Featured Research

from universities, journals, and other organizations

More Than Half The US Population Is Sensitive To One Or More Allergens

Date:
August 4, 2005
Source:
NIH/National Institute of Environmental Health Sciences
Summary:
More than fifty percent of the US population tested positive to one or more allergens, according to a large national study. The new findings, based on data from the third National Health and Nutrition Examination Survey (NHANES III), shows that 54.3% of individuals aged 6-59 years old had a positive skin test response to at least one of the 10 allergens tested.

More than fifty percent of the U.S. population tested positive to one or more allergens, according to a large national study. The new findings, based on data from the third National Health and Nutrition Examination Survey (NHANES III), shows that 54.3% of individuals aged 6-59 years old had a positive skin test response to at least one of the 10 allergens tested. The highest prevalence rates were for dust mite, rye, ragweed, and cockroach, with about 25% of the population testing positive to each allergen. Peanut allergy was the least common, with 9% of the population reacting positively to that food allergen.

The new findings published in the August issue of the Journal of Allergy and Clinical Immunology were conducted by researchers at the National Institute of Environmental Health Sciences (NIEHS) and the National Institute of Allergy and Infectious Diseases, both components of the National Institutes of Health.

A positive skin test result may mean the individual is more vulnerable to asthma, hay fever, and eczema. "Asthma is one of the world's most significant chronic health conditions," said David A. Schwartz, MD, the NIEHS Director. "Understanding what may account for the rising worldwide asthma rates will allow us to develop more effective prevention and treatment approaches."

NHANES III is a nationally representative survey conducted by the Centers for Disease Control and Prevention between 1988-1994 to determine the health and nutritional status of the U.S. population. Approximately 10,500 individuals participated in the skin testing. During these tests, skin was exposed to allergy-causing substances (allergens) and a positive test was determined by the size of the reaction on the skin. The 10 allergens tested include: Dust mite, german cockroach, cat, perennial rye, short ragweed, Bermuda grass, Russian thistle, White oak, Alternia alternata, and peanuts.

Researchers also compared skin test responses between NHANES III and the previous survey, NHANES II, conducted from 1976-1980. The prevalence of a positive skin test response was much higher in NHANES III than in NHANES II.

According to the lead author, Samuel J. Arbes, Ph.D. of NIEHS, "An increase in prevalence is consistent with reports from other countries and coincides with an increase in asthma cases during that time." In the U.S., the prevalence of asthma increased 73.9% from 1980 to 1996. However, Dr. Arbes was quick to point out that differences in skin test procedures between the two surveys prevent the authors from definitively concluding that the prevalence of skin test positivity has increased in the U.S. population.

"There is still much we don't understand about why some people become sensitized to allergens and others do not," said Darryl C. Zeldin, MD, senior author on the paper. "Much more research is needed in order for us to understand the complex relationships between exposures to allergens, the development of allergic sensitization, and the onset and exacerbation of allergic diseases such as asthma."

The researchers recently added an allergy component to NHANES 2005-2006. In addition to the other NHANES data collection components, dust samples from the homes of 10,000 individuals are being analyzed for allergens, and blood samples taken from these individuals are being examined for antibodies to those allergens. This new NHANES 2005-2006 allergy component will allow researchers to gain a greater understanding of asthma and the roles that indoor allergens play in asthma and other allergic diseases.

###

NIEHS, a component of the National Institutes of Health, supports research to understand the effects of the environment on human health. NIAID supports basic and applied research to prevent, diagnose and treat infectious diseases such as HIV/AIDS and other sexually transmitted infections, influenza, tuberculosis, malaria and illness from potential agents of bioterrorism. NIAID also supports research on transplantation and immune-related illnesses, including autoimmune disorders, asthma and allergies. For more information about allergens and other environmental health topics, please visit the NIEHS website at http://www.niehs.nih.gov/ or the NIAID website at http://www.niaid.nih.gov.


Story Source:

The above story is based on materials provided by NIH/National Institute of Environmental Health Sciences. Note: Materials may be edited for content and length.


Cite This Page:

NIH/National Institute of Environmental Health Sciences. "More Than Half The US Population Is Sensitive To One Or More Allergens." ScienceDaily. ScienceDaily, 4 August 2005. <www.sciencedaily.com/releases/2005/08/050804122930.htm>.
NIH/National Institute of Environmental Health Sciences. (2005, August 4). More Than Half The US Population Is Sensitive To One Or More Allergens. ScienceDaily. Retrieved April 25, 2014 from www.sciencedaily.com/releases/2005/08/050804122930.htm
NIH/National Institute of Environmental Health Sciences. "More Than Half The US Population Is Sensitive To One Or More Allergens." ScienceDaily. www.sciencedaily.com/releases/2005/08/050804122930.htm (accessed April 25, 2014).

Share This



More Health & Medicine News

Friday, April 25, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deadly Fungus Killing Bats, Spreading in US

Deadly Fungus Killing Bats, Spreading in US

AP (Apr. 24, 2014) A disease that has killed more than six million cave-dwelling bats in the United States is on the move and wildlife biologists are worried. White Nose Syndrome, discovered in New York in 2006, has now spread to 25 states. (April 24) Video provided by AP
Powered by NewsLook.com
Companies Ramp Up Wellness to Lower Health Costs

Companies Ramp Up Wellness to Lower Health Costs

AP (Apr. 24, 2014) That little voice telling you to exercise, get in shape and get healthy is probably coming from your boss. More companies are beefing up wellness programs to try and cut down their health care costs. (April 24) Video provided by AP
Powered by NewsLook.com
Blood From World's Oldest Woman Suggests Life Limit

Blood From World's Oldest Woman Suggests Life Limit

Newsy (Apr. 24, 2014) Scientists say for the extremely elderly, their stem cells might reach a state of exhaustion. This could limit one's life span. Video provided by Newsy
Powered by NewsLook.com
FDA Wants To Ban Sales Of E-Cigarettes To Minors

FDA Wants To Ban Sales Of E-Cigarettes To Minors

Newsy (Apr. 24, 2014) The Food and Drug Administration wants to crack down on the use of e-cigarettes, banning the sale of the product to minors. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins