Inbreeding among British Muslims is threatening the health of their children, a leading geneticist warned yesterday. Professor Steve Jones, from University College London, said the common practice in Islamic communities for cousins to marry each other increased the risk of birth defects. ‘There may be some evidence that cousins marrying one another can be harmful,’ he told an audience at the Hay Festival. ‘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. ‘Bradford is very inbred. There is a huge...