Why do so many Muslims marry their cousins?

0:00Why do so many Muslims marry their cousin? I have to admit that despite being to the Mideast a few times, I really had no idea about this until I recently read a statistic that said 55% of British Pakistanis marry their first cousins. As a westerner, it's a baffling concept that at first I didn't believe. But when I researched it, I found out that hundreds of millions of people, mostly in Muslim countries, are married to their cousin. In a number of countries, it's the majority of all marriages. So this is what I do here at Elephants in Rooms. Take a question that makes some people raise their eyebrows, research it, and give you a straightforward and fair answer. And it's never about Nyan, Nyan, Nyan because the people on this planet are fascinating animals. Here, we'll first look at the global picture. Where is it legal or banned or popular? Then we'll answer the question, why not marry your cousin? Looking at stigma and health reasons. I flip it around and then get into the question of why people do it with a focus on Pakistan and then talk about what caused the split of Islam versus the world

1:03because there's a clear correlation with some twists. And finally, we'll take a quick look at how it really reshaped societies. Okay, so first of all, from a legal perspective, most countries don't ban marrying your cousin outright. The blue areas on this chart show that. So China does, South Korea and the Philippines, some countries in the Balkans and a few others. The United States, it has a patchwork of laws. Legal in 18 states restricted in a handful and banned in the rest. Actually, eight states criminalize marrying your first cousin instead of just denying a marriage license. And that's something that I couldn't find in any other country in the world. But even in states and non-Muslim countries where it's fully legal, it's exceedingly rare in practice. In the United States, they estimate about two out of a thousand marriages are among first cousins. It's very rare in Europe, Asia, South America, and really any country without a large Muslim presence with the exception of a few pockets in Hindu South India, which sees rates over 25%. So where is it popular? On a map, it's easy to see what they call the cousin marriage belt.

2:06It runs from Morocco through Pakistan, a nearly perfect overlap with Muslim majority countries. Pakistan leads the bunch. About two-thirds of marriages are between blood relatives, usually first cousins. Across the Middle East and North Africa, 20 to 50% of all marriages involve cousins. The overall numbers are hard to pin down precisely, but there are at least a half billion people married to their first cousin. Close to a billion when you include second cousins as well. But it's important to note that there's not a uniformity here with some Muslim countries having substantially lower rates. Bangladesh is 90% Muslim, but cousin marriage rates sets out around 17%. Indonesia has the world's largest Muslim population, and their cousin marriage rates are about the same. Turkey, about 25% in falling. The rate of India's Muslims is 32%, which is many times higher than non-Muslim societies, but half the Pakistani rate, despite living right next door and sharing the same religion. You also see lower numbers among Muslims born in Western countries. For instance, British Pakistanis born in the UK

3:07see rates drop by over half when they grew up in that different culture. So, what's so bad about marrying your cousin? Let's take a look at the stigma and the health issues. But first, let's spend a moment on something that I think about constantly. How news gets reported. Now, I worked in newsrooms for two decades, and I watched it turn from kind of bias to you got to be kidding me. Today's sponsor, Ground News, is an antidote to that. They gather news coverage from over 50,000 sources and show you who's reporting on a story, how they're leaning, and just as critically who's not reporting it at all. You can see funding, ownership, bias ratings, the whole picture. You can check it out at ground.news slash elephants. The feature I rely on the most, they call it blind spot. It shows stories that are getting tons of coverage on one side of the political aisle and virtually none on the other. Here's a recent example. A convicted, repeat felon in Chicago was charged with assaulting a pregnant woman while he was out on the city's electronic monitoring program. 100% of the coverage of that story was on the right,

4:07with absolutely no left-leaning sources reporting it. On the other hand, a story about how British Prime Minister Starmor came out in support of Denmark while the Trump administration is talking about wanting to take over Greenland was mostly reported by left-leaning media. Just 17% of the coverage was on the right. This is the problem. If you're only consuming news from one side, you're not just missing context. You're sometimes missing entire stories. Ground news helps you break out of that bubble, and honestly, I check it out every day. I'm on the vantage plan. If you want to try it out, use my links in the description. Ground.news slash elephants, and you'll get 40% off. Or just scan the QR code on your screen. Also, supporting sponsors like this keeps this channel going. So thanks. Okay, so now back to the dating game. Let's talk about those cultures where it's not common and look at the question, why not marry your cousin? There are health issues to discuss, but in the West, marrying your cousin just feels wrong. It's a weaker version of the taboo against incest, but the gut reaction is immediate for most people,

