A document published under NHS England’s Genomics Education Programme has triggered widespread criticism and mockery after suggesting that first-cousin marriages may bring “stronger extended family support systems and economic advantages.”

While the guidance acknowledged the elevated risk of genetic disorders in first-cousin unions, many felt its language minimized the practice’s dangers.

Following backlash from the public and health experts, NHS England clarified that the document was not an official stance but a summary of scientific and policy discussions.

The NHS’ surprising guidance caught public attention

The guidance appeared last week, focusing on the genetics of consanguineous marriage, the medical term for unions between blood relatives.

In it, the document pointed to possib

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