Health

African American children may have more food allergies

Studies suggest that genetic and environmental factors may play a higher role allergy ratio

NS Salynn Boyles
WebMD Health News

Reviewed by Laura J. Martin, MD

September 6, 2011-African-American children in the United States have a higher rate Food allergies More than children of other races, and new studies suggest that genetic and environmental factors may explain why.

Researchers have found that self-reported blacks are associated with a higher risk for everyone. Food allergies Examined. Genetically validated African ancestors were significantly associated with peanuts, but not milk. allergy..

The study is published at Pediatrics..

The findings highlight the potential pitfalls of self-reported racial dependence when examining racial disparities in illness, says pediatric allergy specialist and researcher Dr. Rajesh Kumar. MS, Of the Chicago Children’s Memorial Hospital.

Findings also confirm racial differences in previously reported food prevalence allergy With children teens.. However, more research is needed to understand how genes and the environment affect risk.

“It’s unclear how much of the difference we’ve seen is genetic and how much is due to the environmental factors associated with our ancestors,” says Kumar.

Children with food allergies

About 3 million children have food in the United States allergy, According to the American Academy allergy, asthma And immunology.

NS allergy Symptoms may be similar, but those for certain foods are very different from food intolerance.

NS Food allergies If the immune system identifies a particular food ingredient as an intruder, or Allergen It then produces antibodies that attack it.terrible Food allergies Reaction can lead to Anaphylaxis -Tightening the airways Dyspnea, Wheezing, Swelling-and even death.

Foods commonly associated with allergies include milk, eggs, fish, peanuts, shellfish, soy, Nuts, wheat.

Kumar has added to WebMD that it is a nationally representative national health. nutrition Regular survey (NHANES).

The study found that African-Americans were three times more at risk of food allergies than the general population, with African-American male children having the highest risk. Food allergies There is four times the risk in the United States.

The best food of all races in the United States allergy The percentage of children under 6 years old (4%) was reported. The percentage of adults over the age of 60 was the lowest (about 1%).

Food allergies and race

To better understand the reasons for racial disparities in food allergies, Kumar et al. Analyzed data on more than 1,100 predominantly minority children enrolled in a Boston-based birth survey.

Their analysis included an ancestral genetic assessment, especially in the United States, as self-identified races can underestimate genetic diversity, especially for African Americans and Hispanics. Kumar says.

“There are often big fluctuations, even within groups that are self-aware as a race,” he says.

Genetic ancestry was determined by measuring accepted genetic variation associated with offspring in Africa, Europe, and Asia.

About one in three study participants had evidence of food allergies. Self-reported blacks were associated with a more than double increase in risk of food allergies.

Genetic African ancestors Peanut allergyFor every 10% increase in African ancestry, the risk increases by 25%.

Kumar et al. Hypothesize that while environmental factors such as when food is introduced can be the main trigger for milk allergies, genes can play a larger role in peanut allergies.

Andrew H, who led the research on NHANES data. Liu, MD, told WebMD that a new study adds evidence that African Americans are at increased risk of food allergies.

Liu is an associate professor of pediatric allergies at the National Center for Jewish Medical Research in Denver.

“We still don’t know how much of this risk is due to African ancestry and genetic heritage, and how much is due to other causes,” he told WebMD. “But at the clinical level, this is what we need to know.”



question

Allergies can best be explained as follows:
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References

Source: Kumar, R. Pediatrics, October 2011. vol 128.Rajesh Kumar, MD, MS, Division of allergy and Immunology, Children’s Memorial Hospital, Chicago.Andrew H.Liu, MD, pediatric allergist, National Jewish Health, Denver.News release, American Academy of Pediatrics.Liu, A. Journal of Allergy and Clinical Immunology, November 2010. AmericanAcademyof Allergy, Asthma and Immunology. © 2011 WebMD, LLC. all rights reserved.

African American children may have more food allergies

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