Do Children of Bro-Sis Incest Really Have Issues?

[FantasySharer]

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[Hans101]

Inbreeding increases homozygosity, which is a fancy way of saying that an allele (gene) inherited from one's father is the same as from one's mother.

For alleles that are coded for normal function, this doesn't matter. For alleles that are defective, this matters very much. There are innumerable genetic diseases and conditions which will only manifest if both genes are defective. These are also known as recessive traits.

When a brother and sister have kids together, the odds that similar sets of recessive genes will be passed down from both parents are greatly increased. This is why children born from incest often have bizarre medical conditions that are almost never seen otherwise, as well as peculiar physical traits that are otherwise unheard of.

If you'll notice, I've pointed out that inbreeding increases the risks of this happening. Inbreeding does not guarantee that a child born from it will be defective in some way, it merely makes that outcome much more likely.

The genetic defects that inbreeding creates are the reason why human beings have evolved to instinctively avoid inbreeding. The various laws against consensual adult incest come from this instinctive aversion. Various other species have also evolved unique strategies to avoid inbreeding.

Now some people will tell you that the increased risk is small, and will cite research showing that the risk to 1st cousins is only slightly elevated. But then 1st cousins and siblings are not the same. The more closely two people are related, the greater the risk to their children. 1st cousins have 12.5% of their genes in common. Siblings share 50%. Do the math.

Even so, the UK has seen a dramatic increase in the number of children born with birth defects in recent years. The increase is entirely among Asian immigrants and asylum seekers who tend to marry their cousins.

 

[FantasySharer]

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[hilton1958]

Have to agree, while consensual sex between siblings can be erotic and fun, having children is definitely not a good idea.

 

[simplegirl]

Wasn't Toulouse-Lautrec caused by this? I do believe it was common in past eras that first cousins marry making certain genetic conditions more common than the norm.

 

[CindyCD478]

Many years ago while living in another state we met a brother/sister couple who had two children. Both grew up to be fine, outstanding well educated adults. Not saying problems can't occur but sometimes there is no problem.

 

[Queenofincest]

My brothers were coked up and they raped me

They came home while I was naked an straight away J got his nob out and pushed me down, J was like a animal before I could get up I was smothered... We still get on well just joke but can't deny it, it was fun.
Hello by the way I'm new, damaged sexualy but not crazy.....

 

[Kitty]

Do Children of Bro-Sis Incest Really Have Issues?

Yes.

And what does "completely normal and healthy" mean, exactly?

 

[Debbie920]

maybe the probablilty of problems with health is increased but there will be examples of.no problems in the world to show it can work.

if i was in love with a brother and we ran away to be together i think the urge to want a family would be still in my heart.

 

[DeleriousDan]

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[DeleriousDan]

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[FantasySharer]

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[Hans101]

Genetic testing can find common problems, such as cystic fibrosis or Tay Sachs.

There are no tests for the myriad of rare heterozygous mutations that all of us carry within us.

 

[Harold_Hill]

Birth defects can be caused by so many things from industrial toxins in the environment, to genetic anomalies. I'm not sure how you would tell if a birth defect was caused by incest, or by some industrial pollutant, or by some genetic anomaly. As far as I know, there has never been a comprehensive study on birth defects and incest. Considering children of incest are so taboo, I'm not sure how you would go about making such a study, since such parents rarely, if ever, admit their children are the product of incest. I think it would be very difficult to study something that people don't admit exists.

 

[JagFarlane]

Birth defects can be caused by so many things from industrial toxins in the environment, to genetic anomalies. I'm not sure how you would tell if a birth defect was caused by incest, or by some industrial pollutant, or by some genetic anomaly. As far as I know, there has never been a comprehensive study on birth defects and incest. Considering children of incest are so taboo, I'm not sure how you would go about making such a study, since such parents rarely, if ever, admit their children are the product of incest. I think it would be very difficult to study something that people don't admit exists.

It has been done, just not on humans but instead done on studies of livestock. Inbreeding has been a used practice to try and bring out desired traits, particularly in cattle. It's also been used to determine if a bull was a carrier, they would mate the bull to his daughters as you have an increased chance of drawing out the defect, though that's now been replaced with genetic testing.
In the Black Angus this came back to really bite farmers in the ass, particularly in Australia where inbreeding was more popular. Several birth defects came to light, like waterhead.
You can tell if an anomaly is due to inbreeding or environment by how it's repeated. If the offspring of a known carrier display the defect in different environments, it's generally genetic. There, of course, is also genetic testing.

