Why is Incest so much more prevalent in Muslim countries than anywhere else?

Why is Incest so much more prevalent in Muslim countries than anywhere else?
Especially Pakistan, which is the only country in the world where more than half of all sexual partnerships (a whopping 61.2%) are between first cousins, or even closely related members of the same family? Why are Muslim countries, and Muslim populations, so much more incestuous than everyone else?
Why is Incest so much more prevalent in Muslim countries than anywhere else?
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