5:08even if they can't quite articulate why. Part of it is familiarity. Cousins are family and family just isn't supposed to be romantic. Cousins show up at family reunions, Christmas dinners, backyard barbecues, potential partner and family. Those just don't overlap in most of the world. Western individualism also emphasizes the whole concept of building a life with someone you choose. That's the opposite of someone your family tree gave you. And then there's a class to mention too. Cousin marriage seems backwards and uneducated in Western cultures. The hillbilly or the inbreeding stereotypes, they have a real social stigma. The bottom line is that our culture has spent 1,500 years conditioning us to see marrying your cousin is wrong. So even without understanding the history or the science, we've internalized the taboo. It's written into our cultural DNA. But there are also real health reasons behind that instinct. Birth defects double in first cousin marriages, from roughly 2 to 3% to 4 to 6%. That means the vast majority of children are born healthy, but the ones who aren't,

6:08they're often severely damaged. And while single-generation cousin marriage carries a moderate risk when it repeats across generations the danger multiplies. If your parents were cousins and you marry your cousins, rare genetic diseases can jump 10 to 20 times higher than the general population. Recessive genes that might stay hidden for generations, they show themselves when the same limited gene pool keeps intermarrying. Informatality overall is higher, and there's a spike in conditions like congenital heart defects, neural tube defects, intellectual problems. The city of Bradford, England shows the effect in stark numbers. British Pakistani children comprise 3% of births overall, but 30% of children born with genetic disorders. Again, most families are fine, but a minority they can face devastating outcomes. So here's some context to think about, because it gives this whole issue a little bit more nuance. Smoking during pregnancy, that shows a considerably higher correlation with birth defects than marrying your first cousin. Alcohol use, that's even worse. Now, those things carry a social stigma in most parts of society,

7:12but government surveys in the United States show almost 5% of expecting mothers smoked during their pregnancy, and 14% reported drinking, with a third of those reporting binge drinking. Or you can look at children born to women over the age of 40. They face similar risks, but nobody's talking about banning that. So the health reasons against having children with your cousin are real, but the reaction against the practice it goes deeper than just health statistics. Okay, so now let's flip the question and look at the reasons why people do it. I mean, hundreds of millions of people don't marry their first cousin without rational reasons to do so. And what I discovered is that it's not really their religion leading them to it, but cultural factors that support their economic and social structures. And some of it offers advantages for brides and their husbands. I mentioned Pakistan's high rates, so let's focus on that as a case study. Its social structure is often described as intensive kinship. Families and extended clans make up the core of social life and support systems, especially in rural areas.

8:13Your relatives are your bankers, business partners, and safety net. Marrying within the family strengthens those ties. And at cousin marriage, it's not just seen as a union of two people. It's essentially a contract between two branches of the same family. Clan strength, that depends on size, cohesion, and concentrated wealth. Marry outside the clan, and you fragment those. You're not doing favors for your wife's relatives instead of building your own power base. Another thing, Pakistan is a heavily agrarian society. And for farmers, land is everything. And Pakistani inheritance law divides the land among all sons. A 10-acre farm split four ways might become four barely sustainable plots. But marry your cousin? Those plots recombine in the next generation and automatically solve that fragmentation problem. A bride's dowry price also runs about half the cost when you marry a cousin versus an outsider. And then the money stays in the extended family's pocket instead of going to strangers. All of this helps middle-class families stay that way. Wealthy families?

