ALLERGY, RESPIRATORY
Molecule in Skin May Link Eczema and Asthma
Asthmatics Who Quit Smoking May Reverse Lung Damage
Air Quality Better in Northeast, Midwest
ALTERNATIVE MEDICINE
Regular Yoga May Improve Eating Habits
Wristbands May Lessen Nausea After Radiation
Taking the Mystery Out of Hypnotherapy
ANIMAL CARE
Beware of Dog Bites
Rest Easy. When It Comes to Swine Flu, Your Pet Is Safe
Safe Toys for Dogs
BONES & JOINTS
Osteoporosis May Raise Risk for Vertigo
Rheumatoid Arthritis May Harm Gums
Tai Chi May Help Ward Off Knee Pain in Seniors
CANCER
Antioxidants Pose No Melanoma Threat
No Verdict Yet on Grape Seed Extract vs. Breast Cancer
Some Spices Cut Cancer Risk That Comes With Grilled Burgers
CAREGIVING
Many Hospital Patients Can't ID Their Doctors
Many Alzheimer's Caregivers Admit to Abusive Behavior
Falls Are Top Cause of Injury, Death Among Elderly
CIRCULATORY SYSTEM
Secondhand Smoke Quickly Affects Blood Vessels
Vitamins Do Older Women Little Good
Varicose Veins May Mask Larger Problem
COSMETIC
Gum Chewing May Cut Craving for Snacks
Wrinkle Fillers Need Better Label Warnings: FDA Panel
Study Evaluates Laser Therapies for Hair Removal
DENTAL, ORAL
Holistic Dentistry-My View
Biological Product Shows Promise Against Gum Disease
Most Insured Adults Worry About Health Care Costs: Poll
DIABETES
Fish Twice a Week Cuts Diabetics' Kidney Risks
Fructose-Sweetened Drinks Up Metabolic Syndrome Risk
Chamomile Tea May Ward Off Diabetes Damage
DIET, NUTRITION
Mediterranean Diet Helps Protect Aging Brain
Asparagus May Ease Hangover
Polyunsaturated Fats Really May Lower Heart Risk
DISABILITIES
Could Your Cell Phone Help Shield You From Alzheimer's?
Review Finds Marijuana May Help MS Patients
ENVIRONMENTAL HEALTH
Stomach Germ May Protect Against Asthma
Radiation Exposure Linked to Aggressive Thyroid Cancers
Climate Change Could Sting Allergy, Asthma Sufferers
EYE CARE, VISION
When Corks Fly, Watch the Eyes
Americans Losing Sight of Eye Health
Eye Test Could Spot Diabetes Vision Trouble Early
FITNESS
Walk Long, Slow and Often to Help the Heart
Avoiding a Holiday Season of Discontent
Fliers Can Keep Blood Clots at Bay
GASTROINTESTINAL PROBLEMS
New Yogurt May Ease Stomach Ulcers
Soothing Imagery May Help Rid Some Kids of Stomach Pain
Traditional Nonsurgical GERD Treatments Not Impressive
GENERAL HEALTH
Heart Disease May Be Prevented By Taking Fish Oils, Study Shows
Even Young Kids Can Learn CPR
Meat Additives May Be Dangerous for Kidney Patients
HEAD & NECK
Zen May Thicken Brain, Thwart Pain
Many Children Will Outgrow Headaches
Ski Helmets Encouraged for All
HEALTH & TECHNOLOGY
The Internet Is Becoming One-Stop Shopping for Health Help
Save Your Aging Brain, Try Surfing The Web
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
Fondness for Fish Keeps Japanese Hearts Healthy
Heart Disease May Be Prevented By Taking Fish Oils, Study Shows
Lack of Vitamin D Linked to High Blood Pressure
INFECTIOUS DISEASE
Poor Restroom Cleaning Causes Cruise-Ship Sickness
Bacterial Infections May Succumb to Honey
Grapefruit Compound Inhibits Hepatitis C Virus
INFERTILITY
Obesity May Affect Fertility in Young Womene
KID'S HEALTH
Pregnant Women Exposed To Certain Pollutants Could Lower Childs IQ
Decline of Underweight Children in U.S. Continue to Fall
Too Many Infants Short on Vitamin D
MEN'S HEALTH
Low Vitamin D Levels May Boost Men's Heart Attack Risk
Eating Fast Until Full Triples Overweight Risk
Lots of Sex May Prevent Erectile Dysfunction
MENTAL HEALTH
Fear Response May Stem From Protein in Brain
Keeping a Healthy Holiday Balance
Consciousness Helps the Mind and Body Work Together
PAIN
Tai Chi May Help Ease Fibromyalgia
'Cell Phone Elbow' -- A New Ill for the Wired Age
Are We Exercising Pain Away? Not So Much.
PHYSICAL THERAPY
PREGNANCY
Sleeping Could Help Women Lose The Baby Fat
Obesity May Affect Fertility in Young Womene
Placebo Acupuncture Tied to Higher IVF Pregnancies
SENIORS
Seniors Who Volunteer May Live Longer
15-Point Test Gauges Alzheimer's Risk
More Whole Grains May Mean Less Fat
SEXUAL HEALTH
SLEEP DISORDERS
Moderate Aerobics May Ease Insomnia Symptoms
6 to 8 Hours of Shut-Eye Is Optimal for Health
Daylight Savings: Not a Bright Time for All
WOMEN'S HEALTH
Frankincense Provides Relief for Osteoarthritis
Sleeping Could Help Women Lose The Baby Fat
Green Tea May Help Treat Uterine Fibroids
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Decline of Underweight Children in U.S. Continue to Fall

WEDNESDAY, July 15 (HealthDay News) -- The number of underweight children aged 2 to 19 in the United States decreased from 5.1 percent in 1971-1974 to 3.3 percent in 2003-2006, says a U.S. government study.

Being underweight can be caused by malnutrition or underlying health problems.

Researchers at the U.S. Centers for Disease Control and Prevention's National Center for Health Statistics analyzed results from the 2003-2006 National Health and Nutrition Examination Survey (NHANES) and compared them with results from the 1970s. They found that underweight decreased from 5.8 percent to 2.8 percent among children aged 2 to 5, from 5.3 percent to 2.7 percent among children aged 6 to 11, and from 4.7 percent to 3.8 percent among those aged 12 to 19.

Surveys before 1971 didn't include children aged 2 to 5, the authors of the report noted.

The NHANES participants underwent a household interview and a physical examination that included weight and height measurements taken by trained health technicians using standardized measuring procedures and equipment.

Children with body-mass index (BMI) values below the 5th percentile of the sex-specific BMI-for-age growth charts are classified as underweight.

SOURCES: U.S. Centers for Disease Control and Prevention, news release, July 15, 2009