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I just found out today that type 1 diabetes is an autoimmune disease. When was this discovered?

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It probably would help people answering the question if you could link or quote from the source where you found this out. – Oreotrephes Dec 20 '13 at 20:55
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This question has two answers: The difference was first described in 1936 by Harold Percival Himsworth, which described it in this article. At this time it was established that there are two forms of Diabetes, one sensitive to insuline while the other is not. The terms Diabetes type 1 and 2 where established somewhere between 1974 and 1976, for details see the review "The discovery of type 1 Diabetes".

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Thanks. From the "discovery" article it appears the autoimmune theory really solidified around 1974. – Kim Dec 20 '13 at 20:29
It takes a while until such a concept is widely accepted. – Chris Dec 20 '13 at 20:31

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