However, first cousin marriage is far more common, and far less dangerous, than many of us have been led to believe, as you’ll soon see.
Further, if you include second cousins in the mix, according to the , the increased risks with regards to having children are nearly non-existent in this case compared with non-cousin marriage.
A cousin is a relative with whom a person shares one or more common ancestors.
But there's a simple way to figure out the relationships between relations.Or, put another way, your great-grandparents were siblings. Assuming you’re between twenty and thirty years old, the common ancestor between you and your date was born sometime after the Civil War but before the turn of the 20th century. According to this article, you might have more genetic material in common with people whom you form relationships than those you are born into: After analyzing almost 1.5 million markers of gene variations, the researchers found that pairs of friends had the same level of genetic relation as people did with a fourth cousin, or a great-great-great grandfather, which translates to about 1 percent of the human genome.Or, to make it blunt, you and your date have a great-great-grandparent in common. And while time itself does not dilute the gene-pool, basic mating does. So all those best-friends-turned-lovers relationships just got weird. If you and a close relative had both decided not to have children, society would not smile on your union just because it won’t produce an X-child.You and your third-cousin-lover share less than 1 percentage of your DNA. Humans have evolved to be unattracted to people with whom we are closely reared.Growing up with someone as a relative, especially in close proximity, shuts off the boner part of your brain for them.
Sorry, George Michael, but you’ll notice I said “distant” cousin.