Sánchez-García S1, Olaguibel JM2, Quirce S3, Ibáñez MD1 on behalf of the Pediatric Allergy Committee, Spanish Society of Allergy and Clinical Immunology
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1Allergy Section, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
2Allergy Department, Complejo Hospitalario Universitario de Navarra, Pamplona, Spain 3Allergy Department, Hospital Universitario La Paz, Madrid, Spain |
The past few decades have witnessed an increase in the prevalence of IgE-mediated food allergy (FA). For prevention strategies to be effective, we need to understand the causative factors underpinning this rise. Genetic factors are clearly important in the development of FA, but given the dramatic increase in prevalence over a short period of human evolution, it is unlikely that FA arises through germline genetic changes alone. A plausible hypothesis is that 1 or more environmental exposures, or lack thereof, induce epigenetic changes that result in interruption of the default immunologic state of tolerance.