The geneticist Jim Wilson, at the University of Edinburgh, was shocked by the frequency he found in the U.K. Biobank, an anonymized research database: One in 7,000 people, according to his unpublished analysis, was born to parents who were first-degree relatives—a brother and a sister or a parent and a child. “That’s way, way more than I think many people would ever imagine,” he told me. And this number is just a floor: It reflects only the cases that resulted in pregnancy, that did not end in miscarriage or abortion, and that led to the birth of a child who grew into an adult who volunteered for a research study.

Most of the people affected may never know about their parentage, but these days, many are stumbling into the truth after AncestryDNA and 23andMe tests.

  • NounsAndWords@lemmy.world
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    2 years ago

    One in 7,000 people, according to his unpublished analysis, was born to parents who were first-degree relatives—a brother and a sister or a parent and a child. “That’s way, way more than I think many people would ever imagine,”

    Now I’m not walking around thinking I’m living in a porn movie, but a rate of 0.014% is not what I would call shocking.

    • ShareMySims@sh.itjust.works
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      2 years ago

      And this number is just a floor: It reflects only the cases that resulted in pregnancy, that did not end in miscarriage or abortion, and that led to the birth of a child who grew into an adult who volunteered for a research study.

      Either way, what number of parent raping and impregnating their child or sibling raping and impregnating their sibling would be shocking to you? Because to most people it’s probably “anything that isn’t zero”.

      • NounsAndWords@lemmy.world
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        2 years ago

        It’s shocking to you that rape exists? Clearly its a bad thing and shouldn’t happen, and it’s upsetting, but I would disagree that most people would be shocked if you told them “more than zero rapes happened this year”.

        • Leate_Wonceslace@lemmy.dbzer0.com
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          2 years ago

          While I agree with you in principle, I actually do think that 1/7k is unexpectedly high. If 1/10k people had an incestuous relationship, that would be low enough that I wouldn’t find it surprising. This study, if we take it to be cross-sectional, implies that the rate of incidence is much higher, at least on the order of 1/1k, possibly something around 1%. I don’t know the frequency that people of incestuous individuals have a child as a result, but the idea of it being higher than 1/7 strikes me as unlikely. Of course, multiple children can result from a pairing, so that has the potential to sway the numbers, but I’d hope that incestuous individuals are less likely to desire children from the relationship, and as a result would take a pregnancy as a sign to stop.

          • MagicShel@programming.dev
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            2 years ago

            You’re overplaying your hand here. Parent/child incest implies rape if the child is underage. Adult sibling/underage sibling implies rape. But incest of siblings who are similar age (whether adult or child) doesn’t necessarily imply rape. Even incest of a parent and their adult child doesn’t imply rape.

            Statistically I’d bet this is predominantly rape and you are largely correct, but by saying incest = rape you’ve overstepped a bit.

                • Riven@lemmy.dbzer0.com
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                  2 years ago

                  That dude sounds like he’s projecting. You’re just trying to clear up something that matters when talking about these sort of topics.

                  • DarkThoughts@fedia.io
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                    2 years ago

                    Yeah, it’s like those aggressive pedo hunters who DEFINITELY aren’t pedophile, but then get caught with a massive CP collection or during an attempt to woo a little kid.

    • SturgiesYrFase@lemmy.ml
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      2 years ago

      And this number is just a floor: It reflects only the cases that resulted in pregnancy, that did not end in miscarriage or abortion, and that led to the birth of a child who grew into an adult who volunteered for a research study.

      Meaning that this could be an indication of a wider incest…problem?..trend?..idk…

      Edit: it was literally the next sentence…