Marriage between first cousins

Newton's 4th Law:

A body will be attracted to another.

Newton's 5th Law:

Humping will inevitably follow.

Newton's 6th Law:

New bodies have a tendency to appear (depending on use of protective gear).

OK, Newton apparently died a virgin, so he never had a chance to test either of these...
 
Your anecdote against science. That was in the opening post, that was the foundation stone behind this thread. Do you dispute the scientifical findings? You think you know more than them based on your own evidence? Let's see it.
Against science? Oh no, I'm quite for science. It's just that while science supports what you've said, it says quite a bit more that has been ignored -- i.e. that the risk of inbreeding is not just the risk of birth defects in first generation children of that union, but is as well the risk of increasing the rate of birth defects for the entire population.

Please see

Livingstone, Frank B. 1969 "Genetics, Ecology, and the Origins of Incest and Exogamy" in Current Anthropology 10:45-62

and

Thornhill, Nancy, ed. 1993 The Natural History of Inbreeding and Outbreeding. Chicago: University of Chicago Press

for reference on my statements. Unfortunately I have been unable to find either online, and while I'm sure there are similar articles available online, I really couldn't be bothered to look for them.

Read Claus Larsen's post.
His post isn't a reason against having the laws, but more of a reason for adding more laws. Although, most of the dangers associated with late life child birth seem to be risks that the child will be born dead or the mother will die in the process -- which have little to no impact on the gene pool of a large population. And of those risks that don't involve death, how many of them are recessive genes that would be passed on to others in the population? I think Claus is comparing apples and oranges here. But I do agree that women over a certain age having children is a bit worrisome in more ways than just those that are biological. I, personally, decided long ago that I wouldn't have children after I turned 35 -- both for biological reasons and social reasons alike.

The RCC is a religion, not a culture. And I asked for evidence of this practice by the RCC, for which you provided none.
Alright, since I seem to have misunderstood what your response meant:

http://writ.news.findlaw.com/grossman/20020408.html

In England, incest was punishable only in ecclesiastical courts, which ostensibly applied the law of Leviticus prohibiting persons more closely related than fourth cousins to marry. This ban applied equally to relations by blood and by marriage, based on the canonical maxim that husband and wife were one, and therefore equally related to each other's kin.
I won't go quoting bible verses at you, since I'm not religious in the least and would rather not spout anything of the sort anywhere. The only purpose of even mentioning the RCC was to support the "social and cultural taboo" side of the argument.


According to ddt, the prohibition doesn't exist in the Netherlands. Does it exist in China, btw, as you claimed? You seem to have a weakness with fact and evidence, that's why I ask.
I apologize for my statement about the Netherlands -- I read a quote which said it was no longer prosecuted there and thought that meant that it was still technically illegal, just not enforced. I cannot find the law itself, as I don't speak the language.

Your attempt to ascribe emotions that I don't have, or a personal involvement that I never implied, do feel like an ad hominem attack. And they speak more about your character than about mine.
You know, I'm honestly confused here. I'm not used to people throwing around words like "discrimination" "prejudice" "irrational" and "unjust" without there being some sort of vested interest. In fact, one of the reasons I ended up posting in this thread was because of that confusion. Afterall, it's not as if you posted "hey, I read this article, can someone explain the history and reasoning involved in these laws" -- instead there was an initial outcry about how wrong it was.

Funny that. I'm in a US-based board, where most members are Americans... and you have an issue as to why I direct a question to Americans?

Hey, Kiribatians, come here, I want to ask you a question!!
It's not that the question is directed to Americans. It's the accusation that Americans are doing something wrong by not repealing these laws (which have been around quite a long time, by the way), without giving any solid reason other than "well other countries don't have laws against this."

