Jonathan’s medical condition.
He was not born Paragangian and lived first 8 years in low tech village. So he would have a full immune system, more or less, so that part would not be a problem. [which would for the average exile]
He would have 40 years worth of lack of immune system.
Research aids Diseases.
create Laazingon syndrome. a disease which evolved on the earth ..Laazingon syndrome.
also need to figure out what memories are routinely blocked in files and what additional changes Sen'tran made to him to protect other people.