 

[Harold_Hill]

It has been done, just not on humans but instead done on studies of livestock. Inbreeding has been a used practice to try and bring out desired traits, particularly in cattle. It's also been used to determine if a bull was a carrier, they would mate the bull to his daughters as you have an increased chance of drawing out the defect, though that's now been replaced with genetic testing.
In the Black Angus this came back to really bite farmers in the ass, particularly in Australia where inbreeding was more popular. Several birth defects came to light, like waterhead.
You can tell if an anomaly is due to inbreeding or environment by how it's repeated. If the offspring of a known carrier display the defect in different environments, it's generally genetic. There, of course, is also genetic testing.

Most of the comments you see are about defective or undesirable genes being passed down, but wouldn't there be an equal chance of healthy or desirable genes being passed on through incest? I know, (as you pointed out), with inbreeding cattle, sometimes undesirable traits do come out, but more often, inbreeding creates bigger, more desirable animals. If in the case of human siblings, neither had recessive genes, wouldn't their offspring also be more healthy? Perhaps if a brother and sister wanted to have a child, they could have themselves checked for defective genes, and if there were no health risks genetically, could produce a healthier offspring. Just a thought.

 

[DeleriousDan]

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[DeleriousDan]

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[Hans101]

Numerous studies on the affects of inbreeding in humans have been done over several decades in multiple countries. Since most are published in various academic journals, they are not easily found through google.

News stories, on the other hand, are:

http://www.independent.co.uk/news/world/australasia/australia-incest-case-filthy-and-severely-deformed-children-found-in-remote-farming-community-after-generations-of-inbreeding-8998115.html

Many of the children were suffering from severe health problems brought on by inbreeding, with a number diagnosed with homozygosity deformations – mutations caused by inheriting identical genes from both parents.

Hardly any were capable of intelligible speech, many were deaf and/or blind, and those that could understand what investigators were saying were painfully shy due to spending their entire lives without communicating with anyone other their immediate family members.

 

[Harold_Hill]

Numerous studies on the affects of inbreeding in humans have been done over several decades in multiple countries. Since most are published in various academic journals, they are not easily found through google.

News stories, on the other hand, are:

http://www.independent.co.uk/news/world/australasia/australia-incest-case-filthy-and-severely-deformed-children-found-in-remote-farming-community-after-generations-of-inbreeding-8998115.html

No offense, but when the question is asked about comprehensive studies of children of incestuous parents, I keep seeing the same answer. "Studies done in other countries and published in various journals", but never a direct link to any of these studies. If these are real studies, then why are they kept so secret? You think the results would be of benefit to everyone. I read the entire article from the link you posted, and I don't see any real evidence these retarded children found in Australia are the direct result of the inbreeding. According to the article, these children are the descendants of their great grandparents who are brother and sister. For all we know, both of these great grandparents may have been severely retarded themselves, and would have produced retarded offspring regardless of with whom they mated. The genes that cause retardation are often passed on regardless of whether the parents are related or not. Also in the case of these children in Australia, we can't know if the severity of the retardation is the result of social and parental neglect/abuse, or solely the result of inbreeding. Too often people cite vague articles like this to prove their own moral judgment without any real scientific study of the circumstances that led to the end result.

 

[HussarVanburen]

Don't fuck your sister.

 

[CindyCD478]

Don't fuck your sister.

Or fuck her but just don't get her pregnant. Thats what we tell our son and daughter.

 

[DeleriousDan]

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[elizabeth15]

The studies aren't secret. They're published in academic journals, which aren't typically available outside of academia due to their high cost. If you're affiliated with a university, you can access these studies to your heart's content.

 

[bi_sub_lady_doc]

The offsprings of a consanguineous relation ( either sibling or first cousins ) are much more vulnerable to autosomal recessive diseases ( e.g thalassemia or albinism ) which are not usually expressed ( but may be a carrier ) in individuals who have parents from two separate lineage.This occurs due to presence of two diseased alleles or due to absence of healthy dominant gene..
social stigma is another concern..