I think I understand better now. Yasko says that the body can manipulate gene expression through methylation but she doesn't think it is possible for Science to do it currently so she works around it with supplements and such and doesn't bother retesting.
I believe the methylation that is causing negative symptoms is not an error but is being signaled for. I believe this signal can be stopped. Time will tell. Thanks for persisting through the brain fog to bring us knowledge!