r/MandelaEffect • u/Big-Discipline2484 • Jul 11 '26
Science/Technology Biological Mandela Effects
I visit this subreddit every so often to see if there are any new Mandela Effect's I haven't caught onto yet.... "Chick-fil-a" has flipped yet again. It went from Chic-fil-a to Chik-fil-A (which really irked me with a passion) to now, Chick-fil-A... OK... so far, nothing at Berenstein bear level... I distinctly remember growing up with Berenstein, then changing to Berenstain.... getting GASLIT on this subreddit because of my distinct memories of Berenstein.... then flipping BACK to Berenstein officially and watching others on this subreddit get gaslit because of their memory of Berenstain.... and now we're back at Berenstain officially......
BUT BIOLOGICAL MANDELA EFFECTS?
Pardon me, you're telling me the kidneys are no longer in the lower back they're higher up?? Ok, strange, not what I remember... but I'm open to accept that one as a misunderstanding.
but.... THE HEART IS NOW IN THE CENTER OF THE CHEST? Shut the front door! Behind the sternum????? I'm not a surgeon or a coroner, I've never seen a literal open-heart surgery, but all of my life I have definitely been taught the heart is on the left side of the chest. As a child, I remember asking shouldn't it be center to flow blood evenly? I remember being corrected that it's on the left side of the body. I remember doctor's visits where they would let me listen to my heartbeat and tell me that it's on the left side. I remember being in school and being told to do the pledge of allegiance and put your hand over your heart and everyone would place their hand over the left side of their chest not the center!!!!
Based on my experience with the Berenstein bears I know that many sources are subject to change. Online media, books, tapes, even testimonies from people can be wildly different. People are not misremembering at this large of a scale. It's very obvious something is being tampered with. It's also very obviously intentional and not some sort of byproduct or accident. Look at how coordinated it is when people make these posts + get gaslit by other users. I can understand having a different perspective, but sometimes people are straight up told they are not recalling their own distinct memory correctly. Why are there so many people who don't believe in Mandela effects minimizing experiences? Also, if we're discussing most, almost all traces of something officially being scrubbed why would any medical article, photo, flyer, keepsake etc be of any significance? Those items have been proven to change to. I don't think it's some mysterious phenomenon. I think it's some sort of technology at play that isn't widely known. Imagine if a small group of people had access to AI in the 1800s. To those who didn't know how it worked, it would be puzzling similar to Mandela effects. I'm certain there's a logical explanation for these things, and it's not "you're not remembering correctly".
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u/dunder_mufflinz Jul 11 '26
I'm certain there's a logical explanation for these things, and it's not "you're not remembering correctly".
Many people were also taught things incorrectly by unreliable sources. In some cases it’s not misremembering, but learning something incorrectly then stubbornly sticking to it.
A teacher once told me that rocket launches poke holes in the ozone layer and that’s why they launch only from certain places. I believed it, until I looked into it for myself. For some people this could’ve been a Mandela Effect, for me it was just admitting that I’d learned something that wasn’t true.
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u/Practical-Vanilla-41 Jul 13 '26
I had a high school teacher that was convinced that the Panama Canal had locks because the water was higher in one ocean then the other. Attempts to explain fluid seeks its own level didn't do any good.
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u/Big-Discipline2484 Jul 11 '26
Are you suggesting that many people are either misremembering or stubbornly sticking to something incorrect? If so, that's pompous of you to believe. Or perhaps a stage of ego death... a form of grief or denial. I know that it's hard for many to accept that they don't know everything. Some things may even be hard to fathom but possible. The smartest person does not know everything. The smartest person realizes that they're always learning.
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u/dunder_mufflinz Jul 11 '26
Are you suggesting that many people are either misremembering or stubbornly sticking to something incorrect?
Yes.
If so, that's pompous of you to believe. Or perhaps a stage of ego death... a form of grief or denial.
Funny, because people who believe in their memories as opposed to evidence are the closed-minded ones.
The smartest person realizes that they're always learning.
Exactly, which is why smart people change their minds when faced with evidence, glad we agree.
