Two decades ago we found that many societies around the globe have fairly high prevalence of cousin marriages. In Pakistan, around 59% of marriages were between cousins (first cousins or 2nd).
Article Consanguinity and child mortality: The risk faced by families
Then a few years later we asked survey respondent why there was a preference for cousin marriages? Several reasons as benefits of cousin marriages were reported.
Are cousin marriages still popular in some of the societies (e.g., Pakistan, Egypt, India)?