Superfetation: When You Get Pregnant... Even Though You're Already Pregnant

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    Dauer: 07:07

    The process of human baby making seems pretty straightforward: egg+sperm+time=baby. But hold on to your ovaries, folks! It’s pretty rare, but sometimes, days or weeks after a person gets pregnant, they can get pregnant again in a process called superfetation.
    Hosted by: Olivia Gordon
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    Sources:
    www.ajog.org/article/S0002-9378(15)02235-8/fulltext
    www.ucsfhealth.org/education/conception_how_it_works/
    www.britannica.com/science/corpus-luteum
    www.mayoclinic.org/healthy-lifestyle/pregnancy-week-by-week/in-depth/placenta/art-20044425
    kidshealth.org/en/parents/week7.html
    www.ncbi.nlm.nih.gov/pmc/articles/PMC6046526/
    obgyn.onlinelibrary.wiley.com/doi/pdf/10.1046/j.1469-0705.1999.14030219.x
    www.tandfonline.com/doi/abs/10.1080/jmf.14.4.217.219
    www.mayoclinic.org/tests-procedures/in-vitro-fertilization/about/pac-20384716
    www.ncbi.nlm.nih.gov/pubmed/16126061
    www.healthline.com/health/superfetation#known-cases
    www.ncbi.nlm.nih.gov/pmc/articles/PMC3551800/
    www.ncbi.nlm.nih.gov/pmc/articles/PMC1626817/
    www.ncbi.nlm.nih.gov/pubmed/23043772
    insights.ovid.com/pubmed?pmid=18978637
    www.ncbi.nlm.nih.gov/pubmed/1031544
    openaccesspub.org/jfb/article/216
    www.publish.csiro.au/rd/rd12238
    Image Sources:
    commons.wikimedia.org/wiki/File:Human_Fertilization.png
    commons.wikimedia.org/wiki/File:Progesterone.svg
    commons.wikimedia.org/wiki/File:Scheme_female_reproductive_system-en.svg
    commons.wikimedia.org/wiki/Fi le:Identical-fraternal-sperm-egg.svg
    commons.wikimedia.org/wiki/File:Uterus_didelphys_0001.jpg

Pamela Mays
Pamela Mays

New reality show: I Didn't Know I Was Pregnant, Again.

Vor 4 Tage
axed jehu
axed jehu

"I recommend this guide: *havy.best/pm-guide/JkS* So grateful it exists in 2020."

Vor 4 Tage
Sam
Sam

What?!

Vor 11 Tage
grintez2
grintez2

"I recommend this guide: *phip.best/pmiracle/yzi* So grateful it exists in 2020."

Vor 25 Tage
Abdou
Abdou

Getting pregenenat

Vor Monat
Ryan Vickers
Ryan Vickers

When I first heard of this (just now at the start of the video) I just assumed that each would come out when ready, but thinking about it a bit more, I'm guessing that's actually not practical and the younger one just ends up being premature in every case?

Vor Monat
duhmez
duhmez

I did not know this was an X rated chanel! I thught it was a whlesome educational channel!

Vor Monat
duhmez
duhmez

She said SPERM! WHOA! What can I tell my kids! That ain't proper to say! OMG!

Vor Monat
kyleene velez
kyleene velez

This actually happened to me but I miscarried the older baby and my son is alive. I was 9 weeks pregnant when I got pregnant with my son.

Vor Monat
Shanna
Shanna

*Sees the video title* wait! That's a thing?!

Vor Monat
Meg Logan
Meg Logan

My twins may be a case of superfetation. They have consistently measured just over 1 week apart. After watching this video, my non-medical guess as to how it happened to me, is age (early 40s), coupled with high levels of progesterone due to nursing and taking milk booater.... Fascinating.

Vor 2 Monate
Meg Logan
Meg Logan

* booaster= Booster

Vor 2 Monate
Claudia Torrez
Claudia Torrez

I am still in shock that I am 41 and almost nine months pregnant!. I managed to get pregnant by following this method: *infertilityinwomen. com* (google it)

Vor 2 Monate
shierrinflae
shierrinflae

So glad I'm not in my early pregnancy anymore because I would be SO FREAKED OUT!

Vor 2 Monate
Matthew Baynham
Matthew Baynham

The only way to really test this subject is for the woman to be mating with multiple men and then check if the babies have different fathers, if not they might just be normal twins.

Vor 2 Monate
Hikari Manekineko
Hikari Manekineko

People with ovaries, eh. I remember when you used to call them "biosex females", but I guess that's too exclusionary now.

