Miranda et al. (2020) examined the effect of viable and supernatant cultures of S. cerevisiae on a mouse model of food allergy.They observed an attenuation of tissue damage and myeloperoxidase activity and a reduction in IL-17 levels, but no reduction in IgE and IgG anti-ovalbumin were obtained.They concluded that yeast had local but not systemic effects on the mouse model [ 36 ]. This evidence concerns the gene IL17A and food allergy.