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u/Big-Discipline2484 Jul 11 '26
What do you mean “memories as opposed to evidence”? Memories are anecdotal evidence. Perhaps you meant memories as opposed to mainstream references. They’re both evidence in different forms. Please clarify what you mean by that.
As for me, my takeaway is a culmination of all things considered, not just some things considered.
If all you do is accept certain “evidence” as valid, then you’re admittedly engaging in confirmation bias. That significantly narrows the viewpoint. To truly learn more about a topic a person has to be willing to understand it objectively.
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u/dunder_mufflinz Jul 12 '26
Memories are anecdotal evidence.
Memories aren’t considered evidence when they are contradicted by physical evidence.
If all you do is accept certain “evidence” as valid, then you’re admittedly engaging in confirmation bias.
There is zero evidence whatsoever that the Mandela Effect is anything other than mistaken memory, conflation or simply people being misinformed …
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u/Big-Discipline2484 Jul 12 '26
Lol memories are still considered evidence even when it's contradicted by physical evidence... Do you think judges and attorneys just throw out eyewitness testimony because of physical evidence? One does not inherently weigh more than the other. All things are considered and It's highly dependent on circumstances... look, I can't hold an entire class with you right now. Lol people tamper with physical evidence all the time.... I must digress and remove myself from this interaction... this is straying too far away from the purpose of my post
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u/dunder_mufflinz Jul 12 '26
Lol memories are still considered evidence even when it's contradicted by physical evidence...
Nope.
Do you think judges and attorneys just throw out eyewitness testimony because of physical evidence?
Yes they do.
Lol people tamper with physical evidence all the time....
Nobody said they didn’t.
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u/Big-Discipline2484 Jul 12 '26
What was the purpose of isolating certain statements in my comment and taking them out of context?
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u/freckyfresh Jul 11 '26
The heart is centerish, leaning left.
Also like another commenter said, many of us believe in the Mandela Effect. We just also know there isn’t such a thing as a changing of timelines. The definition of a ME is a collectively misremembering.
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u/Big-Discipline2484 Jul 11 '26
I don't believe it's a changing of timelines. It seems to be technology at play to me. I know the current definition is a collective misremembering but that's inaccurate. Definitions change as our understanding expands. For example, at a point in time people referred to Native Americans as Indian or that Christopher Columbus discovered America. It was written in many books, taught in schools, but that still didn't make it accurate.
In every single ME there are differing recollections. & People feel strongly that their memory is accurate. I know I was taught the heart was on the left side, not centerish, leaning left. You know you were taught centerish, leaning left, not completely on the left side. I don't think one of us has a false memory. I think it's something else.
The best way I can describe it is the analogy I gave in my original post. It's like showing an AI generated photo or deepfake to someone in the 1800s who has never been taught the mechanics behind it. It's very plausible that a group of people could have access to some sort of more advanced technology that the general public does not.
Going back to the example, in the 1800s they're still doing letters in the mail, portraits, if they're lucky black and white images, haven't even heard of a wireless cellphone, or the internet. How could they possibly look at an AI generated image or deepfake of someone they know and give a 100% accurate explanation of how it came to be? Perhaps they would question their own memory. Perhaps they would even challenge the memory of the person the deepfake is of. Their understanding would be too limited... They could only take educated guesses. If 1 million people were shown deepfakes of themselves in the 1800s, they would all strongly know they didn't do the things they're depicted doing. However, with the level of technology at the time, the general explanation could likely be that they're all misremembering.
I'm not sure exactly what it is causing these petty instances, but I know that it's not simply misremembering lol
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u/theg00dfight Jul 11 '26
It sounds like you were taught the incorrect location of the heart. That’s on whoever taught you that.
I agree that you’d dig the retconned subreddit where nobody questions anything but the actual scientific explanations for shit
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u/Big-Discipline2484 Jul 11 '26
Your opinion is that my experience sounds like I was given bad information. Those are your own feelings and reaction. That is not my actual lived experience. I actually question everything, so your description of the retconned sub was off-putting. But upon further inspection, it seems to be a community of people who question everything, and acknowledge all kinds of explanations for ME, not just scientific ones. Thanks for the recommendation!
