ALLERGY, RESPIRATORY
Combating Myths About Seasonal Allergies
Know Your Asthma Triggers
Herbal Remedy Could Halt Peanut Allergy
ALTERNATIVE MEDICINE
Bitter Melon Extract May Slow, Stop Breast Cancer
Animals Respond to Acupuncture's Healing Touch
Indian Spice May Thwart Liver Damage
ANIMAL CARE
'Comfort Dogs' Come to Emotional Rescue
Animals Respond to Acupuncture's Healing Touch
Safe Toys for Dogs
BONES & JOINTS
More Faces Being Spared in Motor Vehicle Accidents
Improved Hip Implants Can Last 20 Years
Vitamin K Doesn't Slow Bone Loss
CANCER
Bitter Melon Extract May Slow, Stop Breast Cancer
U.S. Reported 25,000 Cases of HPV-Related Cancers Annually
Yoga May Bring Calm to Breast Cancer Treatment
CAREGIVING
Babies Born in High Pollen Months at Wheezing Risk
UV Lights, Fans May Curb TB Spread in Hospitals
Early Exercise Boosts Outcomes for ICU Patients
CIRCULATORY SYSTEM
Obesity Linked to Heart Failure Risk
Anemia Rates Down for U.S. Women and Children
Bye, Bye Back Fat?
COSMETIC
Study Evaluates Laser Therapies for Hair Removal
Gum Chewing May Cut Craving for Snacks
Mouse Study Finds Molecule That Tells Hair to Grow
DENTAL, ORAL
Hormones May Be to Blame for Women's Cavity Rates
Holistic Dentistry-My View
Dental Implants Need More Work Than Root Canals
DIABETES
Diabetes Linked to Cognitive Problems
Doctors Urged to Screen Diabetics for Sleep Apnea
Strict Blood Sugar Lowering Won't Ease Diabetes Heart Risk
DIET, NUTRITION
Most Fast-Food French Fries Cooked in Unhealthiest Oil
Antioxidant-Rich Foods Lose Nutritional Luster Over Time
Go Healthy, Not Hungry for Holiday Eating
DISABILITIES
Review Finds Marijuana May Help MS Patients
Could Your Cell Phone Help Shield You From Alzheimer's?
ENVIRONMENTAL HEALTH
Pesticides on Produce Tied to ADHD in Children
Is It Safe to Go in the Gulf Coast's Water?
Ozone Pollution Taking Toll on American Lives
EYE CARE, VISION
Decorative Halloween Eye Lenses May Pose Serious Risks
Eye Care Checkups Tied to Insurance Status
Glaucoma Associated With Reading Impairments in Elderly
FITNESS
Higher Fitness Levels Tied to Lower Heart, Death Risks
Any Exercise Good After a Heart Attack
Seniors Who Exercise Help Their Health
GASTROINTESTINAL PROBLEMS
Peppermint Oil, Fiber Can Fight Irritable Bowel
HRT Use Raises Risk of Stomach Trouble
New Guidelines Issued for Management of IBS
GENERAL HEALTH
Treat symptoms (result of disease) or diagnose systems (cause of disease)?
Time to Remind Teens About Sun Protection
Any Old Cane Won't Do
HEAD & NECK
Zen May Thicken Brain, Thwart Pain
Ski Helmets Encouraged for All
Many Children Will Outgrow Headaches
HEALTH & TECHNOLOGY
Using Light Therapy to Silence Harmful Brain Activity
E-Mailing Your Way to Healthier Habits
Subway Defibrillators Save Lives
HEARING
Summer Sounds Can Lead to Hearing Loss
Noise Hurts Men's Hearing More, Study Shows
HEART & CARDIOVASCULAR
Too-Low Blood Pressure Can Also Bring Danger
Women Who Run May Benefit From Extra Folic Acid
Review Confirms Links Between Diet, Heart Health
INFECTIOUS DISEASE
Surgical Masks Could Prevent Flu, Maybe
The HPV Vaccine: Preventative Medicine or Human Sacrifice?
Dry Weather Boosts Odds of Flu Outbreaks
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Traffic Seems to Make Kids' Asthma Worse
Meaningful Conversations Boost Kids' Language Skills
Help Your Kids Stay Active
MEN'S HEALTH
Varicose Veins May Mask Larger Problem
Drinking Green Tea May Slow Prostate Cancer
Noise Hurts Men's Hearing More, Study Shows
MENTAL HEALTH
The Acne Drug Accutane More Than Doubles Depression Risk
Music Soothes Anxiety as Well as Massage Does
Fear Response May Stem From Protein in Brain
PAIN
Are We Exercising Pain Away? Not So Much.
Tai Chi May Help Ease Fibromyalgia
Alleviating Rheumatoid Arthritis
PHYSICAL THERAPY
PREGNANCY
Woman in America Are Delaying Motherhood, Study Says
Alternative Treatments May Boost IVF Success
Breast-Feeding May Protect a Woman's Heart
SENIORS
15-Point Test Gauges Alzheimer's Risk
A Little Alcohol May Stave Off Alzheimer's
The Healthy Habits of Centenarians
SEXUAL HEALTH
SLEEP DISORDERS
Meditation May Help Put Primary Insomnia to Bed
Daylight Savings: Not a Bright Time for All
6 to 8 Hours of Shut-Eye Is Optimal for Health
WOMEN'S HEALTH
Supportive Weigh-In Program Keeps Pounds Off
Frankincense Provides Relief for Osteoarthritis
Acupuncture May Ease Depression During Pregnancy
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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