromyalgia at Bay
How Much Fish to Eat While Pregnant?
Supplements Might Reduce Breast Cancer Risk
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Eating Less May Slow Aging Process

MONDAY, July 14 (HealthDay News) -- Cutting just 300 to 500 calories a day from your diet could be the key to slowing the signs of aging and living longer, according to a new study.

Studies have long shown that reducing calorie intake slows the aging process in rats and mice. A popular theory is that fewer daily calories decreases production of the thyroid hormone triiodothyronine (T3), which then slows metabolism and tissue aging.

A new study, by Saint Louis University researchers, found this hormone decrease occurs when humans regularly skip rich desserts or substitute a turkey sandwich for a Big Mac and fries every day.

"Our research provides evidence that calorie restriction does work in humans like it has been shown to work in animals," study lead author Edward Weiss, associate professor of nutrition and dietetics at Saint Louis University's Doisy College of Health Sciences, said in a prepared statement. "The next step is to determine if this in fact slows age-related tissue deterioration. The only way to be certain, though, is to do a long-term study."

The findings, published in the June 2008 issue of Rejuvenation Research, are based on a study of healthy but sedentary, non-smoking, 50- to 60-year-old men and post-menopausal women. For a year, the volunteers participated in either: a calorie-restriction group that cut their daily calorie intake by 300 to 500 calories per day; a group that stayed on their regular diet and exercised regularly; or a group that maintained its normal routine.

While those in the calorie-restriction and exercise groups both lost body fat mass, only those in the calorie restriction group also had lower levels of the thyroid hormone.

Although a long-term study is still needed to determine if reducing T3 levels through calorie restriction does indeed slow the aging process, Weiss said cutting back on calories is a good idea.

"There is plenty of evidence the calorie restriction can reduce your risks for many common diseases including cancer, diabetes and heart disease," Weiss said. "And you may live to be substantially older."

Weiss warned that while cutting calories, people need to maintain a healthy diet by eating nutrient-rich foods. He noted that long-term slowing of the metabolism could also make people more prone to weight gain over time.

The key to maintaining a healthy weight, Weiss said, is keeping a consistent diet and exercising regularly.

More information

The Calorie Restriction Society has more about calorie restriction.



-- Kevin McKeever



SOURCE: Saint Louis University Medical Center, news release, July 2, 2008

Last Updated: July 14, 2008

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