Vor 2 Monate
Hikari Manekineko
Hikari Manekineko

@ValerieRaya Thank you for the effort you put in the explanation. AFAIK, these are not utterly new discoveries and I think it's mostly the perception of them that has changed recently. I'm not a biologist so I may be wrong, please feel free to correct me. What bothers me is the loss of perfectly serviceable biological terms, male and female, because of cultural/sociological "warfare". That's why I asked about apes etc - SciSchow has no problem talking/reporting about males and females of any other species, it's only human males and females that get increasingly convoluted terms to describe them. Yes, the world is complex and things are not as clear-cut as we like to think. In any field of science there are blurry boundaries and exceptions to nice categories we learned at school, and our understanding and description is by necessity lacking. We know for centuries now that it's fundamentally wrong to say "the sun rises" - the sun stays (relatively) put, while the Earth rotates under it. But no language on this Earth has even tried changing the phrasing, since it does not matter for day-to-day life. > First of all, female can have many different meanings, depending on who you ask [...] Let's stick with the biology. Would you agree that for most species a proper definition of male/female would be "a sex capable of producing semen/eggs" and "an individual belonging to that sex"? The fact that some individuals are, for whatever reason, unable to produce gametes doesn't "disqualify" them from belonging to a sex whose other characteristics they exhibit. > Now, the assigned sex is based on the shape of the outer organs, sometimes after mutilating > them to fit the artificial binary. The asab (assigned sex at birth) can be male (amab), > female (afab) or intersex. Isn't it true that in majority of human population the morphological sex matches the gonadal and the endocrinological, what with gonads infuencing the endocrinology? What is a difference between the assigned and the morphological sex, isn't the sex of babies determined from the shape of their outer sex organs? When does a hormonal disorder become a change in hormonal sex? As for other animals, do we even know (or care) if and how the different levels of sex differ (or not) in them? When you say "artificial binary" - all our categories are artificial. The question is, are they useful? And in many, many cases, the simple binary division of sexes is sufficient. This doesn't invalidate the exceptions... You justifiably use term "mutilated" for the surgical intervention on intersex babies. I presume that you'd not use that therm for the surgical intervention on transexuals, because in their case it's voluntary? > Now the problem with equating 'people with ovaries' with 'females' is, well, it's > pretty gross and dehumanizing sounding, especially with the incels and neckbears > who will use 'men' and 'females'. I thought using "women" was a no-go for sex-related differentiation (not that I'm completely at home with the terminology for sex and gender...?). In general I'd agree that terms "male" and "female" are less humanising than "man" and "woman". But again: we're talking biology, and grossness should not enter into it. On the other hand, one might say that calling women "people with ovaries" is also dehumanising, reducing them to their gonads. Also, if you criticise use of demeaning language, you should not call the other people by demeaning terms - unless those are all self-identified incels and neckbeards. From the above I would conclude that sex is highly complicated, and we do not have a proper language, either in common parlance or in biology, to be able to express it simply and clearly. So we can either build complex language that will frustrate lay people, try to use neutral language (which is basically impossible in gendered languages such as mine), or stick with not really correct but mostly suitable traditonal terms. The time will tell. Thanks again. It was fun, putting my thoughts to (virtual) paper.

Vor 2 Monate
ValerieRaya
ValerieRaya

@Hikari Manekineko That's good to hear. I have had many bad experiences with people, so I am a bit wary, but always happy if people want to hear things. First of all, female can have many different meanings, depending on who you ask or what sex (or combinations of sexes) you look at. Humans have 5 medical sexes and the assigned sex. The 5 ones are chromosomal (6 common different possibilities, though there could be more and we don't know percentages since most people don't know their chromosomes), gonadal (does the person have ovaries, testes, both, or neither), endocrinologic (basically secondary sex characteristics), hormonal (a sliding scale that can change a lot), and morphological (shape of outer sex organs). None of those are binary and nearly all can change. Now, the assigned sex is based on the shape of the outer organs, sometimes after mutilating them to fit the artificial binary. The asab (assigned sex at birth) can be male (amab), female (afab) or intersex. That is what we mostly mean when we use female in layman terms. Depending on who you ask, it can also mean 'person with a vagina, regardless of whether they have a penis/clitoris or testes/ovaries', 'person who looks "like a female" in every day life', (what those looks are can also differ greatly), 'person with ovaries, a vagina, and a uterus' (which includes many afab people), etc. I will continue this using female to mean afab. Now the problem with equating 'people with ovaries' with 'females' is, well, it's pretty gross and dehumanizing sounding, especially with the incels and neckbears who will use 'men' and 'females'. There is also the problem that is makes you think you have to be female to have ovaries or that having ovaries makes you female, both of which are false. You can be afab and think you have ovaries, than later realize you have testes. You can have ovaries and be intersex. You can have ovaries and be male. For the comparison to work you would first have to clarify you mean 'people with ovaries' when you are saying female and then the term doesn't really fit because you are suddenly saying female to refer to a male or intersex person, and you could just cut the whole thing short and just use people with ovaries, which is not only correct, but much shorter, much easier, and also includes people of all genders (since we didn't get into genders at all, that is another point I find disturbing, how many people suddenly call men females in this context, let's just stick with people). I hope that helped a bit, if you have more question, feel free to ask;)