I've avoided giving much in the way of personal opinion on the matter thus far, trying to stick to more objective (and evidence based) things to cite. But here you go:

America's history is one of trying to distance themselves (socially and politically) from Europe as much as possible. In Europe, royalty was often ripe with inbreeding in order to keep power in the family (and yes, there were a fair number of birth defects that occurred as a result, though most of them were not horrific or overt). This is something the government here wanted to avoid -- having a single family (or small group of families) that controlled the people (through wealth or political power) while holding themselves separate even for purposes of breeding. The US was (as unfortunate as it may be) also founded by extremely religious persons, who followed laws spelled out in the bible -- one of which decries incest. In addition to that, the US was originally made up of a lot of very small enclaves of settlers that were spread so far apart as to make it difficult for people to find spouses outside their own families, which led to much inbreeding and resultant birth defects which were visible but not life threatening. The stereotype of inbreeding being "backwards" and "something the poor do" grew out of this last bit, as those who had enough money either travelled to find a spouse or got a mail order bride. The combination of trying to be less like europe, combined with religion, combined with occurrences of these inbred enclaves, all contributed to the making of laws against marrying one's own first cousin. States that did not have those particular histories, or were not geographically near those who did, do not have those laws as there wasn't a problem they needed to address.

In more recent times (what with the advent of cheap and easy to obtain birth control), incestuous relationships maybe be viewed as less of a biological risk, but there are still biological concerns (i.e. raising the overall birth defect rate of a population) enough that justify, to me, keeping the law. Of course, if humans were as casual about their own lives as they were about those of livestock, maybe I wouldn't object. See, with livestock and other animal breeding, when a serious recessive trait occurs the animal is "culled from the herd" (killed), preventing it from propagating further. But humans would never kill a child that has been born with a birth defect, nor would they take measures to ensure it would never have children of it's own. We see it as immoral, and have made it illegal just as we have made assisted suicide illegal. Even the subject of aborting a fetus with a definite genetic abnormalities is extremely controversial -- heck, aborting a fetus for ANY reason is controversial still!

Then there's the whole subject of abuse. How many incestuous relationships came about due to coercion? How many relationships between cousins (or brothers and sisters) are based upon emotional and physical abuse? There aren't really any answers to this, in regards to adult relationships, that I've been able to find. I'm sure some of these relationships are perfectly healthy, but I need more than my own idle speculation. I know I've seen statistics on pre-adulthood incest and how much of that is based upon abuse. If the ratio continues to adult relationships of the same familial nature, well, then the ban on such relationships is more than justified in my eyes.
 
For instance, I just read that a WA state legislator wants to have the State collect DNA samples (and store the information in a database) for anyone arrested for a felony. Not convicted, nor even charged: simply arrested for a felony! This is an enormous violation of the accused's right to privacy, and implies a presumption of guilt that is in direct conflict with the fundamentals of our justice system.

This is already the situation in Britain.

http://www.independent.co.uk/news/u...britain-into-a-nation-of-suspects-422434.html

Everyone who has ever been arrested by the police, even if they are not charged, is obliged to provide a DNA sample for the national database, which also includes victims of crime and others who have volunteered a sample to help a criminal investigation.

Once someone has agreed to provide a DNA sample to the database they have no automatic right to have it removed or destroyed at a later date.
</derail>
 
The data I provided in my post most certainly did not show that most of the dangers associated with late life child birth were risks that the child will be born dead or the mother will die in the process.

T'is not wise to try such crude tactics. Not with me. I will spot them.

Will the data be ignored, or glossed over? That, I will spot, too.



Can we see evidence of this over-representation of genetic birth defects with European royalty due to inbreeding?

Maybe, if we're lucky, can we also know the names of which states in the US the discussion is about?
 
The data I provided in my post most certainly did not show that most of the dangers associated with late life child birth were risks that the child will be born dead or the mother will die in the process.
Oh? 2 of the sections in your post dealt only with down's syndrome statistics. The other three referred to miscarriage, stillbirth, and other pregnancy complications (diabetes, hypertension, etc.).
 
The data I showed also spoke of other genetic changes. Down's is just one of the effects.

Add to that, the ill effects on the woman, which do not occur with first cousin pregnancies.

Again, why are first cousin pregnancies so bad, but old mothers are not?

Again, can we see evidence of this over-representation of genetic birth defects with European royalty due to inbreeding?

Again, can we also know the names of which states in the US the discussion is about?

I spot.
 
The data I showed also spoke of other genetic changes. Down's is just one of the effects.

Add to that, the ill effects on the woman, which do not occur with first cousin pregnancies.

Again, why are first cousin pregnancies so bad, but old mothers are not?
I'm not really sure I'm the person you want to talk to about that one, as I think both are a bad idea.

Again, can we see evidence of this over-representation of genetic birth defects with European royalty due to inbreeding?
Over-representation? Meh. Look up the Hapsburg dynasty. Or, you know, go take some history lessons.

