i would bet money there are some defective Irish genes in there.
I had never heard of Irish Travelers genes. He may have some of those as well.
If you have Irish ancestors this is a list of some of the Irish Traveler’s diseases
https://www.orpha.net/data/Cns/Protocol/IE/ID115626NW.pdf
btw, one of the Irish diseases is Congenital Adrenal Hyperplasia.
I have this but they haven’t figured out if Congenital or Acquired yet.
This can really mess with your hormones and could cause a faulty sex drive.
The Biden family very likely has genetic issues as well as nuture issues. Hard to live up to Golden Boy War Hero Beau Biden