not just immune disorder, i mean that "allergy kids" always seemed to be the 110lb scrawny ones, never go outside, never play sports, and burst in to tears for things that made other kids say "ow". idk but makes it seem like maybe there's as much nurture as nature here, i bet

ngl i think this is just a epigenetic shift from people who have been "raised weak" for several generations. i can't prove it completely but there is some research showing that kids with milk allergies end up runty:

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4362703/

https://www.jacionline.org/article/S0091-6749(19)31475-7/ful...