Again, can we also know the names of which states in the US the discussion is about?
Ask the OP. But 31 states in the US have restrictions on first cousin marriages. 24 ban it outright, and 7 allow it only under very certain circumstances and often require things like signed statements of infertility or pledges to not become pregnant. I'm not about to go listing 31 states for you.

I spot too. If you don't care enough about the topic to do your own research, I'm not about to go doing it for you.

If you want some more interesting information to chew on, go look at the recent studies done in England about the birth defect rates of Pakistani immigrants who consistently marry their cousins. Something about how they account for 3.4% of all births, but over 30% of all birth defects. Hmm. How about that. And no, I am not going to link the study. I don't have access to it in online form.

I will state again that the biological problem with first cousin marriages that produce offspring is NOT just first generation birth defects, but instead the effect that propagating recessive traits has on the overall population.
 
How about presenting evidence, instead of telling people to find it themselves?
 
I love the implication that marriage equals babies. It's as if some can't get out of the child rhyme "First comes love, then comes marriage, then comes the baby in the baby carriage" mindset.

Not so.

But - if it isn't marriage as such but the risk of having children with genetic deficiencies that is the reason behind people wanting to ban first cousin marriages, let's take a look at the biological risks when women have the option to have babies at a much more advanced age (that was eloquent, wasn't it?), due to the marvels of science.

However, it comes with risks.





Ouch. Man, does it come with risks. Risks that far outweighs any risk that first cousin marriages have.

It's pretty obvious what comes next.

If people want to ban first cousin marriages because of the genetic aspect, they should also also want to ban women of an advanced age from having children.

Let's not assume. Let's ask.

Do those who argue that first cousin marriages should be banned due to the genetic risks that the - apparently inevitable - children face, also support that women above a certain age should be banned from having children?

Do I see any hands?


These are all great arguments, but of course, they don't work. Because they are based on a false premise - that opponents against cousins marrying _really_ are basing it on the risk of birth defects (not that you are suggesting it).

No, the whole "birth defects" crap right now is a post-hoc rationalization to support their belief that cousins shouldn't be married.

It is the same crap that goes on with gay marriage. I love the arguments against gay marriage (or even adoption) that "studies show kids are best off with a mother and a father." Yet, for some reason, no one ever uses this as a reason to outlaw single parentage! Moreover, no-one ever talks about the question of two same-sex parents living in the same household vs separated parents with or without joint custody. Of course, that is because it's not about what's best for kids. That is just made up for a rationalization of the bigotry in the first place.

If anyone really cared about "protecting the sanctity of marriage" they would work to outlaw celebrity marriages. Has any gay person done more damage to the institution of marriage than Brittany Spears and her New Year's eve marriage that lasted 1 day? And I haven't seen the constitutional amendments preventing marriage by lying, cheating whores like the ones who married my brother.
 
How about presenting evidence, instead of telling people to find it themselves?

I'm not the one claiming that the status quo should be changed. Those claiming that the status quo should be changed (i.e. the OP) should be providing evidence to support that view. So far, I haven't seen much except for misrepresented statistics that don't even address the real risk.

And I see my questions about the role of abuse in incestuous relationships have been completely ignored as well.
 
I'm not the one claiming that the status quo should be changed.

Whose status quo? Apparently 31 states of the US constitute the status quo of the world?

Kind of like circumcision, doesn't the fact that the US is more-or-less alone in promulgating it indicate that it is basically a cultural phenomenon, without a real objective justification?
 
I'm not the one claiming that the status quo should be changed. Those claiming that the status quo should be changed (i.e. the OP) should be providing evidence to support that view. So far, I haven't seen much except for misrepresented statistics that don't even address the real risk.

Isn't this just argumentum ad populum?
 
Against science? Oh no, I'm quite for science. It's just that while science supports what you've said, it says quite a bit more that has been ignored -- i.e. that the risk of inbreeding is not just the risk of birth defects in first generation children of that union, but is as well the risk of increasing the rate of birth defects for the entire population.
Please see
Livingstone, Frank B. 1969 "Genetics, Ecology, and the Origins of Incest and Exogamy" in Current Anthropology 10:45-62
and
Thornhill, Nancy, ed. 1993 The Natural History of Inbreeding and Outbreeding. Chicago: University of Chicago Press

1969?

