ALLERGY, RESPIRATORY
Childhood Food Allergies on the Rise
Obesity May Raise Kids' Allergy Risk
Herbal Remedy Could Halt Peanut Allergy
ALTERNATIVE MEDICINE
Acupuncture May Ease Depression During Pregnancy
U.S. Spends Billions On Alternative Medicine
Uncover Why Turmeric Helps You Heal
ANIMAL CARE
Beware of Dog Bites
Rest Easy. When It Comes to Swine Flu, Your Pet Is Safe
Separation Anxiety, Canine-Style
BONES & JOINTS
Gene Plays Key Role in Clubfoot
Varicose, Spider Veins May Be Inevitable for Some
Tips to Ease an Aching Back
CANCER
Asthmatics Who Quit Smoking May Reverse Lung Damage
Immune Therapy May Aid Kids With Neuroblastoma
Minorities Distrust Medical System More
CAREGIVING
Stressed Health Care Workers Battle 'Compassion Fatigue'
Caregiving May Lengthen Life
When the Caregiver Becomes the Patient
CIRCULATORY SYSTEM
Migraines in Pregnancy Boost Vascular Risks
Bye, Bye Back Fat?
Obesity Linked to Heart Failure Risk
COSMETIC
Contact Lenses Boost Kids' Self-Image
The Acne Drug Accutane More Than Doubles Depression Risk
Mouse Study Finds Molecule That Tells Hair to Grow
DENTAL, ORAL
Scientists Find Gene for Tooth Enamel
An Oral Approach to Heart Disease
Amino Acid May Be Key to Strong Teeth
DIABETES
'Standard' Glucose Test May Be Wrong One for Obese Children
Spices, Herbs Boost Health for Diabetics
Fructose-Sweetened Drinks Up Metabolic Syndrome Risk
DIET, NUTRITION
10 Beginner Tips for Fast Weight Loss, the Low-Carb Way!
Coffee or Tea Consumption May Lower Stroke Risk
Eating Healthy : You Can Live Longer
DISABILITIES
Review Finds Marijuana May Help MS Patients
Could Your Cell Phone Help Shield You From Alzheimer's?
ENVIRONMENTAL HEALTH
Short-Term Air Pollution Exposure May Damage DNA
Air Pollution Exposure May Slow Fetal Growth
Household Chemicals May Affect Cholesterol Levels
EYE CARE, VISION
Antioxidant-Rich Diet May Protect Against Eye Disease
Diabetic Hispanics Missing Out on Eye Exams
Cases of Age-Related Farsightedness to Soar
FITNESS
Living With Less TV, More Sweat Boosts Weight Loss
Fall Cleanup Is a Prime Time for Accidents
Barefoot Best for Running?
GASTROINTESTINAL PROBLEMS
HRT Use Raises Risk of Stomach Trouble
Traditional Nonsurgical GERD Treatments Not Impressive
Bowel Prep Harder on Women Than Men
GENERAL HEALTH
Cocaine Spurs Long-Term Change in Brain Chemistry
Brisk Walk Can Help Leave Common Cold Behind
U.S. Spends Billions On Alternative Medicine
HEAD & NECK
Zen May Thicken Brain, Thwart Pain
Ski Helmets Encouraged for All
Many Children Will Outgrow Headaches
HEALTH & TECHNOLOGY
Combating Myths About Seasonal Allergies
Subway Defibrillators Save Lives
The Internet Is Becoming One-Stop Shopping for Health Help
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
Small Cuts in Salt Intake Spur Big Drops in Heart Trouble
Soy Protein Doesn't Lower Cholesterol
INFECTIOUS DISEASE
Swine Flu Is Now a Pandemic Says W.H.O.
Grapefruit Compound Inhibits Hepatitis C Virus
Surgical Masks Could Prevent Flu, Maybe
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Teens Lose More Weight Using Healthy Strategies
Keep Safety in Mind While Your Kids Are Cooling Off in the Water
Obese Children More Likely to Suffer Lower Body Injuries
MEN'S HEALTH
Low Vitamin D Levels May Boost Men's Heart Attack Risk
Countdown to Hair Loss
Physical Activity May Prolong Survival After Colon Cancer
MENTAL HEALTH
Consciousness Helps the Mind and Body Work Together
Eight Spiritual Universal Principles in the Art of Practice
Breast-Fed Baby May Mean Better Behaved Child
PAIN
Tai Chi May Help Ease Fibromyalgia
'Cell Phone Elbow' -- A New Ill for the Wired Age
Acupuncture, Real or Fake, Eases Back Pain
PHYSICAL THERAPY
PREGNANCY
Prenatal Stress May Boost Baby's Asthma Risk
Before Conceiving, Take Folic Acid for One Full Year
Calcium Supplements Cut Blood Lead Levels During Pregnancy
SENIORS
Fitness Fades Fast After 45
Seniors Cope With Sleep Loss Better Than Young Adults
Healthy Diet Could Cut Alzheimer's Disease Risk
SEXUAL HEALTH
SLEEP DISORDERS
Lose Weight, Sleep Apnea May Improve
Moderate Aerobics May Ease Insomnia Symptoms
Sleeping Could Help Women Lose The Baby Fat
WOMEN'S HEALTH
Most Women With Osteoporosis Unaware of Raised Fracture Risk
Green Tea May Help Treat Uterine Fibroids
Heal Your Life® Tips for Living Well
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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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