Qatar was the last Persian Gulf nation to institute mandatory screening in 2009, mainly to warn related couples who are planning marriage about any genetic risks they may face. The current rate of cousin marriage there is 54%, an increase of 12–18% over the previous generation. A report by the Dubai-based Centre for Arab Genomic Studies in September 2009 found that Arabs have one of the world’s highest rates of genetic disorders, nearly two-thirds of which are linked to consanguinity.

A 2009 study found that many Arab countries display some of the highest rates of consanguineous marriages in the world, and that first cousin marriages which may reach 25–30% of all marriages. In Qatar, Yemen, and UAE, consanguinity rates are increasing in the current generation. Research among Arabs and worldwide has indicated that consanguinity could have an effect on some reproductive health parameters such as postnatal mortality and rates of congenital malformations. Your second cousins are the children of your parents’ first cousins.


They are “once removed” because you are separated by 1 or more generations. The cousin label (first cousin, second cousin, etc.) changes depending on which grandparent the cousins share. People often assume that because you are first cousins you must love each other. Sometimes people who are only distantly related love each other and want to get married. If this is something you think you might be interested in then talk with your cousin about it.

What Are First and Second Cousins? Explaining Family Trees

These developments led to 13 states and territories passing cousin marriage prohibitions by the 1880s. Though contemporaneous, the eugenics movement did not play much of a direct role in the bans. George Louis Arner in 1908 considered the ban a clumsy and ineffective method of eugenics, which he thought would eventually be replaced by more refined techniques. Since that time, Kentucky and Texas have banned first-cousin marriage, and since 1985 Maine has mandated genetic counseling for marrying cousins to minimize the risk of any serious health defects for their children.

Then find each relative’s relationship to that ancestor on the sides of the chart. Where the row and column meet, you’ll find their relationship. But as points out, unlike with other relationships, if things don’t work out, you’ll still be cousins for the rest of your life. What are the pros and cons of dating your 1st cousin? To make a long story short, my cousin and I became close friends, then fell in love with each other. We have that “don’t care” attitude on what others say or think about our relationship, but are curious anyway.

It all came to a head when her new boyfriend and some of his jumped me. We were long since over and I told her to leave my friends and me alone. It’s when “two siblings reproduce with another set of siblings”… their children are all double first cousins. All I know is that I thought cousin marriages could make for an interesting list topic, I started digging around, and that brought us to now.

Based on the data I’ve seen, there shouldn’t be issues with 2nd cousins or beyond, but I’d be happy to change my mind if it turns out that data isn’t correct. I don’t see any reason to be grossed out or to be stigmatizing anyone based on this stuff. Some people have more, but this is about right for most.

In Texas, the only relations with permission to marry are first cousins once-removed. First cousins, half-cousins and cousins through adoption are not allowed to marry. First cousins in Texas are also not allowed to live together, nor can they have sexual relations.

One sister weds a man who has a twin brother who just so happens to be marrying the sister’s sister. The number of generations we would have to go back to connect to an extra layer of cousins would be five. Shared ancestors that would lead to third cousins have the same great-great-grandparents. So, a third cousin would be distant but still from the same generation as you. Rich man may marry my child dating my second cousins does the.

In the Catholic Church, unknowingly marrying a closely consanguineous blood relative was grounds for a declaration of nullity. Roman civil law prohibited marriages within four degrees of consanguinity. This was calculated by counting up from one prospective partner to the common ancestor, then down to the other prospective partner.

Ultimately, marrying your first cousin carries some risk. But the odds of healthy offspring dramatically improve with each new distance of relation. Second cousins share only 6.25 percent of their genes and third cousins share just over 3 percent. Seventh cousins—the average distance between modern American spouses—have no meaningful genetic relation at all.