1993?

If inbreeding were so nepharious, no animals could possibly have developed! Really, and that goes for every species that ever lived. Or Adam and Eve, for the religiously inclined. We all have it in our pasts, when population was much smaller, or much much smaller. And yet here we are.

I hate to quote myself, but I'll do it, because I've already addressed all those issues. Maybe not to your liking, but at least you could have acknowledged those earlier posts and tried to refute them.

But I doubt that people will get all excited to get married to their cousins enough to make any difference in the genetic pool, which is even more true in developed and diverse societies. The taboo will be lifted and some people will go down that path, but how is this kind of inbreeding any more harmful than, say, religious cults that isolate themselves purposefully, or close-knit far-away community with a small pool of people?

For example, I know of some gypsy communities that choose to get married between themselves, a group of about 500.There's no law to prevent that and I don't think there should be. Micromanagement of people's lives is not the role of governments.

One very important aspect is that we're talking about a developed society where arranged marriages are not the norm. In that case, your scenario becomes more far-fetched, because we're talking about cousins who fall in love to each other, not cousins forced to marry because their families want them to.

It might become more common, once the taboo is removed, but how prevalent it will ever be?

Nowadays, people have a much wider pool of prospective spouses. People meet over the internet from far away places, they move from town to town after jobs, they travel abroad frequently for business or leisure, they're less prejudiced regarding races and nationalities (in most western countries, at least), age is less relevant, etc. They're rarely tied to a land. They can get maried to people of other religious. So I really don't see how and why people would be so particularly enthusiastic about getting married to a cousin.

And I also mentioned something about how more rigorous screenings of fetuses, available now (that were not available in the 1990s, or in 1969), can hinder the putative negative effects of breeding between first cousins.

for reference on my statements. Unfortunately I have been unable to find either online, and while I'm sure there are similar articles available online, I really couldn't be bothered to look for them.

A lot more you haven't bothered to look up, like, say, this very thread.

Alright, since I seem to have misunderstood what your response meant:
http://writ.news.findlaw.com/grossman/20020408.html
I won't go quoting bible verses at you, since I'm not religious in the least and would rather not spout anything of the sort anywhere. The only purpose of even mentioning the RCC was to support the "social and cultural taboo" side of the argument.

There's unbridled incest in the Bible, didn't you know that? Father and virgin daughters.

Many Catholic countries do not have laws against first cousin marriages. Brazil and Italy come to mind (you can't get more Catholic than that). So, no, not a taboo here. Nothing to justify why 19 states in the US prohibit it.

I apologize for my statement about the Netherlands -- I read a quote which said it was no longer prosecuted there and thought that meant that it was still technically illegal, just not enforced. I cannot find the law itself, as I don't speak the language
.

Another fact you got wrong. No prob, we're getting used to it by now.

You know, I'm honestly confused here. I'm not used to people throwing around words like "discrimination" "prejudice" "irrational" and "unjust" without there being some sort of vested interest. In fact, one of the reasons I ended up posting in this thread was because of that confusion. Afterall, it's not as if you posted "hey, I read this article, can someone explain the history and reasoning involved in these laws" -- instead there was an initial outcry about how wrong it was.

WOW. What a petty and small world you live in. Where I'm from, people can have disinterested debate for intellectual pleasure. They challenge their ways of thinking, they pose questions for the sake of it, they try to conjure up scenarios and dilemmas and new approaches to old and new situations. So everybody who ever discussed bestiality had to have some involvement with it? I can't be interested in the Holocaust, in astrology, in Russian history unles there is some personal interested involved?

Btw, the words "discrimination" "prejudice" "irrational" and "unjust" sound like an "outcry"? "Venomous", like you used before? You haven't seen venomous in this world, I'm sure.

In the article mentioned in the OP there's:

"The laws against cousin marriage are archaic, outdated and counterproductive," said Ottenheimer.

Are they venomous too? Are you horrified by these guy's words?

It's not that the question is directed to Americans. It's the accusation that Americans are doing something wrong by not repealing these laws (which have been around quite a long time, by the way), without giving any solid reason other than "well other countries don't have laws against this."

Is that some kind of oversensitiveness because a non-American made those questionings?