9:13They marry cousins to keep fortunes consolidated. For example, the Sharif family, Pakistan's political dynasty, they practice cousin marriage for generations, keeping their business and their political empire tightly controlled. And poor families? Some marry cousins because they literally can't afford the bride price for outsiders. So the system works at every economic level just for different reasons. There are also a number of advantages that families say they see in cousin marriages, especially for their daughters. One is that it keeps the family closer together geographically. A young woman isn't marrying someone far away where you might only see her on holidays. She stays nearby. Another is familiarity. The couple and families know each other and share similar values. The concept of we know the boy and his family because there are relatives, that's more comforting than bringing in a stranger where everything's unknown. There's also an implicit trust that a cousin might be less likely to mistreat his wife since he brings shame on the entire family and that the family could intervene if a problem arises. Now, that might have an element of truth to it,

10:15but when I try to look into the domestic violence data, I really couldn't find any real reason to believe that cousin marriage is overall protective. Because sometimes nearby can really mean trapped. And if disputes arise between the family, that doesn't necessarily mean that they prioritize a wife's safety, honor killings in Pakistan. They're a thing and they're most commonly committed by a woman's husband or her brother. It's hard, sometimes impossible, to really look at a discrete element of a society and say, how does that affect things overall? Another factor that perpetuates cousin marriage is extreme gender segregation. In rural areas, women are often kept separate from men outside their family altogether. In conservative households, women's entire social world is the family compound. They often can't leave the house unaccompanied. They don't attend mixed gender schools or work outside the home. Their entire social network consists of relatives. So for some young people, relatives are literally the only opposite sex people they've ever had a conversation with. You can't marry someone you've never met.

11:17And usually, parents control marriage decisions with a near total authority. The vast majority of Pakistani weddings, they're arranged by the family. Even love marriages are usually just family-approved choices between cousins who've developed affection over the years. A 2019 survey found that 82% of Pakistani women reported having no say in choosing their spouse. And the final major factor I'll mention is one that doesn't encourage cousin marriages per se, but it's a requirement for it to continue, a high fertility rate. You need lots of kids and you need lots of cousins. I mean, think about it. If you have four siblings who each have four kids, that's 16 first cousins for potential marriage partners. Compare that to countries with half the fertility rate of Pakistan. And the math works out to only two or three first cousins. Pakistan's population doubled from 1990 to 2020 so the cousin pool keeps expanding. But for countries where fertility rate drops, the whole system falls apart. There just aren't enough cousins to go around. That, along with other social changes,

12:19explains why cousin marriage rates dropped in countries like Bangladesh and Turkey, despite the same Islamic traditions. Turkey's fertility rate crashed from 4.5 children per woman in 1980 to 1.5 today. Bangladesh saw similar numbers. Aggressive campaigns there saw the rate of educated girls triple since 1990 and fertility rates dropped as they usually do when more women go to school. Economic development and urbanization also increased gender mixing and marriage markets beyond the family. The religion stayed the same, but the structures of their societies changed. Hey, this is a good time to mention. If I've made a real mistake here, yell at me in the comments. I'll address it in a pinned comment and the description box where you can also find my script and my sources. Okay, so let's look at Islam versus the world and answer the core question. Why is cousin marriage only common in one religion? The short answer? Islam didn't start the practice, but it didn't ban it either. Christianity did, and that choice reshaped much of the world.

13:20So marrying your cousin wasn't invented by any one culture or religion, and in the old days, it was everywhere. The Bible had Jacob marrying two of his cousins. Sarah was Abraham's half sister, and if you're a strict creationist, Adam and Eve's kids didn't have many options for populating the planet. In ancient Egypt, nobility routinely married cousins as a safer alternative to sibling marriage. Even pharaohs recognized sibling marriage carried visible dangers to the health of children, but pharaohs often did it anyway to preserve their bloodlines, but the commoners didn't. And cousin marriage became a respectable version of that. Pre-Islamic Arabia made cousin marriage standard practice for centuries before Muhammad. Greek and Roman families did it. Jewish communities did so under Mosaic law, then, in medieval times, the religion split, with Islam staying the same. The Quran explicitly permits cousin marriage when it lists who you can't marry, mothers, daughters, sisters, aunts, nieces. Cousins aren't mentioned, and in Islamic law, what's not forbidden is allowed.

