This study was conducted on 3212 Saudi families to investigate the prevalence of consanguineous marriages. The families were interviewed and the information on the relationship between the husband and wife was obtained. The overall rate of consanguinity shows that 57.7% of the families screened were consanguineous. The most frequent were first cousin marriages (28.4%) followed by distant relative marriages (15.2%) and second cousin marriages (14.6%). The families were grouped according to the province of their origin and the consanguinity rates were calculated accordingly. There were slight differences in the consanguinity rates in the five provinces, which ranged from 52.1% to 67.7%. In each province first cousin marriages were the most frequently encountered pattern, ranging from 17.9% to 40.9%. The inbreeding coefficient (F) was calculated for each province and ranged from 0.020 to 0.030. Within each province, there were several significant differences among the populations in the different areas. The highest rate of consanguinity was 80.6% in Samtah and the lowest rate was around 34% in Abha in the South Western province. These results place Saudi Arabia among the countries of the world with a high rate of consanguinity. The possible consequences of increased consanguinity are presented and discussed.
Danish psychologist Nicolai Sennels studies the effects of Islamist inbreeding:
"If there are two things that characterize Islamic culture, they are terrorism and inbreeding. The latest research shows that these two things might be closely connected . . . First cousin marriages have been the tradition in many Muslim families for innumerable generations. Such marriages increase the risk of negative mental and physical consequences . . . Risk of mental retardation increases with 400 percent (Proceedings of the National Academy of Science, 1978 “Effect of inbreeding on IQ and mental retardation”). Research shows that the IQ is 10-16 points lower in children born from blood related parents and that abilities related to social behavior and empathy develops slower in inbred babies (Indian National Science Academy, 1983 “Consanguinity Effects on Intelligence Quotient and Neonatal Behaviours of nsari Muslim Children” [pdf]). Such facts might make several pieces fall into place for many people . . . People with low intelligence (because of inbreeding) might also be easier to brainwash with fundamentalist Islam. "
My emphasis.
There is the positive aspect to marrying within the family: the daughter being handed off to a husband is less likely to be beaten too much, tortured, and murdered.
Global prevalence of consanguinity
Coincidence? I don't think so.
(Sources of the images are in the links.)
I emphasize that it is my opinion that there is a difference between Muslim and Islamist.
It is going to take generations to undo the damage done by centuries of Islamist inbreeding -- if the Islamists were willing to try -- too many at the top live in a world of personal wide-body jets; too many imam millionaires and billionaires living with their "72 virgins" here on Earth. So we can forget counting on Islamist cooperation.
And too many in the West willing to sellout.