read up on leaky gut syndrome..seems to also be behind many ailments..Adelle Kuhn gets into it in her 5 secrets for a healthy life.or some such title...the gist of it is you get tears in your gut, proteins etc. will leak through and body will react to them and develop autoimmune conditions...Also read up on celiac disease and gluten sensitivity. There are tests for this..I got one incidentally and found I am supposed to have it although I have no symptoms...mg