You're a clinician who is poorly informed about Autism and should not be working with Autistic patients until you improve your knowledge base.
While asthma & allergies are not immune disorders, asthma & allergy symptoms are an immune response. So by treating my CD , I improve my asthma & allergy symptoms.
Lastly, there is zero peer-reviewed evidence supporting what you say. In fact, the research estimates a 90% heritability rate, which is in conflict with most of your statements/comments.
I certainly hope you keep these uninformed opinions to yourself at work, lest you be charged with malpractice.