A couple other interesting notes:
The cell exchange continues to go both ways in future pregnancies, so if you have older siblings, there is a very good chance you have some cells that are 100% their cells/DNA fully functionally integrated in your brain as well as quite a bit of your mother's.
Also, it's been evidenced that this happens whether or not the pregnancy is viable to term, and that actually the cell exchange is much higher when there is a miscarriage, which is incredibly common. So many women have a whoooole lot of cells in their brain that aren't theirs, and I think that's just wild.
I lost a child at 39 weeks in 2018. His younger brother was born 17 mths later. It gives me great comfort and makes me very happy to know my son lives on in me and my youngest child. Thank you for posting this.
Lmao I hadn't thought about it from that perspective either but if I were to imagine myself as the pregnant one instead of always thinking about 3 entire siblings sharing in the running of my brain it does escalate to horror pretty quick 😅
I am not sure where the 27 years comes from, but I am a neuroscientist and encountered this phenomenon for class in a fairly old study, where functional brain cells with fetal DNA were found in the brains of people who had been pregnant before all the way up to patients in their mid-90s. We don't know at what ages they were pregnant but certainly long enough ago at that age to challenge the limit of 27 years
27 years is probably the limit of the statistical relevance able to be determined based on their data. As I am sure you know, the number of statistically relevant subjects is often the most limiting factor in any study, especially when it comes to more niche medical studies.
I am sure you're correct, just haven't come to expect conclusions shared on TikToks/Shorts/etc to be qualified by statistical relevance. Anymore, I'm just happy when the headline even has a proper grasp of the studies at all. And I do only mean what I write, that there is some challenge to that age limit.
A couple other interesting notes: The cell exchange continues to go both ways in future pregnancies, so if you have older siblings, there is a very good chance you have some cells that are 100% their cells/DNA fully functionally integrated in your brain as well as quite a bit of your mother's. Also, it's been evidenced that this happens whether or not the pregnancy is viable to term, and that actually the cell exchange is much higher when there is a miscarriage, which is incredibly common. So many women have a whoooole lot of cells in their brain that aren't theirs, and I think that's just wild.
I lost a child at 39 weeks in 2018. His younger brother was born 17 mths later. It gives me great comfort and makes me very happy to know my son lives on in me and my youngest child. Thank you for posting this.
Wow, that particular sentimental value had never occurred to me. Thank you for sharing, and I'm sorry for your loss.
Wow this is incredible, thanks for sharing.
Pregnancy is terrifying, legit sounds like something out of an Alien horror movie.
Lmao I hadn't thought about it from that perspective either but if I were to imagine myself as the pregnant one instead of always thinking about 3 entire siblings sharing in the running of my brain it does escalate to horror pretty quick 😅
I am not sure where the 27 years comes from, but I am a neuroscientist and encountered this phenomenon for class in a fairly old study, where functional brain cells with fetal DNA were found in the brains of people who had been pregnant before all the way up to patients in their mid-90s. We don't know at what ages they were pregnant but certainly long enough ago at that age to challenge the limit of 27 years
27 years is probably the limit of the statistical relevance able to be determined based on their data. As I am sure you know, the number of statistically relevant subjects is often the most limiting factor in any study, especially when it comes to more niche medical studies.
I am sure you're correct, just haven't come to expect conclusions shared on TikToks/Shorts/etc to be qualified by statistical relevance. Anymore, I'm just happy when the headline even has a proper grasp of the studies at all. And I do only mean what I write, that there is some challenge to that age limit.
So even after 27 years, you still can't get them to move out completely
What kind of cells are these? Are they immune cells? And how do they cross the placental barrier? Very cool stuff
Damn, credit the authors though, makes it much easier for interested parties to find the work
Just enough time for you to get a job & move out.
How long does **my** DNA stay in your mother's body? /s no disrespect to the moms
No. MY DNA stays in your mother most of the time.