Very interesting, Maciamo. In making my way through the data, I did notice that there seems to be a discrepancy between the 8.7% DR 11 figure for Turkey in the chart and the map showing frequencies in Turkey over 25%.
Also interesting that Northern Italy with only 10% J2 still shows the correlation with DR11.
I've thought that perhaps there was a trade off: a higher frequency of certain auto-immune disorders for better adaptation to wheat.
In terms of actual disease frequency for something like RA the correlation seems to break down, however.
RA frequency by country.jpg
I also wonder how the studies which link autoimmune disorders to Neanderthal introgression fit in.