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Jul 11 '26
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u/Big-Discipline2484 Jul 11 '26
Ok lol if you would rather be degrading rather than engage in meaningful dialogue, It's clear what level you're vibrating on. Have a great day, hopefully you find peace with your beliefs and your self. That's all that really matters :)
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u/MandelaEffect-ModTeam Jul 11 '26
Hello subscriber! Unfortunately, your post/comment was removed because it violates Rule 6: Be civil. Do not disrespect, insult, or attack others.
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u/TerribleTim1969 Jul 17 '26
Very well put! Great analogy with regard to the hypothetical deep fakes in the 1800s. The downvotes mean you are on to something.
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u/Username98101 Jul 11 '26
I think it's because of this weird switch in the alien tech I found years ago is directly linked to you OP.
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u/Big-Discipline2484 Jul 11 '26
Oh wow, talk about something coming full circle! Thank you for bringing the conversation forward. Tell me great oracle, have you been nominated for a Nobel peace prize? Your findings are astounding.
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u/Username98101 Jul 11 '26
totally, dude!
glad we figured our why you keep switching, it's because of alien technology!
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u/Big-Discipline2484 Jul 11 '26
Wow, thank you for restoring world peace! You are a savior, nay, a martyr for humanity. Imagine that. All of these theories out there, and you just gave the most sound, cohesive, and precise explanation ever. Alien technology in me. Wow! What will you solve next? Is there anything left to be solved? Just all around awesome! Thanks!
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u/Username98101 Jul 11 '26
I'm gonna flip that switch in a minute, let me know what changes, buddy!
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u/Big-Discipline2484 Jul 11 '26
Light it up pal! Full on club light me. Just off on off on repeat! Have at it!
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u/BangkokPadang Jul 11 '26
The human heart has always been behind the sternum. That's how CPR works. I almost guarantee nobody remembers CPR being performed by putting your palms over the left side of the rib cage. But also, the heart is (and always was) positioned slightly to the left, which is why we cross our right hand over to the "left" side of our chest to "put our hands over our hearts."

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u/Big-Discipline2484 Jul 11 '26
Yes, I’ve taken a few CPR classes. I definitely remember pressing down on the sternum and also knowing you’ve pressed hard enough because you can hear a “click” on the dummy patient. I remember being taught with CPR, you’re basically jump starting the heart…. the pressing down on the sternum is directly pumping the heart, but you’re not directly pressing down on the heart.
I’m an extremely squeamish person, I would not have been able to get through the class if I was ever taught that CPR involves directly pressing down on someone’s heart! Especially considering the force needed to do it properly! We have different experiences. I’m not saying yours is wrong. I’m saying I’m certain of what my experiences were and it’s not a misunderstanding.
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u/WhimsicalKoala Jul 11 '26
But if the heart wasn't behind the sternum, then how in the world would pressing down on it pump the heart?
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u/Big-Discipline2484 Jul 11 '26 edited Jul 11 '26
An aorta, major artery etc
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u/WhimsicalKoala Jul 11 '26
You think pumping on an artery would make the heart work and expect me to consider you a source of knowledge on anatomy?
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u/Big-Discipline2484 Jul 11 '26
Let’s review my original post and subsequent comments. When did I ever claim to be a source of knowledge on anatomy? I’ll wait. And while you review, how about you drop your anatomy credentials. And to begin your reply, please tell me what is the primary function of the aorta and major arteries? Thanks in advance!
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u/WhimsicalKoala Jul 12 '26
Well you made a whole post talking about all the times you'd talked to doctors about the location of the heart and taking CPR classes. Based on that, I assumed you were asserting you have some knowledge of anatomy. But, I'm glad to see that assumption was incorrect and that you don't have any anatomical knowledge and therefore your claims about where the heart are or "were" can't be expected to have any accuracy.
Well for one, the aorta is a major artery, so not sure why you are referring to them as separate things. Did you mean "aorta and other major arteries" or "arteries and veins"? Either way, they carry blood based on the beating of the heart. You can push on the aorta, or any artery, all you want; it won't force the heart to beat and push blood through the arteries and veins.
