00:03:54.400If this is difficult for you to imagine, consider it this way.
00:03:57.860Are two people from a cousin marriage family more genetically similar to each other than two people from a family that doesn't have cousin marriages?
00:04:08.400And then you're like, oh, yeah, obviously they're more closely related to each other.
00:04:12.040Well, then the effects of a cousin marriage of those two people who are more related to each other than normal first cousins would be is significantly greater.
00:04:21.780Another way you can think of this is how many total ancestors do they have?
00:04:26.140when you get five generations down in a cousin marriage or something like that you're talking
00:04:32.080about i think about you'd have maybe 75 less total ancestors within your overall genetic subset
00:04:39.660than a person who's not from a cousin marriage family e.g total number of great great great
00:04:45.220grandparents oh yeah okay so yeah it's like one of those things where like you can do it once
00:04:49.980but like don't keep doing it um don't keep doing it now how bad is this it would typically take
00:04:58.580many generations typically 10 to 20 of cousin marriage for the average person so let's just
00:05:04.100talk about iq here to reach an iq that would technically qualify as a disability
00:05:09.220and that's what 60 60 or 70 below 70 so two standard deviations below the population norm
00:05:19.280of 100 okay so think of it this way the average person who is of a family practicing cousin
00:05:28.600marriages if they have done that for 10 to 20 generations the average human result of that
00:05:36.200will be and this isn't me getting into racism or x ethnic group is better than a y ethnic group
00:05:42.960i'm just talking about anybody does this if you and i did this the our average descendant in 10
00:05:49.060generations would be mentally disabled by modern statistical calculations okay well that's that
00:05:56.840you're just talking about mentally i mean there's probably a font of additional health conditions
00:06:03.860and that's when when i've heard mainstream progressive outlets cover this they're typically
00:06:08.900talking about that like all these weird like genetic conditions that come up that that make
00:06:12.880it you know these people are dying in their 20s like it's it's extremely sad and super not cool
00:06:17.700yeah yeah no no no and this is happening throughout royal families in the region that
00:06:22.620we're going to talk about this is happening throughout like it's really really a being
00:06:27.920giant issue right now globally speaking so we're going to get into that because what we will find
00:06:34.060out i guess i'll let the cat out of the bag is in most of these regions that we're going to focus on
00:06:38.960they've been practicing this for over 20 generations
00:06:42.620now keep in mind they occasionally don't hey they always pull it off sometimes you are not
00:06:49.740cousins and sometimes you're not into the cousins so you the problem being is yeah is that the
00:06:55.620types of people one is is that even when they're not marrying a first cousin it's often still a
00:07:00.700relative and two i mean keep in mind if 50 percent are first cousin marriages probably 25 percent or
00:07:06.540second or third cousin marriages and then if you're talking about the final 25 percent those
00:07:12.040are typically the ones that are more westernized in their value set and who have fewer children
00:07:17.660oh it's not like the ones so they're like exiting that gene pool so it doesn't yeah they're exiting0.97
00:07:24.840the gene pool yeah so if you hear something like 50 of pakistani immigrants in the uk are in first0.77
00:07:32.840cousin marriages it's not like the 50 of the ones who are in first cousin marriages when their kids
00:07:38.600get married, there is a 50% chance that they will be in a first cousin marriage. It's more like
00:07:43.920there's an 80 or 90% chance they'll be in a first cousin marriage because that is the tradition of
00:07:48.720their family, right? Like that's their cultural heritage, right? So it's, it's, you're seeing this
00:07:54.280within traditions much more heavily than you might expect. All right. So what are the effects
00:08:01.220if we're talking about something small, like five generations of doing this, it appears it would
00:08:05.640likely be around 10 to 20 IQ points this would bring somebody to like 80 or 90 average IQ this
00:08:13.320is assuming there isn't any other ethnically conflating data here which which for the purposes
00:08:17.740of argument here we're going to presume there isn't within 10 generations you're potentially
00:08:21.600getting 15 to 30 point drop this is where you get to the point where you could be mentally disabled
00:08:26.880if you're talking where the average person would be mentally disabled from these groups and if
00:08:31.400you're talking 15 to 20 generations it would be very likely for the average to fall well below 70
00:08:36.540so here you'd get the to the severely disabled range and this when people give you those scary
00:08:42.520statistics when they're like the average iq in gaza is x you don't even need to like presume a
00:08:51.160racist intentiation from that you you just have to say well what i mean is somebody could say oh0.74
00:08:58.840are you saying that people from that region are ethnically dumber than people from other regions0.96
00:09:04.060and the person could reply no i'm right it's not a race thing it's a marriage strategy problem0.96
00:09:12.320yeah i'm saying they've been practicing first cousin marriages for x many generations
00:09:17.280and this is a widely historically documented phenomenon so yikes let's talk about the f
00:09:26.180coefficient because this is a little confusing measures the probability that two alleles at any
00:09:30.620given locus in an individual are identical by descended from a common ancestor so full siblings
00:09:36.260mating they have an f coefficient of 0.25 or 25 first cousins mating no prior inbreeding have an
00:09:44.300f coefficient of only 0.0625 or 6.25 so keep in mind how distant those are right it's 25 for
00:09:54.840siblings 6.25 for non for first cousins a single first covenant marriage adds less inbreeding than
00:10:03.700a sibling marriage however repeated generations in a close family can cause cumulative effects
00:10:08.600because of relatedness builds over time pedigrees collapse as the ancestors multiply so well this
00:10:16.780isn't just like a thing that happens in the middle east i mean like the hapsburg lip was famous in
00:10:22.700europe this this happened a lot with royal families in europe it happened a lot with some
00:10:28.400royal families right some but still it was a thing was trying to do a joke because the uk was looking
00:10:35.240at banning first cousin marriages which they absolutely should yeah john oliver's joke was0.95
00:10:39.420well look at us a country you know that owes its history to it you know incest right or like and1.00
00:10:45.980the reality is is that the the british royal family has virtually no incest in it or first
00:10:51.100cousin marriages they were just queen elizabeth the second was distant cousins they were typically
00:10:57.220second or third cousins there's like one or two i mean like that still squishes out a lot of
00:11:01.980americans which is out a lot of americans but it doesn't have the genetic effects that we're
00:11:06.640talking about in these populations right yes in case you're wondering queen elizabeth was actually
00:11:11.280a third cousin to her husband which is the genetically optimal distance between two people
00:11:18.300in a marriage in the entire british line we are only aware of two first cousin marriages that is
00:11:24.340queen victoria and prince albert and king george and caroline of bunsrick and second in europe where
00:11:31.420that happened we all decided that was a bad thing right like yeah society we were like oh yeah we'll0.90
00:11:38.880never do something that stupid again or normalize something that's it's not like that made europe0.98
00:11:45.640better the hapsburg jaw didn't make everyone be like oh you're a hapsburg lip lip whatever0.99
00:11:52.380i think it was caused by the jaw but okay no it was this big protruding lip it was very
00:12:00.040distinctive you can tell someone's a hapsburg and a lot of old paintings like up there they
00:12:05.440there they are yeah yeah so to go over to like run the the mass on this with strict unbroken
00:12:12.040first cousin marriages at first you start with 0.625 but if you go for four to six generations
00:12:18.840that surpasses 0.25 so you can actually if you are a seventh generation or eighth generation
00:12:26.400first cousin marriage and you're producing offspring your children are actually more inbred