ALLERGY, RESPIRATORY
Folic Acid Might Offer Allergy Relief
Molecule in Skin May Link Eczema and Asthma
Combating Myths About Seasonal Allergies
ALTERNATIVE MEDICINE
Grapefruit Compound Inhibits Hepatitis C Virus
Taking the Mystery Out of Hypnotherapy
Acupuncture Eases Breast Cancer Treatment Side Effects
ANIMAL CARE
Safe Toys for Dogs
Separation Anxiety, Canine-Style
'Comfort Dogs' Come to Emotional Rescue
BONES & JOINTS
For All Their Plusses, Pets Pose a Risk for Falls, Too
Scientists ID New Genes Tied to Crohn's Disease
More Faces Being Spared in Motor Vehicle Accidents
CANCER
Red Meat No No No But Oily Fish Yes Yes Yes
Want to Stop Cancer? You Can, Experts Say
Vitamin E, Selenium and Soy Won't Prevent Prostate Cancer
CAREGIVING
Depression, PTSD Common Among Lung Transplant Patient Caregivers
Study Links Pesticides to Birth Defects
Birthmark or Blood Vessel Problem?
CIRCULATORY SYSTEM
Migraines in Pregnancy Boost Vascular Risks
Obesity Linked to Heart Failure Risk
Potassium-Rich Foods May Cut Stroke, Heart Disease Risk
COSMETIC
Health Tip: After Liposuction
With Psoriasis, the Internet May Offer Hope
Get Sugared!.... Its a sweet choice for hair removal
DENTAL, ORAL
Periodontal Disease Impacts Whole Health
Gum Care Helps Control Type 2 Diabetes and Its Complications
Holistic Dentistry-My View
DIABETES
Arthritis Hits More Than Half of Diabetics
Findings Challenge Tight Glucose Control for Critically Ill Patients
Vitamin K Slows Insulin Resistance in Older Men
DIET, NUTRITION
Eating Lots Of Vegetables, Olive Oil May Extend Life
Antioxidants Abound in Cereals, Popcorn, Whole-Grain Snacks
Whole Grains, Bran May Fight Hypertension in Men
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
Artificial Light Linked to Prostate Cancer Risk
Cleaning House May Be Risky for Women With Asthma
EYE CARE, VISION
Hybrid Cars Pose Risk to Blind, Visually Impaired
Kids' Eye Injuries From Golf Clubs Rare But Severe
Sports Eye Injuries Leading Cause of Blindness in Youths
FITNESS
Barefoot Best for Running?
Consciousness Helps the Mind and Body Work Together
Any Exercise Good After a Heart Attack
GASTROINTESTINAL PROBLEMS
New Guidelines Issued for Management of IBS
Soothing Imagery May Help Rid Some Kids of Stomach Pain
Gum Chewing May Speed Colon Surgery Recovery
GENERAL HEALTH
Pay Attention to Signs That Say You're Too Fatigued to Drive
How Weight Loss Can Help the Heart
Family Medicine Cabinet Top Source Of Kid's Poisonings
HEAD & NECK
Ski Helmets Encouraged for All
Many Children Will Outgrow Headaches
Zen May Thicken Brain, Thwart Pain
HEALTH & TECHNOLOGY
Save Your Aging Brain, Try Surfing The Web
Subway Defibrillators Save Lives
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
Arteries Age Twice as Fast in Smokers
Psychiatric Drugs Might Raise Cardiac Death Risk
Years of Heavy Smoking Raises Heart Risks
INFECTIOUS DISEASE
Viral Infection Might Trigger High Blood Pressure
Swine Flu Now Reported in All 50 States
The HPV Vaccine: Preventative Medicine or Human Sacrifice?
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Should Your Child Be Seeing a Chiropractor?
Exercise Eases Obesity and Anger in Kids
Fussy Babys Could Be Out Of Your Control
MEN'S HEALTH
Physical Activity May Prolong Survival After Colon Cancer
Vigorous Exercise Cuts Stroke Risk for Men, Not Women
Low Iron Levels Cut Cancer Risk in Men With PAD
MENTAL HEALTH
Music Soothes Anxiety as Well as Massage Does
Daily dose of beet juice promotes brain health in older adults
Musicians' Brains Tuned to Emotions in Sound
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
Pre-Pregnancy Weight Linked to Babies' Heart Problems
For Baby and Mom Alike, Breast-Feeding May Be Best
Placebo Acupuncture Tied to Higher IVF Pregnancies
SENIORS
More Whole Grains May Mean Less Fat
Healthy Diet Could Cut Alzheimer's Disease Risk
Many Cancer Survivors Don't Adopt Healthy Lifestyle
SEXUAL HEALTH
SLEEP DISORDERS
Daylight Savings: Not a Bright Time for All
Better Sleep, Grades Seem to Go Up
6 to 8 Hours of Shut-Eye Is Optimal for Health
WOMEN'S HEALTH
Exercise During Pregnancy Keeps Newborn Size Normal
Flame-Retardant Chemical Linked to Conception Problems
Being Active an Hour a Day Puts Brakes on Weight Gain
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Amino Acid May Be Key to Strong Teeth

Scientists have identified the way a simple amino acid makes human teeth strong and resilient.

Proline is repeated in the center of proteins found in tooth enamel. When the repeats are long, such as in humans, they contract groups of molecules that help enamel crystals grow. When the repeats are short, such as in frogs, teeth don't have the enamel prisms that provide strength, the researchers explained.

The research offers clues on how to engineer tooth enamel.

"We hope that one day, these findings will help people replace lost parts of the tooth with a healthy layer of new enamel," lead researcher Tom Diekwisch, professor and head of oral biology at the University of Illinois at Chicago College of Dentistry, said in a news release.

But the benefits may extend well beyond teeth.

"Proline repeats are amazing. They hold the key to understanding the structure and function of many natural proteins, including mucins, antifreeze proteins, Alzheimer's amyloid and prion proteins," Diekwisch said. "We hope that our findings will help many other important areas of scientific research, including the treatment of neurodegenerative diseases."

The findings are published in the Dec. 21 online edition of the journal PLoS Biology.

SOURCES: University of Illinois at Chicago, news release, Dec. 21, 2009 Published on: December 22, 2009