In Britain, Labour Party MP Ann Cryer commissioned a report that found Pakistani Muslims engage in high rates of consanguineous marriage.
The report, commissioned by Ann Cryer, revealed that the Pakistani community accounted for 30 per cent of all births with recessive disorders, despite representing 3.4 per cent of the birth rate nationwide.
It is estimated that more than 55 per cent of British Pakistanis are married to first cousins, resulting in an increasing rate of genetic defects and high rates of infant mortality. The likelihood of unrelated couples having the same variant genes that cause recessive disorders are estimated to be 100-1. Between first cousins, the odds increase to as much as one in eight.
In Bradford, more than three quarters of all Pakistani marriages are believed to be between first cousins. The city's Royal Infirmary Hospital has identified more than 140 different recessive disorders among local children, compared with the usual 20-30.
This is all a recipe for societal decay.
People who in-breed effectively are constructing their own mini-society within the larger society. They feel less loyalty to government and fellow citizens.