It caused major infertility in the gulf, luckily it’s not practiced among somalis that much, many scholars consider it mustahabb (recommended) to marry non relatives
https://www.emirates247.com/news/em...infertility-in-gcc-report-2016-06-23-1.633837
https://www.emirates247.com/news/em...infertility-in-gcc-report-2016-06-23-1.633837