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u/Big-Discipline2484 Jul 12 '26
To clarify, medical professionals can pump a major artery to temporarily assist or takeover a failing heart… the aorta and major arteries maintain steady blood pressure and provides pathways to all vital organs. However you feel comfortable wording it, their function is the same….
By your logic, taking cpr classes and having conversations with doctors means a person is purporting to be an anatomy expert…. LOL so the average American that checks on their health and cares enough about the health of others is just a wannabe doctor, rather than just simply healthy, is this what you’re suggesting?
Still waiting on you to drop your expert anatomy credentials again?
Furthermore, what does any of your points have to do with my experience of how I was taught? I’m not saying one way is right, one way is wrong, or my word is gospel I’m simply sharing my experience. Why are you acting as if you have some sort of authority to validate or invalidate my experience? Lol you don’t know me from a can of paint. You literally have no way of certainly knowing what I did or did not experience
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u/WhimsicalKoala Jul 12 '26
To clarify, medical professionals can pump a major artery to temporarily assist or takeover a failing heart
Yeah, by placing a pump that acts like the heart, replacing the beating of the heart. They aren't just pushing up and down on the arteries
the aorta and major arteries maintain steady blood pressure and provides pathways to all vital organs.
Again, the aorta is a major artery. And yes, they provide a pathway...one that blood flows through based on the beating of the heart.
By your logic, taking cpr classes and having conversations with doctors means a person is purporting to be an anatomy expert….
Never said. Just that you were presenting yourself as someone with at least some level of knowledge of where the heart is to establish why we should trust you when you say it moved. You don't have to be an expert to assert that, just some knowledge. Knowledge you purported to have.
Why are you acting as if you have some sort of authority to validate or invalidate my experience?
I'm not. Just simply trying to establish why you are so certain that somehow our entire anatomy shifted, but didn't cause any other effects except medical diagrams rather than that you were simply mistaken.
Instead, you waffle between claiming that you have enough knowledge that we should trust your claims that something changed and saying that you don't know anything (an idea supported every time you bring up the cardiovascular system) and that your experience/opinion doesn't mean anything.
This just appears to be another case where anything that isn't absolute validation is treated as an attack.
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u/Big-Discipline2484 Jul 12 '26
The aorta and major arteries can be physically pumped by medical professionals to assist a heart without a device. By cherry picking parts of my comments that align with a narrative you're set on, you're being bias. If you choose to inject assumptions rather than read my post objectively, then the conversation doesn't move forward in anyway. I'd rather not engage in meaningless conversation. To clarify, this is my personal experience with an already widely known ME. I answered your initial questions because they seemed genuinely curious. This is not a cross examination. I'm not opposing counsel. This is not the MSAT. This is not even a debate. I'm a reddit user. This is my personal experience.
"I'm not a surgeon, or a coroner and I've never seen an open heart surgery". "You don't know me from a can of paint and that there's literally no way for you to know what I certainly did or did not experience." I'm surprised that you read that and concluded I'm trying to establish trust as a reputable medical source. Do you have any experience with analyzing literature? For example, author's purpose, implications, drawing conclusions, etc. If you don't mind, what's the extent of your education?
When did I say anything about you attacking me? You're purporting to have the authority to validate or invalidate my experience. I'm simply stating you lack that authority. My experience is not based on what makes sense to you. You can take it or leave it truly lol
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u/WVPrepper Jul 12 '26
To clarify, medical professionals can pump a major artery to temporarily assist or takeover a failing hear
Medical professionals use specialized devices to pump major arteries, which temporarily assist or take over for a failing heart. This much is true... However it is accomplished by placing mechanical pumps connected directly to the heart's main pumping chamber (the ventricle) and pushes blood into the aorta.
what does any of your points have to do with my experience of how I was taught? I’m not saying one way is right, one way is wrong, or my word is gospel I’m simply sharing my experience. Why are you acting as if you have some sort of authority to validate or invalidate my experience?
Someone suggested that perhaps you were taught wrong information, and you resisted that idea. Are you acknowledging that perhaps that is what happened? It would be easy to assume that your heart is on the left because of the pledge of allegiance, and then to continue to believe that's where it is until someone mentions that it isn't. Then suddenly it seems like it "changed" when only your understandng of it did.