Other Americans were unfailingly polite when trying to explain the matter to me, to the best of their abilities. They did not seem offended. People can recognize an honest question when they see it.
 
I'm not the one claiming that the status quo should be changed. Those claiming that the status quo should be changed (i.e. the OP) should be providing evidence to support that view. So far, I haven't seen much except for misrepresented statistics that don't even address the real risk.

"status quo" - no, the US is in a minority in this view within developed countries. So it's quite the contrary, prohibition of first cousin marriages is against the tide.

"misrepresented statistics" - no, the numbers are provided the a study by the National Society of Genetic Counselors, according to the article linked in the OP (did you even read it?).

"real risk" - no, the real risks have been assessed by top geneticists, and unless you have studied the research in depth, and you have the knowledge necessary to interpret that, you'll excuse me if I choose to trust the legitimate authorities on the matter and base on that evidence to support my view. Unless, of course, to you the "real risk" is some narrow definition you have decided by yourself, and then I can't help you with that.

And I see my questions about the role of abuse in incestuous relationships have been completely ignored as well.

Many marriages are based on uneven power relations. People get married to people who have had a violent past, who have history of psychiatrical troubles, who have highly undesirable genes (such as degenerative diseases) and the law does not have a say on that. Should those marriages be prohibited too?
 
Kind of like circumcision, doesn't the fact that the US is more-or-less alone in promulgating it indicate that it is basically a cultural phenomenon, without a real objective justification?

That's the kind of answer I can live with. Cultural phenomena without objective justification are common and exist everywhere. They generally appear for some justifiable reason by the time of their making, become a tradition, no one bothers to change them, and they remain like that until someone somewhere starts to investigate the reasons behind them, finds them hopelessly flawed, and then work for their change.
 
why are first cousin pregnancies so bad, but old mothers are not?
Cumulativity. The latter problems don't keep building up generation after generation. We already know that the former do because of isolated human populations in which inbreeding was allowed or unavoidable and the birth defect rate shot up. In some cases, such as the Amish, genetecists have even set up offices in the local clinics just to study exactly those defects/diseases precisely because there's such a dense concentration of them nearby. To use the Amish again, the abundance of people with genetic defects among them has become severe enough caused them to adapt their philosophy to it in at least two ways. One was that they have now adopted a religious explanation for, and religious prescription for dealing with, the defects: that the children who have them are there to teach others the true meaning of love. The other is that even subsets of the Amish that don't use electricity for anything else have had to accept the use of electricity for treatments such as UV therapy. They wouldn't be reacting that way to something that wasn't happening as you claim it can't be.

Have you heard of the book "Beyond the Last Village" by Alan Rabinowitz? He's an anthropologist who found a tribe called the Tarron that had, due to certain disadvantages of theirs compared to other tribes around them, dwindled to the point at which they started suffering the effects of inbreeding. Eventually more of their children were born "no good", as they put it, than were born without serious defects. When Rabinowitz found them, most of the adults were "obviously retarded" among other things, and there were no children because the tribe had decided to quit having any. They chose extinction rather than to continue having the kind of babies that theirs almost always turned out to be. One man aroudn 40 years old whom Rabinowitz met there, named Dawi, would be the last non-defective Tarron ever.

Also, consider the fact that inbreeding is something that other species without our cultures, or even brains in some cases, have still evolved specialized mechanisms to avoid.
 
If anything, the status quo on first cousin marriages is that they are, and should be, allowed. So, if the onus is on the one who wants to change the status quo, let's see the scientific evidence that first cousin marriages should be banned.

  • Why are first cousin pregnancies so bad, but old mothers are not?
  • Can we see evidence of this over-representation of genetic birth defects with European royalty due to inbreeding?
  • Can we also know the names of which states in the US the discussion is about?
  • Can we also see the recent studies done in England about the birth defect rates of Pakistani immigrants who consistently marry their cousins?

YALL. Yet Another Larsen List.
 
If inbreeding were so nepharious, no animals could possibly have developed - especially on small islands, like the Galapagos.

Yet, they did. In fact, that's where it (finally) hit Darwin that species develop. That's where he found pretty darn convincing evidence of evolution - even on a small scale, in a confined environment.

Remember: Cumulative genetic changes is not automatically a bad thing. Mutants are not monsters.
 

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