I have read that Pectin can stimulate a response in those with Celiac Disease. I have to recall where I got it from. Here, however, is an interesting look at Pectin https://www.food.actapol.net/pub/6_3_2007.pdf
I received the smallpox vaccine while in the Army, which may have caused my Iummonglobulins to raise, hence, I think the Army is responsible...