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First cousin marriage

212 replies

Sprinklewithsugar · 08/06/2025 18:01

Trying to understand why this still happens in the UK between educated, intelligent people. Especially when the risks of genetic inbreeding are well known, not to mention the pressure it puts on the NHS.
Why do people opt to marry close cousins when there are surely other prospective spouses available?
Why do intelligent, educated people take part in such customs?
Genuinely curious.

OP posts:
Shimneycweep · 08/06/2025 19:52

ThePhantomoftheEcobubbleOpera · 08/06/2025 19:47

There's no drive to prioritise harmed children when there's a political risk that it will be framed as a dog whistle.

Sorry you’ve lost me, what is the dog whistle they’re concerned about it?

Supersimkin7 · 08/06/2025 19:52

It’s motivated by money (keep it in the family) and enabled by lots of religions, or religious phrases at any rate.

‘The Will of God’ comes up a lot. Bit rude to God, but there you are.

One offs are harmless, but look at the Hapsburgs and the Victorians to see what happens if families make a habit of it.

Cousin marriage disability does eventually kill off a lot of a family - the Hapsburg overbite grew too misshapen to eat & their LD became too bad to function. The children died.

The Romanovs were shot by Lenin but the tsar line had copped it with Victoria’s haemophilia genes anyway.

Zimunya · 08/06/2025 19:57

BethDuttonYeHaw · 08/06/2025 19:15

It’s been generations since there’s been a first cousin marriage so clearly they have changed their ways.

Excellent. If they could now change their ways to pay tax on their vast income we’d all be better off!

Gall10 · 08/06/2025 20:00

First cousin parents have around a 6% rate of genetic problems in their children compared to around 3% in non-related couples.
The major cause of first cousins having children is when they come from parents who were also cousins…and their parents were cousins…and so on and so on and so on.
There have been major studies in this in the Bradford area where first cousin marriages are more common.

DifficultEggs · 08/06/2025 20:04

This again? Mn seems weirdly obsessed with it. Having children with your first cousin when neither of you come from a line of previous cousin marriages involves a tiny increased risk, the same as if a woman has a child when she’s over 35.

It’s when there is endogamy within a small social group and hence a small genepool that more significant problems arise.

ThePhantomoftheEcobubbleOpera · 08/06/2025 20:06

Shimneycweep · 08/06/2025 19:52

Sorry you’ve lost me, what is the dog whistle they’re concerned about it?

The British Pakistani community has the highest rate of cousin marriages in the UK. Although, I think I read recently that it is a practice which is on the decline. But the topic is plagued with accusations of racism.

PumpkinsAndCoconuts · 08/06/2025 20:07

NotTellingYouMyRealOne · 08/06/2025 19:33

My PILs are cousins... they didn't know until after they were married! Basically a big family fall out many years before, leading to contact being lost and a very pleasant surprise at the wedding! (Reunited the family)

With families being even more disjointed now with marriage break ups etc you could argue that everyone should have genetic testing just in case before having children.

that would realistically lead to isolated cases of first cousin marriages and not repeated first cousin marriages over generations.

the latter is the real issues. People from a long line of cousin marriages getting married to (yet again) their first cousin.
Whereas an isolated case of first cousin marriage most likely wouldn’t be particularly problematic (at least from a genetic pov).

Shimneycweep · 08/06/2025 20:08

ThePhantomoftheEcobubbleOpera · 08/06/2025 20:06

The British Pakistani community has the highest rate of cousin marriages in the UK. Although, I think I read recently that it is a practice which is on the decline. But the topic is plagued with accusations of racism.

Ah, okay, thanks for this, I genuinely didn’t know this. I guess this muddies the waters somewhat, but still think it should be banned for the safety of future children.

pistachioicecream · 08/06/2025 20:12

There’s a very interesting conversation in a podcast with Matthew Syed about this that talks about some the reasons behind it. open.spotify.com/episode/2OalXkFnq78wqX9J8wYiHy?si=a-ovcnWfQKSPFkoUNyKOfQ

Winterwonders24 · 08/06/2025 20:13

Zimunya · 08/06/2025 18:05

First cousin marriage is very prevalent in many cultures. The only way to override it in the UK would be to change the law. But this wouldn’t stop those who are already married moving here.

we could write the law to stop them if we wanted

hjhjhjhjhj · 08/06/2025 20:14

Inbreeding is such a horrible word.

