ALLERGY, RESPIRATORY
Overweight Moms More Likely to Have Asthmatic Kids
'Safe' Ozone Levels May Not Be for Some
Using Music and Sports to Improve Kids' Asthma
ALTERNATIVE MEDICINE
Acupuncture Eases Breast Cancer Treatment Side Effects
Awareness of Alternative Therapies May Be Lacking
Maggots as Good as Gel in Leg Ulcer Treatments
ANIMAL CARE
Separation Anxiety, Canine-Style
Rest Easy. When It Comes to Swine Flu, Your Pet Is Safe
Beware of Dog Bites
BONES & JOINTS
Backpack Safety Should Be on Back-to-School Lists
In Elderly Women, Hip Fractures Often Follow Arm Breaks
Alcohol Abuse Can Damage Bones
CANCER
Yoga Eases Sleep Problems Among Cancer Survivors
Vitamin D May Lower Colon Cancer Risk
Immune Therapy May Aid Kids With Neuroblastoma
CAREGIVING
Tiniest Babies Carry Biggest Costs
Diabetes Epidemic Now Poses Challenges for Nursing Homes
Falls Are Top Cause of Injury, Death Among Elderly
CIRCULATORY SYSTEM
Exercise May Blunt Salt's Effect on Hypertension
Salt Boosts Blood Pressure in High-Risk Patients
Tai Chi and Qigong Offer Many Health Benefits: Review
COSMETIC
What to Do If You Have Unsightly Veins
Science May Banish Bad Hair Days
Wrinkle Fillers Need Better Label Warnings: FDA Panel
DENTAL, ORAL
Scientists Find Gene for Tooth Enamel
Hormones May Be to Blame for Women's Cavity Rates
Periodontal Disease Impacts Whole Health
DIABETES
Laughter May Lower Heart Attack Risk in Diabetics
Fructose-Sweetened Drinks Up Metabolic Syndrome Risk
Exercise Protects Black Women From Type 2 Diabetes
DIET, NUTRITION
Heart Disease May Be Prevented By Taking Fish Oils, Study Shows
Natural Oils Help Lower Body Fat For Some
Fruits, Vegetables, Teas May Cut Smokers' Cancer Risk
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
Small Doses of Carbon Monoxide Might Help Stroke Victims
Cats Can Trigger Eczema in Some Infants
FDA Faulted for Stance on Chemical in Plastics
EYE CARE, VISION
Don't Lose Sight of Halloween Safety
Eye Problems, Hearing Loss May Be Linked
Just Like Skin, Eyes Can 'Burn' in Strong Sun
FITNESS
Being Active an Hour a Day Puts Brakes on Weight Gain
Marathoners Go the Distance on Heart Health
Tai Chi and Qigong Offer Many Health Benefits: Review
GASTROINTESTINAL PROBLEMS
Bowel Prep Harder on Women Than Men
Traditional Nonsurgical GERD Treatments Not Impressive
New Yogurt May Ease Stomach Ulcers
GENERAL HEALTH
Living With Less TV, More Sweat Boosts Weight Loss
Good Sleepers More Likely to Eat Right
More Single Women Are Having Babies
HEAD & NECK
Many Children Will Outgrow Headaches
Zen May Thicken Brain, Thwart Pain
Ski Helmets Encouraged for All
HEALTH & TECHNOLOGY
Magnet Therapy May Ease Hard-to-Treat Depression
Using Light Therapy to Silence Harmful Brain Activity
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
Laughter Can Boost Heart Health
Research Shows Genetic Activity of Antioxidants
Potassium-Rich Foods May Cut Stroke, Heart Disease Risk
INFECTIOUS DISEASE
Swine Flu Is Now a Pandemic Says W.H.O.
Dry Weather Boosts Odds of Flu Outbreaks
Surgical Masks Could Prevent Flu, Maybe
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Mom's Extra Pregnancy Pounds May Raise Child's Heart Risks
Plastics Chemical Tied to Aggression in Young Girls
Wood Fires Can Harm the Youngest Lungs
MEN'S HEALTH
Exercise May Prevent Prostate Cancer: Study Shows
Physical Activity May Prolong Survival After Colon Cancer
Low Iron Levels Cut Cancer Risk in Men With PAD
MENTAL HEALTH
Love Hormone May Ease Discussion of Painful Topics
Consciousness Helps the Mind and Body Work Together
Estrogen May Help Men's Hearts
PAIN
Tai Chi May Help Ease Fibromyalgia
Are We Exercising Pain Away? Not So Much.
Alleviating Rheumatoid Arthritis
PHYSICAL THERAPY
PREGNANCY
Breast-Feeding May Protect a Woman's Heart
Acupuncture May Ease Depression During Pregnancy
Music of Mozart Soothes the Preemie Baby
SENIORS
For Older Walkers, Faster Is Better
Memory Loss Help from Brain Supplement Prevagen
High-Impact Activity May Be Good for Old Bones
SEXUAL HEALTH
SLEEP DISORDERS
Pay Attention to Signs That Say You're Too Fatigued to Drive
6 to 8 Hours of Shut-Eye Is Optimal for Health
Exercising Throat Muscles May Relieve Sleep Apnea
WOMEN'S HEALTH
Natural Childbirth Moms More Attuned to Babies' Cry
Calcium Helps Ward Off Colon Cancer
A Brisk Pace May Keep Stroke at Bay
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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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