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AIBU?

Share your dilemmas and get honest opinions from other Mumsnetters.

AIBU to think a foetus is alive before birth?

446 replies

Mmmchocolatebuttons · 19/03/2026 16:39

I had a discussion with someone, who believes that a foetus is not alive, until the point they are born. They also asserted that this was not an uncommon view. I have a hard time believing this so I'm putting it to the AIBU poll.

To be clear, I'm pro choice, but I do believe that, for example, a 30 week foetus is factually, scientifically considered to be alive.

Surely, even if you're pro-choice all the way up until birth, you accept that the foetus is alive?

YABU = A foetus is not alive, until birth.
YANBU = A foetus is alive in the womb.

OP posts:
oneofakindmultipack · 20/03/2026 12:34

Anyone who claims a foetus isn't alive is deluding themselves, trying to delude others, or woefully uninformed.

And of course it's a 'person', too. Why would it not be? Why would moving from inside the womb to outside impart instant personhood? Legally, I suppose people and governments can say whatever they want on the matter, but morally, they are absolutely a person before birth. Some of them are just less convenient persons, unfortunately.

Soupsavior · 20/03/2026 12:34

Babyboomtastic · 20/03/2026 12:31

You're right, a lot fail at that stage, but more of them successfully implant with a natural conception. The odds are lower than I said (which was based on implantation of blastocysts and no miscarriage), but they aren't terrible. Most humans never make it to birth granted, and most of those losses will never even be known.

Yes and even with implantation it's if,if,if that they will go onto be a live baby not a given. Just because that scientifically means I think we should class them as what they are rather than what they could potentially be doesn't mean anyone isn't within their right to consider their own pregnancy a human and a baby from day dot, but I can't see how it's helpful or useful to say something like "most humans never make it to birth", again where is the useful application of that belief?

Babyboomtastic · 20/03/2026 12:37

Soupsavior · 20/03/2026 12:29

I'm saying they're human cells for example or a human blastocyst or whatever stage they're at is different some the oversimplified just calling them "a human", because then how do you not confuse them with humans who do require human rights? Why don't their deaths count? Of you're going to say because they're not quite the same as other humans, that's exactly what I'm saying. Likewise the whole argument of whether things are alive or not isn't helpful unless you've got useful framework of how you intend to apply that definition.

Yes but they aren't like the mother's kidney cells either. They are an unique living organism that is formed of 100% human cells just like the rest of us.

It sounds as if you want to alter the definition of human not to ensure accuracy but because you are worried about the morality of abortion if you call it a human.

It's entirely justifiable to say that although it's an early human, that its survival is only at the consent of the one supporting it's life, and that as such, it doesn't have any right to life until it can sustain it independently.

But this isn't a debate about ethics of abortion. It was about a specific claim that was made that a fetus isn't a living organism, and as an offshoot from that on here, the claim that it's not human.

RingoJuice · 20/03/2026 12:39

Soupsavior · 20/03/2026 12:34

Yes and even with implantation it's if,if,if that they will go onto be a live baby not a given. Just because that scientifically means I think we should class them as what they are rather than what they could potentially be doesn't mean anyone isn't within their right to consider their own pregnancy a human and a baby from day dot, but I can't see how it's helpful or useful to say something like "most humans never make it to birth", again where is the useful application of that belief?

Maybe wrt IVF? Pro-life lobby tries to attack IVF because it creates embryos that will never be implanted.

But it’s kind of just mimicking nature, as reproduction itself is kind of a numbers game.

Hemsfa · 20/03/2026 12:41

Pretty sure scientific agreement is life begins at conception?

Soupsavior · 20/03/2026 12:52

Hemsfa · 20/03/2026 12:41

Pretty sure scientific agreement is life begins at conception?

When does science tell us conception is if it says this?

Soupsavior · 20/03/2026 12:53

Babyboomtastic · 20/03/2026 12:37

Yes but they aren't like the mother's kidney cells either. They are an unique living organism that is formed of 100% human cells just like the rest of us.

It sounds as if you want to alter the definition of human not to ensure accuracy but because you are worried about the morality of abortion if you call it a human.

It's entirely justifiable to say that although it's an early human, that its survival is only at the consent of the one supporting it's life, and that as such, it doesn't have any right to life until it can sustain it independently.

But this isn't a debate about ethics of abortion. It was about a specific claim that was made that a fetus isn't a living organism, and as an offshoot from that on here, the claim that it's not human.

I haven't mentioned abortion, I've asked what the useful application of this definition is.

Hemsfa · 20/03/2026 12:56

Soupsavior · 20/03/2026 12:52

When does science tell us conception is if it says this?

When sperm cell and an egg cell fuse to create a new, single-celled organism called a zygote.

Babyboomtastic · 20/03/2026 12:59

Soupsavior · 20/03/2026 12:53

I haven't mentioned abortion, I've asked what the useful application of this definition is.

There doesn't need to be a useful application. The questions were (1) is it alive (2) is it human. The answers to both of those are plainly yes.

Soupsavior · 20/03/2026 13:05

Babyboomtastic · 20/03/2026 12:59

There doesn't need to be a useful application. The questions were (1) is it alive (2) is it human. The answers to both of those are plainly yes.

Of course there does, which is what has already pointed on here about the definition of alive when it comes to may persons use and from a scientific/medical /legal perspective and application. Again, my kidney is human and it's alive, so what? What's the actual point of what you're saying?

Fetaface · 20/03/2026 13:06

rocks are not alive but are generally not described as dead because dead implies was alive and now is not.

