What nouns is in that between autoimmune disorders and positive blood types ?

for instance my son is 14 and has type 1 diabetes. his blood type is O positive. did his blood type person positive make him more probable to develope an autoimmune disease?What nouns is in that between autoimmune disorders and positive blood types ?
blood type has nought to do with disease.
Although not much is certain about the cause of autoimmune diseases for certian, doctors believe that it is triggered by factors such as environment toxins, virus, and certain medication and usually it is hereditary.
Autoimmunity is related more to the antibodies within the blood turning against the natural body cells- it mistakes tough cells for infections, foreign cell etc and destroys them. It's more likely to be genetically predisposed to some extent than a result of O positive blood.
blood type and diabetes have nil connected. we might tend to say that inhabitants with Rh positive are more probable to get diabetes because 85% of adjectives population is Rh positive. auto immune diseases are caused by environmental issues which probally 'tick the signal' and activate/deactivate the genes.