What else do you need to say?
The government of Saudia Arabia mandated testing for genetic issues.
Here’s the link for screening … Link. Which states:
Limiting the spread of some genetic blood diseases: sickle-cell anemia (SCA) and thalassemia, and some infectious diseases: hepatitis B, C and AIDS/HIV.
I’m sure this can’t be the only thing … but over 165,000 couples last year in the Saudia Arabia decided not to get married. Two blood born & 3 STI/STD’s account for all of that? There has to be tests for other things in the gene pool causing this too, doesn’t there?