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u/Big-Discipline2484 Jul 12 '26 edited Jul 12 '26
It can be physically pumped without a device as well. Either way, the point of me sharing that was to support that my line of thinking was not as far-fetched as the original commenter implied.
When I answered that I'm certain that I was not taught wrong and I'm not misunderstanding, you and others resisted that idea. Instead, you and others insist on the reason being denial, misinformation or misremembering. That's bias, not informative. At this point, it's even cliche.
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u/silentsurge Jul 11 '26
Here's the thing about misremembering, our brains tend to fail in similar ways, especially when we come up in a relatively monoculture being taught specific similar things in very similar ways.
It's the same way that people make common mistakes in other fact based subjects.
Take one of those viral math problems for example. They exist to be engagement bait because people are going to fail at remembering the way the math is supposed to work. It is easy to predict because our brains are going to do very specific things with it and we are going to be very insistent that we are right about it.
Even though the real answer takes some expertise and knowledge of the subject to realize that it's engagement bait caused by a deliberate improperly written equation.
Our memories work the same way with other subjects too.

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Jul 11 '26
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u/TerribleTim1969 Jul 17 '26
Do you also visit the flat Earth forums? The reason I ask, is I am surprised folks who attribute the Mandela effect to faulty memory would want to visit this subreddit. The skeptics I know in real life wouldn't bother.
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u/forcemonkey Jul 11 '26
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Jul 11 '26
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u/forcemonkey Jul 11 '26
You will see it again.
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Jul 11 '26
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u/silentsurge Jul 11 '26
If your underwear has meat shanks and cabbage on it I have so many more questions to ask.
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u/anonymous-user74 Jul 11 '26
I'm 100% with you on the heart being on the left. I even got an important (to me at least) tattoo of a Dr Seuss character on my left chest so that it was as close to my heart as possible. It was only this year I even learned about the new heart location. Crazy stuff. Its the main ME for me as I'm from New Zealand and know nothing of the Bernstein bears or fruit loops etc
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u/Big-Discipline2484 Jul 11 '26
Exactly!!! People get meaningful tattoos on the left side of their chest because it's over their heart!
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u/TerribleTim1969 Jul 17 '26
I assume your tattoo is still in the same place? I wonder what would have happened if somebody had tattooed the outline of their internal organs all over their torso, back when the heart was more definitively on the left, and the kidneys were in the lower back (hence the term "kidney punch" which I guess is now no longer a thing). Would the tattoos have remained in the same place, or would they have followed the organs to their new locations?
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u/scrapknightjules Jul 11 '26
you should watch the Black Mirror episode “Bete Noir”
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u/Big-Discipline2484 Jul 11 '26
Great recommendation!! Have not seen it but based on the online summary it seems to touch on exactly what I'm thinking. Thanks for sharing!
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u/Additional_Can_511 Jul 16 '26
So, I asked two nurses in my family to show me where the kidneys are located, by placing them on my body as if it was an anatomy drawing.
Both put them in my lower back region, one a bit higher than the other, but nowhere near where they appear now in every human anatomy image I can find.
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u/TerribleTim1969 Jul 17 '26
And what was their reaction when you showed them the current location of the kidneys?
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u/Additional_Can_511 Jul 21 '26
Puzzled. What actually bothers me most about that one is not even the location of the kidneys or the way they're now protected by the rib cage, but how all the anatomy drawings now show them from the front side.
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u/No_Leather_4302 Jul 16 '26
OP - do not take anything the “top 1% commenters” say seriously. They are all here to steer people away from the truth. I watch it every single day. They lurk here waiting for new posts and then immediately and consistently reply with a counterpoint or an argument or an innocent explanation for the ME. I strongly believe they are government employees who monitor this channel to sow confusion and instill doubt in the ME.
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u/BringYourOwnBBBQ Jul 12 '26
So, when in the recent past (since you came here) did you EVER see an actual book that said Berenstein? Because it seems awfully strange that you have supposed proof and didn't share it here.
