ALLERGY, RESPIRATORY
Herbal Remedy Could Halt Peanut Allergy
Combating Myths About Seasonal Allergies
Folic Acid Might Offer Allergy Relief
ALTERNATIVE MEDICINE
Massage Fosters Healing in Bereaved Relatives
Yoga May Bring Calm to Breast Cancer Treatment
When Healing Becomes a Commodity
ANIMAL CARE
Separation Anxiety, Canine-Style
Beware of Dog Bites
Animals Respond to Acupuncture's Healing Touch
BONES & JOINTS
Most Kids With Type 1 Diabetes Lack Vitamin D
Put Your Best Foot Forward Next Year
Tai Chi May Help Ease Fibromyalgia
CANCER
Method for Treating Cervical Lesions May Pose Pregnancy Risks
Vitamin C Shows Promise as Cancer Treatment
Vitamin D May Improve Melanoma Survival
CAREGIVING
Health Tip: Benefitting From Adult Day Care
Coordination Has Led to Quicker Heart Treatment
Newborn Screenings Now Required Across U.S.
CIRCULATORY SYSTEM
Potassium-Rich Foods May Cut Stroke, Heart Disease Risk
Exercise May Blunt Salt's Effect on Hypertension
Common Antioxidant Might Slow Parkinson's
COSMETIC
What to Do If You Have Unsightly Veins
With Psoriasis, the Internet May Offer Hope
Wrinkle Fillers Need Better Label Warnings: FDA Panel
DENTAL, ORAL
Acid Drinks Blamed for Increase in Tooth Erosion
Hormones May Be to Blame for Women's Cavity Rates
Mom's Vitamin D Levels Affect Baby's Dental Health
DIABETES
Patients' Photos Help Boost Radiologists' Accuracy
Brown Rice Bests White for Diabetes Prevention
Exercise Protects Black Women From Type 2 Diabetes
DIET, NUTRITION
Mediterranean Diet May Help Prevent Depression
'Organic' May Not Mean Healthier
Eating Healthy : You Can Live Longer
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
Skin Woes Take Toll on U.S. Combat Troops
Flame-Retardant Chemical Linked to Conception Problems
Environmental Chemicals May Affect Male Reproduction
EYE CARE, VISION
Impotence Drugs Don't Harm Vision: Study
Blood Sugar Control Helps Diabetics Preserve Sight
Protein Might One Day Prevent Blindness
FITNESS
Moderate Aerobic Exercise Lowers Diabetics' Liver Fat
Diet, Exercise May Slow Kidney Disease Progression
Fall Cleanup Is a Prime Time for Accidents
GASTROINTESTINAL PROBLEMS
New Guidelines Issued for Management of IBS
Intestinal Bacteria Trigger Immune Response
Traditional Nonsurgical GERD Treatments Not Impressive
GENERAL HEALTH
Laughter Can Boost Heart Health
Heal Your Life® Tips for Living Well
Swine Flu Is Now a Pandemic Says W.H.O.
HEAD & NECK
Zen May Thicken Brain, Thwart Pain
Many Children Will Outgrow Headaches
Ski Helmets Encouraged for All
HEALTH & TECHNOLOGY
Study Suggests Link Between Cell Phones and Brain Tumors
The Internet Is Becoming One-Stop Shopping for Health Help
Magnet Therapy May Ease Hard-to-Treat Depression
HEARING
Noise Hurts Men's Hearing More, Study Shows
Summer Sounds Can Lead to Hearing Loss
HEART & CARDIOVASCULAR
Fondness for Fish Keeps Japanese Hearts Healthy
Fewer Heart Attacks After England Goes Smoke-Free
Research Shows Genetic Activity of Antioxidants
INFECTIOUS DISEASE
Viral Infection Might Trigger High Blood Pressure
Bacterial Infections May Succumb to Honey
Swine Flu Closes Three Schools in NYC
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Pregnant Women Exposed To Certain Pollutants Could Lower Childs IQ
3 Home Habits Help Youngsters Stay Slim
St. John's Wort Doesn't Work for ADHD
MEN'S HEALTH
Noise Hurts Men's Hearing More, Study Shows
Countdown to Hair Loss
Soy Linked to Low Sperm Count
MENTAL HEALTH
Chocolate a Sweet Pick-Me-Up for the Depressed
Love Hormone May Ease Discussion of Painful Topics
Music Soothes Anxiety as Well as Massage Does
PAIN
Are We Exercising Pain Away? Not So Much.
Alleviating Rheumatoid Arthritis
Acupuncture, Real or Fake, Eases Back Pain
PHYSICAL THERAPY
PREGNANCY
Before Conceiving, Take Folic Acid for One Full Year
Woman in America Are Delaying Motherhood, Study Says
Mom's Extra Pregnancy Pounds May Raise Child's Heart Risks
SENIORS
Fitness Fades Fast After 45
A Little Alcohol May Stave Off Alzheimer's
Save Your Aging Brain, Try Surfing The Web
SEXUAL HEALTH
SLEEP DISORDERS
Lose Weight, Sleep Apnea May Improve
Exercising Throat Muscles May Relieve Sleep Apnea
Sleeping Could Help Women Lose The Baby Fat
WOMEN'S HEALTH
Heart Defects in Newborns Linked to Antidepressants
Natural Relief for Painful Menstrual Cramps
Natural Therapies for Menopause
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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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