The articles were identified using the PubMed search, using key terms related to food allergies: “children”, “adults”, “differences between children and adults”, “IgE-mediated food allergy”, “epidemiology”, ”pathogenesis”, “prevention”, “diagnosis”, “treatment”, “quality of life”, “non-IgE mediated food allergy”, “lipid transfer protein”, “anaphylaxis”, “oral food challenge test”, “skin prick test”, and “oral immunotherapy”. Here, IGHE is linked to food allergy.