Vor 2 Monate
Hikari Manekineko
Hikari Manekineko

@ValerieRaya Yes, I am actually interested. I'll be glad to hear (well, read) the explanation, thanks.

Vor 2 Monate
ValerieRaya
ValerieRaya

@Hikari Manekineko What? If you are actually interested and remain civil, I can explain that to you (I am a biologist), but your reply makes me doubt that.

Vor 2 Monate
Hikari Manekineko
Hikari Manekineko

@ValerieRaya So there are no human males and females anymore? What about apes? Cats? Lizards? Where's the border after which terms male and female are OK to use for vertebrates?

Vor 2 Monate
Georgi Georgiev
Georgi Georgiev

On average, a person releases ~0.5 eggs. Because half of all people are man.You can be as politically correct as you want, but making a person synonime for a female is a bit too much.

Vor 2 Monate
ValerieRaya
ValerieRaya

@Georgi Georgiev Yeah, 'people who ovulate'. And that's what they used (kinda)

Vor 2 Monate
Georgi Georgiev
Georgi Georgiev

@ValerieRaya imagine if we had a word for that. Ih, wait - we have!

Vor 2 Monate
ValerieRaya
ValerieRaya

They probably didn't think they had to specify they meant people who are able to ovulate because everyone should be smart enough to figure that one out. Also, some men ovulate, men and female (as in asab) are not mutually exclusive, not all females ovulate, and not all people who ovulate are female. Please learn the basics of the subject before complaining about people using scientifically correct language.

Vor 2 Monate
Jamie Cardinal
Jamie Cardinal

"Hold on to your ovaries!" really? I'm pretty sure there are lots of curious men here, myself included.

Vor 3 Monate
C. Thomas
C. Thomas

There so rare there are only about 10 documented cases today. I’ve researched this a lot because i actually am a superfetation baby and at the time of my birth there were only 7. Whats super cool for my case in particular is that my mother wasn’t on any hormones or anything extra to help her get pregnant, she just naturally became pregnant with my brother and me. Its truly a very fascinating occurrence.

Vor 3 Monate
Patry Atry
Patry Atry

There's literally nothing scientific about SciShow anymore since it's been infested with an anti-scientific agenda of denying biological sex and prioritizing individual delusions over real science.

Vor 3 Monate
ValerieRaya
ValerieRaya

"it's been infested with an anti-scientific agenda of denying biological sex and prioritizing individual delusions over real science" I am not sure we watched the same video. They didn't say like "There are only two sexes", "Only women can get pregnant", "Only females can get pregnant", or anything like this that is based, as you nicely put it, on 'individual delusions' and is 'denying biological sex'. They stayed scientifically correct in their statements.

Vor 3 Monate
Napster2002 . aspx
Napster2002 . aspx

Best wishes to all the expecting mothers out there.

Vor 3 Monate
nobody important
nobody important

Wow some girls just can’t keep their legs shut.

Vor 3 Monate
llamawalrushybrid
llamawalrushybrid

This may be my ignorance but I was really interested to hear why we evolved against this process. It was never touched upon though. I suppose we evolved like this for the same reason we evolved to usually only bare one child in the first place. Furthermore, I wanted to hear what complications this brings. You didn't really touch on consequences aside from "Avoiding sex while pregnant" without explaining why to be avoided. Which really just means this was a super interesting topic!

Vor 3 Monate
llamawalrushybrid
llamawalrushybrid

Oh and are the babies born at the same time? I assume yes from the wording and pictures in the video. I ask because it's funny that I was thinking about a dog having puppies and then like 3 weeks later having the rest.

Vor 3 Monate
Floodlime
Floodlime

Yessss inclusive language

Vor 3 Monate
Mike, from Texas
Mike, from Texas

Always wondered if this could happen.

Vor 3 Monate
CJ
CJ

Wait what? 🤯

Vor 3 Monate
Sam_in_Black
Sam_in_Black

"People with ovaries." If only there was a word for that...

Vor 3 Monate
ValerieRaya
ValerieRaya

There is, you just named it.