Ottersmith · 08/06/2025 20:15

It should be illegal, but I was assuming they were waiting for my intermarried royals to die off first. Maybe they are worried about upsetting certain cultures too. Needs to be banned though.

Ottersmith · 08/06/2025 20:17

DifficultEggs · 08/06/2025 20:04

This again? Mn seems weirdly obsessed with it. Having children with your first cousin when neither of you come from a line of previous cousin marriages involves a tiny increased risk, the same as if a woman has a child when she’s over 35.

It’s when there is endogamy within a small social group and hence a small genepool that more significant problems arise.

Yeah, but it's icky.

ThePhantomoftheEcobubbleOpera · 08/06/2025 20:18

hjhjhjhjhj · 08/06/2025 20:14

Inbreeding is such a horrible word.

Is there a pretty word for shagging in the family?

ShesTheAlbatross · 08/06/2025 20:19

I don’t understand why anyone would marry their first cousin.

But people have children all the time with increased risks of health issues. Older mothers for example have a much higher risk of having babies with certain conditions. No one suggests banning that.

Zanatdy · 08/06/2025 20:20

My ex’s brother and SIL are 1st cousins. They have 5 children, fortunately all healthy. Ex never told me they are cousins, I found out from SIL, she was showing me photos and I realised. I think ex didn’t tell me as someone at work was married to their 1st cousin and I commented that it was odd. My kids are all quite close to their cousins / grown up together but for ex’s DB and SIL they were raised in different countries. SIL was sent to the UK to marry at 16. The relationship with his parents fell apart within 18 months which in turn caused a family rift. They didn’t speak for 10yrs. Still it’s not a great relationship, largely as ex MIL can get very nasty (she once told them she hopes they all die in a plane crash as they weren’t taking her with them to the US as she wanted to see her sister).

A lot of places are doing a lot of education around the health risks and the rate of 1st cousin marriages has declined in some places, which is good. I guess if you’re not going to have any kids then fine, but it’s selfish to risk if you do want kids. Thankfully so far none of their own DC have married a cousin.

Dutchesss · 08/06/2025 20:21

Would stopping marriage stop people having children together? Would there just be secret weddings or unwed cousins having children?

ThePhantomoftheEcobubbleOpera · 08/06/2025 20:22

ShesTheAlbatross · 08/06/2025 20:19

I don’t understand why anyone would marry their first cousin.

But people have children all the time with increased risks of health issues. Older mothers for example have a much higher risk of having babies with certain conditions. No one suggests banning that.

It's a startling order of risk and severity when there are successive generations of children born within the same family pool. That's the nub.

softlyfallsthesnow · 08/06/2025 20:22

It's a handy way of controlling women if they don't get much say over who they marry. I doubt they're all happy to marry their cousins. But land and money are important factors.

rolo3000 · 08/06/2025 20:23

My Nan married her first cousin!! They fell in love, but they hadn’t known each other growing up. My mum is perfectly healthy but they did have lots of miscarriages.

Icanthinkformyselfthanks · 08/06/2025 20:24

Zimunya · 08/06/2025 18:39

https://www.rd.com/list/royals-who-married-their-relatives/

The Royal Family will have to change their ways too.

@Zimunya , I’m unaware of British royals marrying first cousins in my lifetime (I’m 62) but of course everyone should abide by the same laws and it should not be legal to marry your first cousin.

Gcsunnyside23 · 08/06/2025 20:26

Zimunya · 08/06/2025 18:39

https://www.rd.com/list/royals-who-married-their-relatives/

The Royal Family will have to change their ways too.

The only 2 on the list that are first cousins are from the 1800s so I'd say they've changed, when it gets to 13th cousins it's not even a thing. I think the op is talking about in modern day society where science backed knowledge us available that it's wild people will still marry their first cousin knowing the risks

Legsninetynine · 08/06/2025 20:29

Icanthinkformyselfthanks · 08/06/2025 20:24

@Zimunya , I’m unaware of British royals marrying first cousins in my lifetime (I’m 62) but of course everyone should abide by the same laws and it should not be legal to marry your first cousin.

https://www.rd.com/list/royals-who-married-their-relatives/

NameChangedOfc · 08/06/2025 20:29

"Love has reasons which reason cannot understand" - Blaise Pascal

babasaclover · 08/06/2025 20:30

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