It's a rare condition.
And why one twin would be afflicted and not the other ...
It needs to be researched further, agree.
Just reminded me of ( the movie ) "The Curious Case Of Benjamin Button". What a lovely, beautiful, sad, ingenius movie!
Interesting indeed. I just read where there have been identical twin studies where one twin had the genetic condition progeria and the other didn't. Yet, no one is questioning the link between genetics and progeria.