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Why you shouldn't have sex with siblings

Updated on July 13, 2009

Sex is a beautiful thing. It allows people to join together and show their love for each other. It's a great thing. Its also a bad thing because some people use sex to supply their lustful needs and think its cool or funny. It can cause them to contract diseases and ultimately kill them. Then there's the ugly. Having sex with relatives is the ugly part of sex. I was watching Harold and Kumar not too long ago and I seen the cyclops child and it startled me. It was funny but scary. I thought I would write this hub because I found it to be very funny.

The following picture depicted to the right shows the being that was on Harold and Kumar. This is the fictional horrors and humors of sibling sex.

The Real Scientific Evidence

Real scientific evidence shows that child birth between siblings are most likely to have some form of deformaty. Not saying that the child is going to become a cyclops, but there will be some form of deformation with the child.

Science shows that people who have a sexual relationship are only 2-3% more likely to pass on diseases to their children at birth than those who are unrelated. Although that is relatively low, the odds are still higher and its a lot stranger than just going and finding a nice soulmate that has no relations to you or your family. The risk of passing on some form of disease or giving birth to a deformed child are very high with brother and sister. The percentage of this is currently unknown, but it is said to be multiple times more likely than first cousins.Two siblings having kids together are likely to pass on a recessive disease to their kids.

We all have two copies of most of our genes- one from mom and one from dad. These genes can come in different versions (also called alleles). Both genes need to be of the same version for it to have an effect. Copies of genes that don't work well or at all can cause recessive diseases.

Two siblings have a 1/4 chance of having the same copy of a gene as each other. Two siblings are 50% related to each other.


Loving someone can't be judged or predetermined. Love is an unexpecting thing that can never be planned or saw before happening. It can be with any individual. Attraction can be with anyone, including family members. Some people fall for their family members and unfortunately its not accepted into the way of life of most, so it would be a very strange thing to pursue.

People make laws on sibling sex because of the science shown that shows that siblings are most likely, more than anyone in the world, to have a child together with some form of recessive disease or some form of mutation.

Incest and Bastard Curse

I know it sounds stupid, but some people honestly believe this. They believe that if anyone in your immediate family or immediate family history have been born as a bastard or as a result of incest, you are cursed. It says that people who commit incest and the children that are a result of incest are against God and have no support in his cause or those that believe in God and his cause. Even though the people who say that are just as bad for judging, they try to throw this point around as if there is some form of evidence to prove that.


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    • Lor's Stories profile image

      Lor's Stories 4 years ago from Central New Jersey

      Genetics. Spreading rare diseases that otherwise will not show up in a

      Large community.

      The Amish show a rise in Muscular Dystrophy because maybe 2nd cousins marry.

      Spreading your genetic material is healthy. Keeping it within a clan or community can be deadly.?

    • profile image

      Jovita 7 years ago

      Hi guys ! I'm involved with a secretive person who seems more and more unnatural as the months go by.



      How can you tell whether siblings BROTHER AND SISTER

      are "deeply" involved in an incest relation?

      If they're both singles in their 50's,

      Fly over to meet eachother every month,

      and during these trips they're both unavailable most of the time,

      If the guy sets his sister's voice in his answering machine, although they live 1000 miles apart...

      If the sister is dating an elderly gay person,

      and the brother seldom dates the same woman twice cause he's bored of women ...

      If they spend holidays together,

      and when his sister is around, the guy just hangs up the phone on his current girlfriend....

      If he has frequent business and hobby trips, but inconsistencies occur, like

      * he forgets how many days he was away,

      * last minute, he reschedules his flights


      Please help !

    • ChristineSheridan profile image

      ChristineSheridan 8 years ago from Cleveland Ohio USA

      Wow, this Hub title surprised me into reading it. Good title choice, for that reason. A primary point against incest for Christians is that the Bible speaks against it. The Bible defines incest as sex with father, mother, aunt, uncle, brother, sister. Cousins are not an incestuous relationship to God, but our society does raise an eyebrow at it. It's a little close for my comfort, too, jim10!

    • jim10 profile image

      jim10 8 years ago from ma

      I went to a wedding a few years back with my wife. We ended up sitting with someone my wife kinda new many years before. She introduced us to her cousin who was her date. We figured she just couldn't find anyone else. Well as the night went on they mentioned living together and kissed a few times and held each others hand. As soon as we were alone we asked each other if we heard them wrong. Nope we both remembered them saying cousins. It was awkward. But, brother and sister would be way more than awkward.

    • GreenGardenGuy profile image

      GreenGardenGuy 8 years ago from Fort Myers, FL

      Touchy subject. You handled it pretty good!

    • dohn121 profile image

      dohn121 8 years ago from Hudson Valley, New York

      Ugh...Inter-sibling sex is a no no. Great hub. I like that part that deals with bastard or cursed children. I didn't know that before reading this but it makes a lot of sense.