Talking about diet and AS...
Thanks to MollyC1i
I've got it from here:
https://www.kickas.org/ubbthreads/ubbthreads.php?ubb=showflat&Number=465884&gonew=1#UNREAD"The researchers found that variants of the gene ERAP1 interact with HLA-B27 to affect disease susceptibility [...].
ERAP1 plays a role in breaking down proteins within the body into smaller molecules known as peptides. The gene interacts with HLA-B27 to affect how these peptides are presented to the immune system. This is an essential process for mounting an immune response to invading pathogens, but when it goes awry it can result in the immune system causing inflammation and damaging tissue"