Cousin marriages spark controversy in UK amid NHS comments

The National Health Service (NHS) in the UK has come under criticism for promoting the benefits of first‑cousin marriages, despite the higher risk of congenital conditions associated with such unions. Marrying first cousins has been legal in Britain since the 16th century, while current legislation already prohibits marriages between parents, children, and siblings. Conservative MP Richard Holden has tabled a bill to outlaw first‑cousin marriages, arguing that they pose a risk to children’s health; the bill is due for a second reading early next year.

In response to calls for reform, NHS England’s Genomics Education Programme published an article weighing the potential benefits and risks of cousin marriages. The article cited “stronger extended family support systems and economic advantages” as possible benefits, while acknowledging the increased risk of congenital conditions. It compared the genetic risk of cousin marriage to that of having children later in life or of smoking and drinking during pregnancy. Earlier material from a Bradford NHS trust suggested that cousin unions, linked to about 30 % of local birth defects, were comparable to white women delaying childbirth beyond the age of 34.

Critics argue that the guidance undermines awareness efforts and that the NHS should not be promoting a practice that endangers children’s health. Aisha Ali‑Khan, who lost three brothers to health problems she attributes to her parents’ cousin union, has spoken out against the practice, saying she does not want other families to experience what hers did. An NHS England spokesman clarified that the article was a summary of existing research and policy debate, not an official position, and that education and genetic counseling would be more effective than prohibition.

The debate surrounding first‑cousin marriages highlights the need for a balanced approach to the associated risks and benefits. While some argue that banning such marriages would effectively reduce congenital conditions, others believe that education and genetic counseling are more appropriate solutions. The issue is complex, requiring careful consideration of cultural, social, and economic factors. As the bill to outlaw first‑cousin marriages moves forward, the discussion is likely to continue, with proponents on both sides presenting their arguments.