National prevalence and risk factors for food allergy and relationship to asthma: Results from the National Health and Nutrition Examination Survey 2005-2006

Andrew H. Liu, Renee Jaramillo, Scott H. Sicherer, Robert A Wood, S. Allan Bock, A. Wesley Burks, Mark Massing, Richard D. Cohn, Darryl C. Zeldin

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Abstract

Background: The national prevalence and patterns of food allergy (FA) in the United States are not well understood. Objective: We developed nationally representative estimates of the prevalence of and demographic risk factors for FA and investigated associations of FA with asthma, hay fever, and eczema. Methods: A total of 8203 participants in the National Health and Nutrition Examination Survey 2005-2006 had food-specific serum IgE measured to peanut, cow's milk, egg white, and shrimp. Food-specific IgE and age-based criteria were used to define likely FA (LFA), possible FA, and unlikely FA and to develop estimates of clinical FA. Self-reported data were used to evaluate demographic risk factors and associations with asthma and related conditions. Results: In the United States, the estimated prevalence of clinical FA was 2.5% (peanut, 1.3%; milk, 0.4%; egg, 0.2%; shrimp, 1.0%; not mutually exclusive). Risk of possible FA/LFA was increased in non-Hispanic blacks (odds ratio, 3.06; 95% CI, 2.14-4.36), males (1.87; 1.32-2.66), and children (2.04; 1.42-2.93). Study participants with doctor-diagnosed asthma (vs no asthma) exhibited increased risk of all measures of food sensitization. Moreover, in those with LFA, the adjusted odds ratio for current asthma (3.8; 1.5-10.7) and an emergency department visit for asthma in the past year (6.9; 2.4-19.7) were both notably increased. Conclusion: Population-based serologic data on 4 foods indicate an estimated 2.5% of the US population has FA, and increased risk was found for black subjects, male subjects, and children. In addition, FA could be an under-recognized risk factor for problematic asthma.

Original languageEnglish (US)
JournalThe Journal of Allergy and Clinical Immunology
Volume126
Issue number4
DOIs
StatePublished - Oct 2010

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Keywords

  • Asthma
  • eczema
  • egg
  • food allergy
  • food sensitization
  • food-specific serum IgE
  • hay fever
  • milk
  • peanut
  • prevalence
  • risk
  • shrimp

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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