14:21Essentially, silence equals permission. Muhammad himself took a cousin for one of his wives. And for 1400 years, every major school of Islamic law has approved it, Sunni and Shia alike. So when something is allowed in scripture and practiced by the prophet, it's protected from reform. Some contemporary Islamic scholars, they raise health concerns, but they can't call it Haram without contradicting clear religious text. But Christianity took a different path, and around 500 A.D., the Catholic Church started restricting it. Pope Gilesias initially banned marriages to third cousins, and over years, the rules kept tightening. 500 years later, it reached sixth cousins, people who share great, great, great, great, great grandparents, basically everyone in a medieval village. The church required a detailed genealogical investigation before any marriage, and you had to prove that you weren't related going back six generations. In a world where most people never traveled more than 20 miles from their home, that eliminated most potential spouses. As the Protestant Reformation came along,

15:21they didn't reverse this practice and the restrictions survived the split. So why did the church do it? St. Augustine argued in the fifth century that marrying outside king groups should bind social life more effectively. He noted cousin marriage wasn't forbidden by divine law, but that people shrank from it because it felt too close to incest. That natural human revulsion to incest, visible across every culture, extended in Christianity's thinking to cousins. Now, some historians, like Jack Goodey, argue a darker theory that the church was really motivated by money. Weakening lineages increased the odds that property would go to the church when families died without errors. Now, it's easy in life to always say, you're doing that for self-serving reasons, but it's hard to figure out the truth sometimes. In this instance, there's really little evidence to really believe that medieval clergy were cynical schemers. But the policy did bring political and economic changes. Breaking kinship structures, it weakened power bases that rival the church authority. And by 1200, the church owned over a quarter

16:24of Europe's land that could be cultivated, much of it through these inheritance patterns. Still, the church eventually rolled the prohibition back, which could argue against a pure land grab, and by the 1200s, it settled on first cousins. Victorian England still had some instances of it in the upper classes, but by the 1900s, the practice was generally under 1% in Western countries. So what about non-Christian non-Muslim countries? China's path on cousin marriage, it was a bit messy with different dynasties having different rules. The practice never had religious protection, though. So when the Communist Party banded in 1980, it was really just a public health decision. India is more complicated. It never passed a national band, but rate sharply declined in urban areas, where education, mobility, and falling birth rates, they did what laws didn't have to. The worldwide pattern, we see a combination of Western influence, modernization, and genetic awareness driving the decline. Christianity really led the way in medieval times, and most everyone else followed over the next 150 years.

17:25So Islam didn't change, Christianity, and the rest of the world did. And that split created two fundamentally different social structures that we see today. So whether the church meant to or not, the band changed how people lived. So let's take a look at how it reshaped societies. Primarily, it forced Europeans to build economic and social relationships outside of kinship networks. You couldn't keep a family business going for generations by marrying cousins. Instead, you had to create partnerships and contracts with non-relatives. That pushed the development of institutions, like guilds and corporations, and banks that would lend the strangers. Middle Eastern societies, they kept their family-based trust networks. European marriage patterns created smaller, nuclear families instead of large clients. So inheritance split across smaller family lines, not staying with the big extended families. Property had to be managed more actively. It couldn't just sit in a large family's hands for centuries. The social structures shifted from clan loyalty

18:26to individual achievement. And when you can't rely on a massive family network, you look outward. Professional associations, trade groups, political parties, built on ideas, not bloodlines. By the 1800s, Western Europe had evolved into different economic structures. Now, obviously there were a lot of factors, but it's a deeper structural difference than most people realize. To some extent, Western individualism might not be a cultural value we chose, but what happens when you can't marry your cousins for 1,000 years. Guys, I had a blast researching this video, and I hope I was able to help you learn about a topic that too many people only approached with pointy fingers. If you liked it, you also may like this other video I produced. It's why groups of people change their names, and not only change them, but then consider it a serious insult to use the last one. For instance, how did the term negro or colored people go from fine to, don't say that? It's a fascinating look at language, group dynamics, and politics that I think you might find interesting. Thanks for watching.

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