DNA methylation is the most commonly known type of long‐term epigenetic modification, with transcriptional activity being directly affected by level of methylation.68 Methylation and demethylation of DNA have been implicated in food allergy through several mechanisms yet the role of vitamin D has been seldom explored.69 Junge et al33 highlighted the significance of the relationship between vitamin D levels and a gene involved in allergic inflammation, thymic stromal lymphopoietin (TSLP). This evidence concerns the gene TSLP and food allergy.