NHS defends cousin marriages because ‘only 15 percent lead to birth defects’

Midwives have been told about the benefits of “close relative marriage” in training documents that minimise the risks to couples’ children.

The documents claim “85 to 90 per cent of cousin couples do not have affected children” and warn staff that “close relative marriage is often stigmatised in England”, adding claims that “the associated genetic risks have been exaggerated”.