Vor 3 Monate
Carole Smith
Carole Smith

I was floored when she said some people can have two functional uteruses!  I don't want that kind of PMS!

Vor 3 Monate
Princess of PinksparklyUnicorns
Princess of PinksparklyUnicorns

Fun fact:I am a twin born through in vitro

Vor 3 Monate
Anh Tiến
Anh Tiến

Tao tưởng có Vietsub

Vor 3 Monate
MrXanthios
MrXanthios

If you abort a superfetation, will inferior republicans charge you with double murder?

Vor 3 Monate
Chantel Wensley
Chantel Wensley

Wouldn't mind this happening ...

Vor 3 Monate
Ian Shelton
Ian Shelton

Like a human litter! 🐕🐺🦊

Vor 3 Monate
VIDEOTOPUP
VIDEOTOPUP

Superfetation When You Get Pregnant wow amazing info you exposed. thanks

Vor 3 Monate
Cassandra Hepp
Cassandra Hepp

A coeworks mom was a product of one of these pregnancies. Unfortunately her sister implanted lower than she did and she was to small when my coworkers mom was born. So her sister (my coworkers aunt) did not survive.

Vor 3 Monate
I AM HUMAN
I AM HUMAN

im surprised people arent saying WHAT GET PREGO AGAIN..RIIIIIGHT..!!! LOL UUUM this is click bait..you cannot get double prego..man when you guys gonna wake up..lmao

Vor 3 Monate
mistressofmadness
mistressofmadness

Brah...

Vor 3 Monate
Milk Carton
Milk Carton

“Well hold on to you ovaries”

Vor 3 Monate
vanessa benoit
vanessa benoit

Who's this chick I want the vlog brothers telling me about super pregnancy

Vor 3 Monate
Jane F
Jane F

I love the inclusive language ❤️

Vor 3 Monate
MP Animations
MP Animations

Fraternal twins in a nutshell

Vor 3 Monate
Darrel Prajogo
Darrel Prajogo

She's pregananant

Vor 3 Monate
Gilgamesh
Gilgamesh

I can’t wait to start farming for a full odds shiny baby

Vor 3 Monate
Connor McLaughlin
Connor McLaughlin

thank you so much for using gender neutral language 😩😩😩 i didnt even realize until half way through because its so natural for me to hear. im currently a nursing student and just finished the reproductive unit in my A&P II class. my professor took on the challenge of editing her power points to include this kind of language despite the anxiety she had about messing up. i just sent her this video to show other people are doing it too and even though youre taking about anatomy that has always been viewed in a binary light, its an easy change without getting lost in translation. this is how we make it a better environment for everyone !!! (P.S. this is the thing im most excited about bringing to my future patients. being queer and nonbinary, I will be able connect with them on a different level if theyre part of the community. if i am able to change the language at my college, i will be able to advance healthcare and treatment of LGBT+ patients within my care) ((edit: some grammar stuff))

Vor 3 Monate
Chloe Johnson
Chloe Johnson

I read about a woman who was pregnant with two babies from two different fathers at the same time, which must have been super awkward for everyone involved, including the kids once they were old enough to know what had happened.

Vor 3 Monate
kefkaZZZ
kefkaZZZ

Cervical Mucus Plug. Think about that for a while.

Vor 3 Monate
_Galaxy Ren Kitten_
_Galaxy Ren Kitten_

Oh my hecc how does dat not get called pregananant

Vor 3 Monate
Daniel Johansson
Daniel Johansson

-Hold on to your ovaries! (me) did you just assume my snowflake

Vor 3 Monate
Ky Broflo
Ky Broflo

the gender neutral language makes this so comfortable to watch

Vor 3 Monate
Dee Alfaro-Baeza
Dee Alfaro-Baeza

Agreed 😊

Vor 3 Monate
Lemonjelli
Lemonjelli

“People with ovaries”

Vor 3 Monate
EyemanYT
EyemanYT

Is it possible to get pregnananant eventhough you are already pregnanant while being pregnant?

Vor 3 Monate
KelsQi
KelsQi

❤🔬

Vor 3 Monate
Lostgears
Lostgears

PREGANANANT???

Vor 3 Monate
Anton-Constantin
Anton-Constantin

This sounds like something that would happen to one of Onision's wives

Vor 3 Monate
Silentil
Silentil

This would be really cool to do artificial, then you only have to give birth in about the span of one pregnancy and your kids will be in the same grade.

Vor 3 Monate
willythemailboy2
willythemailboy2

..."vanishingly rare"... And yet apparently hundreds of them will post comments on this video.

Vor 3 Monate
Taurus Capricorn
Taurus Capricorn

Does it happen when you have sex while mate is pregnant?

