Quoting Virgin Mary ♥B:
My SIL and her husband are first cousins (not sure what extent of "incest" you want) and they have 3 boys and they are all 3 perfectly healthy
Theres a man in my town who was conceived by a father and daughter and his face is severely disfigured
JUST LOOKED THIS UP, SOUNDS LIKE IT MAKES SENSE TO ME BUT HEY, WHO KNOWS FOR SURE DOCTORS CAN BE FUCKIN LOONEY TOONS
There is no one condition or set of conditions likely to affect a child conceived through incest. Children with serious disorders can be born to unrelated mates and children conceived through incest can be perfectly healthy. Because relatives already share some genetic material, there is a greater risk that incest will result in a child who has a rare genetic disorder carried as a recessive trait. Recessive traits may cause no symptoms at all in those that carry the genes, but when combined can result in seriously affected offspring. The closer the relationship of people in an incestuous relationship, the greater the risk that they both carry the same recessive genes; however, it is also possible that neither person is carrying any harmful genes in which case the child produced has no greater risk of disease or malformation than any other child.
Some congenital malformations are not the result of genetic diseases carried by the parents but rather result from a complex variety of causes which could include virus infections, genetic mutations, exposure to toxins, abnormal division of cells, age of parents, and physical causes. None of these would be affected by incest.
My husband worked in an MRDD home and took care of three brothers who were severely mentally handicapped and were mutes.. He ended up finding out their parents were first cousins
It sometimes depends on how closely the people are related. Brother and sister would be worse than a woman and her 3rd cousin... (I mean possible defect-wise.)
Just because the the mother and father are blood relatives does not necessarily mean that the child will have any kind of birth deformities. Problems occur when birth defects run in the family so genetically they are more likely to happen to the child. The chances go up because both parents might be a carrier. But if the family history is clear of any genetic deformities then the child will come out just as normal as any other.
Interesting fact- a study was done on first cousins who married and it was found that they had much lower miscarriage rates than the average married couple. It was determined that this was because their body chemistry was similar and more compatible. I don't know how accurate this was I just thought it was interesting.
My source is a paper I wrote in college on why it is okay to marry your first cousin. I was assigned the topic. My teacher had a sick sense of humor :)
Ok, for anyone who is curious to know.... We just found out this week that back in 1955 my Grandmother had a baby and gave it up for adoption. The name she used on the adoption papers just so happens to be her married last name, though they weren't married at the time. Sometime in the 70's or so, my Grandmother married her first cousin, and since she used THAT last name on the adoption and birth certificate, we are assuming that this "child" is a product of their incestuous relationship. Since the child was born with "bony displasia" I was wondering if that could have been caused by the incest.
I study anthropology and there are some cultures where incest isn't considered "taboo". However, there are more likely to be genetic defects. Ever see a cat with an extra toe? that is a case of genes being too similar and not compatible, otherwise known as incest. We learned about a few women in India who were products of incest who were born with 6 fingers on each hand instead of 5, and the rate of down syndrome and chromosomeabnormalities are higher.
I do know that if there are any genetic disorders in the family its more likely to happen if incest. Like say club feet run in the family, an incest couple would have a higher chance of having a club foot than if they had a baby with a non family member..did that make any sense?
I just know that with incest between closer family members (brothers/sisters, parents/children, cousin/cousin) that there is a HIGH chance for mental disabilities such as down syndrome and retardation.
Thanks everyone! And just because I forgot, my Grandmother did end up marrying her High School Sweet heart and having 4 children with him. LOL