Via the Telegraph:
Prof Steve Jones, one of Britain’s most eminent scientists, has warned that the level of inbreeding among the nation’s Muslims is endangering the health of future generations.
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Prof Jones, who writes for the Telegraph’s science pages, told an audience at the Hay Festival: “There may be some evidence that cousins marrying one another can be harmful.
“It is common in the Islamic world to marry your brother’s daughter, which is actually closer than marrying your cousin.
“We should be concerned about that as there can be a lot of hidden genetic damage. Children are much more likely to get two copies of a damaged gene.”
He added: “Bradford is very inbred. There is a huge amount of cousins marrying each other there.” Research in Bradford has found that babies born to Pakistani women are twice as likely to die in their first year as babies born to white mothers, with genetic problems linked to inbreeding identified as a “significant” cause.(source)