Vor 3 Monate
Ryn Mace
Ryn Mace

I notice and appreciate your lack of gendered language in this video. It’s awesome, thank you!

Vor 3 Monate
Johan Smith
Johan Smith

At work this happened with one of the sows at work... I work with pigs and dairy cows!

Vor 3 Monate
E m u i i
E m u i i

I've been trying to figure out this... your mom is pregnant with you right? What if you are allergic to peanuts and she eats peanut butter? Will you have a allergic in the womb?

Vor 3 Monate
enaibe e
enaibe e

I know there's science name for "clump of cells". Please do that instead

Vor 3 Monate
matthew spence
matthew spence

Hol up

Vor 3 Monate
Majestic Word
Majestic Word

"People with ovaries... " 🤨🤔💡 women!🤦🏾‍♀️

Vor 3 Monate
Ky Broflo
Ky Broflo

And intersex people and nonbinary people and trans men. Whew

Vor 3 Monate
Djordje Oljaca
Djordje Oljaca

Pregnant^2

Vor 3 Monate
Sandra Abuor
Sandra Abuor

I read this as superinfestation 😂

Vor 3 Monate
Caterfree10
Caterfree10

Thank you for using gender neutral language. 💜 ...this is still a thing that makes an already nightmare scenario for me even MORE of a nightmare. D:

Vor 3 Monate
Shisae Chan
Shisae Chan

PREGANANT

Vor 3 Monate
K Knight
K Knight

I'm not sorry to say this but that blouse Olivia was where is ugly it is not flattering on her boring face.

Vor 3 Monate
White Raven
White Raven

Hold on to your ovaries folks

Vor 3 Monate
Alpha Gaming
Alpha Gaming

Non-binary and gender nonconforming people I know thank you for using inclusive pronouns!!

Vor 3 Monate
oyonan
oyonan

Super rare as in virtually impossible. Give it a google. There might be one woman experiencing it at a time in the world. I had to study up on it when one of my ex-girlfriend tried to put a fake pregnancy on me and later on claimed she got pregnant again after already being pregnant. Very long story short, there was never any pregnancy and I’m happily married to someone else.

Vor 3 Monate
Shaun Zelarom
Shaun Zelarom

Are person's affraid of the affraid of the word 'Woman'? It only used 3 times this episode.

Vor 3 Monate
Ky Broflo
Ky Broflo

Because those 3 times were in reference to a specific person's identity. Cmon now

Vor 3 Monate
ValerieRaya
ValerieRaya

Nah, it's just easier. I mean, 'pregnant person' is way easier than 'pregnant binary and non-binary people'. The effects even more obvious once you start naming individual genders. I don't know why you think calling women people means you are afraid of the word. Women are people, as shocking as that might be to you.

Vor 3 Monate
Shaun Zelarom
Shaun Zelarom

0:56 ---OHPH! NEVERMIND...I just released an egg from my testicle

Vor 3 Monate
Shaun Zelarom
Shaun Zelarom

0:56 --- "Normally a person ***OF THE FEMALE SEX***....."

Vor 3 Monate
ValerieRaya
ValerieRaya

Not really true either. A person with ovaries can ovulate, a person with a uterus can gestate, etc, is the better and easier way to say it.

Vor 3 Monate
Sara Jean
Sara Jean

The person? Omggggggg!

Vor 3 Monate
jho
jho

sounds like the plot of Knocked Up 2

Vor 3 Monate
Odin
Odin

My mother had a miscarriage while she was pregnant with me, but I was the younger foetus, and she didn't know before she was on an ultrasound and they found a foetus about a month younger then they expected. It was my mother's third miscarriage, but I think what the video explained is what happend

Vor 3 Monate
Monique Novak
Monique Novak

Yo dawg

Vor 3 Monate
steve154life
steve154life

I found out i waz going to haft my daughter when tha pregnancey waz allready 4-5 months and tha strange craveing started and of courae tha weight gaine.evwr tried radishes with strawberries

Vor 3 Monate
Evelina Holmqvist
Evelina Holmqvist

Me and my sister are fraternal twins and I was a lot smaller than her, I even had to take growth hormone shots when I got older. My mom took some kind of hormone to get pregnant (don't know what kind) so what if that messed something up with the conception and I'm actually a superfetus!?

Vor 3 Monate
Dashawn Corder
Dashawn Corder

"Clump of cells". This has an under tone of being political. Why not just call it the scientific name it's always been called. A zygote. But no. We must push our political agenda into every facet of society. Smh.

Vor 3 Monate
Ky Broflo
Ky Broflo

Dude...not everyone knows what a zygote is

Vor 3 Monate

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