To add to this, from recall, is that the casein protein is very much like a protein in the Islets of Langerhan, which makes insulin. The immunoresponse to casein also means very similar proteins are attacked resulting in no insulin. This is type 1.

Given the number of people that are developing type 1, far more than in the past, this is a SERIOUS problem. ANother posted listed a study where type 1 women live 18 years less than the average. And managing this is very complicated. ( have a good friend who shares her adventures.)

Proteins trigger immune responses.