IL5 and Alzheimer disease: Atopic disorders such as AD, asthma, and food allergy are associated with Th2 cell responses, elevated production of the type 2 cytokines IL-4, IL-5, and IL-13, and induction of immunoglobulin(Ig)E (Ständer, 2021; Hammad and Lambrecht, 2021; Yu et al., 2016; Tordesillas et al., 2017).