Things are either living, non-living or dead. Things that are non-living have never been alive such as a car or a plastic toy.

Soupsavior · 20/03/2026 13:06

Hemsfa · 20/03/2026 12:56

When sperm cell and an egg cell fuse to create a new, single-celled organism called a zygote.

I know but when is that? How has science proven when exactly that occurs in each pregnancy in order to define life that way?

Coconutter24 · 20/03/2026 13:21

IngridBurger · 20/03/2026 11:56

Why are people so obsessed with beating hearts, consciousness and independence equalling life? Mildew is alive. My kidney is alive (but neither conscious, with heatbeat or capable of independent life). Flowers are alive. Bacteria are alive. I cannot believe people find this a difficult concept!

Ok?? So you just answered the question, the baby is alive 🤦‍♀️

Hemsfa · 20/03/2026 13:27

Soupsavior · 20/03/2026 13:06

I know but when is that? How has science proven when exactly that occurs in each pregnancy in order to define life that way?

What do you mean?

Babyboomtastic · 20/03/2026 13:32

Hemsfa · 20/03/2026 13:27

What do you mean?

It doesn't matter precisely which millisecond it occurs in. We know it's alive at the zygote stage and all stages of gestation beyond that.

Hemsfa · 20/03/2026 13:40

Babyboomtastic · 20/03/2026 13:32

It doesn't matter precisely which millisecond it occurs in. We know it's alive at the zygote stage and all stages of gestation beyond that.

Yes exactly

Soupsavior · 20/03/2026 13:42

Hemsfa · 20/03/2026 13:27

What do you mean?

I don't agree with your assertion that all scientists agree life begins an conception because we still don't know when that actually occurs. No one can date a pregnancy to conception for instance but you said scientists agree so I'm asking when science agrees that takes place?

Soupsavior · 20/03/2026 13:43

Babyboomtastic · 20/03/2026 13:32

It doesn't matter precisely which millisecond it occurs in. We know it's alive at the zygote stage and all stages of gestation beyond that.

I'm not asking for a millisecond, even a day would be good. If we're going to say that it life definitely begins somewhere you should be able to define it and count from there.

Quine0nline · 20/03/2026 13:46

Schrödinger's feotus?

Tiswa · 20/03/2026 13:54

Laws in the US and Ireland for example show the absolute dangers of seeing a foetus as a legal person who is alive in their own right particularly with ectopic and missed miscarriages- women have literally died because of it.

Life can begin at conception, a foetus is alive all through pregnancy but it absolutely should not be seen as a distinct legal person until birth where the baby can breathe and exist on their own - rather than relying on the symbiotic relationship between mother and foetus

the scientific answer, the moral answer and the legal answer to when life begins are all and should all be different answers

Soupsavior · 20/03/2026 13:56

Tiswa · 20/03/2026 13:54

Laws in the US and Ireland for example show the absolute dangers of seeing a foetus as a legal person who is alive in their own right particularly with ectopic and missed miscarriages- women have literally died because of it.

Life can begin at conception, a foetus is alive all through pregnancy but it absolutely should not be seen as a distinct legal person until birth where the baby can breathe and exist on their own - rather than relying on the symbiotic relationship between mother and foetus

the scientific answer, the moral answer and the legal answer to when life begins are all and should all be different answers

the scientific answer, the moral answer and the legal answer to when life begins are all and should all be different answers

This exactly! It's not helpful to muddle them together and insist it doesn't matter if it's unhelpful to mix up a lay person use of a word with the other applications.

Hemsfa · 20/03/2026 13:58

Soupsavior · 20/03/2026 13:42

I don't agree with your assertion that all scientists agree life begins an conception because we still don't know when that actually occurs. No one can date a pregnancy to conception for instance but you said scientists agree so I'm asking when science agrees that takes place?

Yes we do know when conception occurs. We also have seen it in the lab itself. When sperm and egg fuse to make zygote.

Hemsfa · 20/03/2026 14:00

Tiswa · 20/03/2026 13:54

Laws in the US and Ireland for example show the absolute dangers of seeing a foetus as a legal person who is alive in their own right particularly with ectopic and missed miscarriages- women have literally died because of it.

Life can begin at conception, a foetus is alive all through pregnancy but it absolutely should not be seen as a distinct legal person until birth where the baby can breathe and exist on their own - rather than relying on the symbiotic relationship between mother and foetus

the scientific answer, the moral answer and the legal answer to when life begins are all and should all be different answers

What about making sure medical exemptions are there more explicitly and carved out when the mother's life is in imminent risk of death?

Tiswa · 20/03/2026 14:01

Soupsavior · 20/03/2026 13:56

the scientific answer, the moral answer and the legal answer to when life begins are all and should all be different answers

This exactly! It's not helpful to muddle them together and insist it doesn't matter if it's unhelpful to mix up a lay person use of a word with the other applications.

Yes so for me
scientifically life begins at conception
morally I think this is one we can argue but IMO being pro choice I think the 24 week viable window works
legally has to be at birth just does for all the medical decisions that need to be made taking a breath independently is a good legal definition of life

Cattenberg · 20/03/2026 14:14

Soupsavior · 20/03/2026 13:43

I'm not asking for a millisecond, even a day would be good. If we're going to say that it life definitely begins somewhere you should be able to define it and count from there.

I think you should read an article on conception, because I'm not sure what part of the process you'd like us to clarify.

I can date my DD's conception pretty accurately, because it happened in a petri dish. One indication that an egg has fertilised normally is the presence of two pronuclei, which can be seen through a microscope.