Featured Research

from universities, journals, and other organizations

Children, males and blacks are at increased risk for food allergies, study finds

Date:
October 7, 2010
Source:
NIH/National Institute of Environmental Health Sciences
Summary:
A new study estimates that 2.5 percent of the United States population, or about 7.6 million Americans, have food allergies. Food allergy rates were found to be higher for children, non-Hispanic blacks, and males, according to the researchers. The odds of male black children having food allergies were 4.4 times higher than others in the general population.

A new study estimates that 2.5 percent of the United States population, or about 7.6 million Americans, have food allergies. Food allergy rates were found to be higher for children, non-Hispanic blacks, and males, according to the researchers. The odds of male black children having food allergies were 4.4 times higher than others in the general population.

The research, which was funded by the National Institutes of Health and appears in the Journal of Allergy and Clinical Immunology, is the first to use a nationally representative sample, as well as specific immunoglobulin E (IgE) or antibody levels to quantify allergic sensitization to common foods, including peanuts, milk, eggs, and shrimp. The hallmark of food allergy is production of IgE antibodies to a specific food protein. Once IgE antibody is made, further exposure to the food triggers an allergic response. IgE levels are often high in people with allergies.

"This study is very comprehensive in its scope. It is the first study to use specific blood serum levels and look at food allergies across the whole life spectrum, from young children aged 1 to 5, to adults 60 and older," said Darryl Zeldin, M.D., acting clinical director at the NIH's National Institute of Environmental Health Sciences (NIEHS) and senior author on the paper. "This research has helped us identify some high risk populations for food allergies." In addition to the identification of race, ethnicity, gender, and age as risk factors for food allergies, the researchers also found an association between food allergy and severe asthma.

Food allergy rates were highest (4.2 percent) for children 1 to 5 years. The lowest rates (1.3 percent) were found in adults over the age of 60. The prevalence of peanut allergies in children aged 1 to 5 was 1.8 percent and in children aged 6 to19, it was 2.7 percent. In adults, the rate was 0.3 percent.

The odds of patients with asthma and food allergies experiencing a severe asthma attack were 6.9 times higher than those without clinically defined food allergies.

"This study provides further credence that food allergies may be contributing to severe asthma episodes, and suggests that people with a food allergy and asthma should closely monitor both conditions and be aware that they might be related," said Andrew Liu, M.D., of National Jewish Health and the University of Colorado School of Medicine, Denver, and lead author on the paper.

The data used for the study comes from the National Health and Nutrition Examination Survey (NHANES) 2005-2006. NHANES is a large nationally representative survey conducted by the National Center for Health Statistics, a part of the Centers for Disease Control and Prevention.

Zeldin and Liu note more research is needed to understand why certain groups are at increased risk for food allergy. The authors comment in the paper that food allergies may be under-recognized in blacks, males, and children, because previous studies relied on self-reporting and not food-specific serum IgE levels.

"Having an accurate estimate of the prevalence of food allergies is helpful to public health policy makers, schools and day care facilities, and other care providers as they plan and allocate resources to recognize and treat food allergies," said Linda Birnbaum, Ph.D., NIEHS director.


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.


Journal Reference:

  1. Liu AH, Jaramillo R, Sicherer SH, Wood RA, Bock SA, Burks AW, Massing M, Cohn RD, Zeldin DC. National prevalence and risk factors for food allergy and relationship to asthma: Results from the National Health and Nutrition Examination Survey 2005-2006. J Allergy Clin Immunol., DOI: 10.1016/j.jaci.2010.07.026

Cite This Page:

NIH/National Institute of Environmental Health Sciences. "Children, males and blacks are at increased risk for food allergies, study finds." ScienceDaily. ScienceDaily, 7 October 2010. <www.sciencedaily.com/releases/2010/10/101004101139.htm>.
NIH/National Institute of Environmental Health Sciences. (2010, October 7). Children, males and blacks are at increased risk for food allergies, study finds. ScienceDaily. Retrieved July 31, 2014 from www.sciencedaily.com/releases/2010/10/101004101139.htm
NIH/National Institute of Environmental Health Sciences. "Children, males and blacks are at increased risk for food allergies, study finds." ScienceDaily. www.sciencedaily.com/releases/2010/10/101004101139.htm (accessed July 31, 2014).

Share This




More Health & Medicine News

Thursday, July 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

House Republicans Vote to Sue Obama Over Healthcare Law

House Republicans Vote to Sue Obama Over Healthcare Law

Reuters - US Online Video (July 31, 2014) The Republican-led House of Representatives votes to sue President Obama, accusing him of overstepping his executive authority in making changes to the Affordable Care Act. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Despite Health Questions, E-Cigs Are Beneficial: Study

Despite Health Questions, E-Cigs Are Beneficial: Study

Newsy (July 31, 2014) Citing 81 previous studies, new research out of London suggests the benefits of smoking e-cigarettes instead of regular ones outweighs the risks. Video provided by Newsy
Powered by NewsLook.com
Dangerous Bacteria Kills One in Florida

Dangerous Bacteria Kills One in Florida

AP (July 31, 2014) Sarasota County, Florida health officials have issued a warning against eating raw oysters and exposing open wounds to coastal and inland waters after a dangerous bacteria killed one person and made another sick. (July 31) Video provided by AP
Powered by NewsLook.com
Health Insurers' Profits Slide

Health Insurers' Profits Slide

Reuters - Business Video Online (July 30, 2014) Obamacare-related costs were said to be behind the profit plunge at Wellpoint and Humana, but Wellpoint sees the new exchanges boosting its earnings for the full year. Fred Katayama reports. Video provided by Reuters
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