Deborah,
I recall someone suggested that dinosaur wasn't on the stone age man diet!
This thread is a little confused because the suggestion that the diet should work for us follows from the scientifically / experimentally established knowledge that AS patients have elevated levels of klebs specific IgA, that starch foods are inadequately digested and that klebs just love it. The scientifically logical progression is to test this suggestion with a controlled dietary trial, but this the funding agencies have declined to do. The science is good so far, but until the trial, people can say, like kids, 'it ain't proven', 'there is no proof' etc. That is what the rheumies bleat.
So I think it wrong to suggest at this stage there are two distinct AS sub groups because then you are introducing another unknown etiology to confuse things when there are simpler explanations why diet doesn't work for a minority, such as GI tract damage, candidiasis and misdiagnosis. If the trial didn't give a positive result then OK, look elsewhere.
This we prescribe though no physician . . .
Our doctors say this is no month to bleed. (Rich. II)