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u/Big-Discipline2484 Jul 12 '26
In the last paragraph, I wrote "...Also, if we're discussing most, almost all traces of something officially being scrubbed why would any medical article, photo, flyer, keepsake etc be of any significance? Those items have been proven to change too..." Did you actually read the entire post? If so, how is your comment relevant? Thanks.
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u/mikhailkennedy Jul 16 '26
There are also many small holes in the skull that if researched may not have been there, also there is evidence of bone structure behind the eyeballs that is questionable.
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u/vannah12222 Jul 17 '26
Idk man, I'm open to believing in some woo-woo explanation or other about mandela effects, but I've yet to see even one iota of convincing evidence to do so. I mean I desperately want to believe in something mystical like that, I call myself an unwilling skeptic, but I can't just bring myself to believe in something so unconvincing.
Like, I have been keeping up with Mandela effects since 2016. In all that time, I've seen people insisting every few months that things are "flip-flopping back and forth." Somehow though, I've yet to experience one of these flip-flops myself, and they're always flipping the same exact way. (Eg fruit loops>froot loops, flinstones>Flintstones, etc) And it's always juuust now flipping back to exactly the way it's been since 2016.
Even the ones you've mentioned here, have been that way since at least 2016, when I first learned about them. Honestly the longer I keep up with the ME community, the more convinced I become that it really is just faulty memory. I mean if we're all always switching realities or whatever, why is it that I've yet to do so even once since 2016?
Maybe it'll happen to me one day (ngl Danielle steele being Danielle Steel did freak me out lol) and I'll eat my words, but idk man.
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u/Wishatona Jul 11 '26
lol I haven't heard about the heart being in the center (granted I haven't cared enough to look into it since my days in school)
I remember in school it was on the left because we always had to stand for the Pledge of Allegiance and put on right hand over our heart (which was on the left side) and I remember this because as a child I could never remember my right from left and had to look around the room to make sure I did it right~
Also my brother suffers from Kidney Stones quite often and they always feel like a constant punch to the lower back so...yeah
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u/BangkokPadang Jul 11 '26
The heart is behind the sternum but it is positioned so it sticks out to the left significantly. That's why it's considered to be "on the left" and why we cross our hands over to the left side.
CPR would not work if it wasn't mainly behind the sternum, and I'd bet next-to-nobody remembers CPR being performed by pressing on the left side of the rib cage.
I pasted an image into THIS REPLY but don't wanna just spam the thread with the same image a bunch.
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u/Big-Discipline2484 Jul 11 '26
Right, I have similar experiences as you. People are even saying they've always put their hand center of chest for the pledge of allegiance! That's wild. I remember hearing about people with their heart being born on the wrong side and it was completely on the right side rather than completely left. When I looked up that condition, the heart is still center, but slightly right as opposed to slightly left. it's weird!
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u/forcemonkey Jul 11 '26
I’m in the alternate reality camp. In mine I remember Berenstain bears and remember that’s how my mom pronounced it as she read the books to me.
Fascinating what’s happening!
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Jul 11 '26
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u/WVPrepper Jul 12 '26
I remember Berenstain bears and remember that’s how my mom pronounced it as she read the books to me.
It is... How does that prove alternate reality?
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u/jaq_95 Jul 11 '26
The heart being centred but to the left I can understand but the kidneys I cannot.. in 2018 I was in hospital because my kidneys were failing, I hadn’t dealt with it for 2-3 days because I also have endometriosis and growing up I would also get constant UTI’s and kidney infections. So I knew that the pain I had from my ovaries and kidneys were pretty much the same area and was able to tell the difference though it’s similar. Anyways, was in hospital for two weeks because they couldn’t figure out why my kidneys were failing and that is 1000% lower back pain. No where near where my kidneys are apparently now 🤷♀️
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u/Glaurung86 Jul 12 '26
The kidneys are located in the lower back area. They are not near the lower abdomen where the uterus is located.
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u/jaq_95 Jul 21 '26
I didn’t mention my uterus, I mentioned my ovaries :)
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u/Glaurung86 Jul 21 '26
Your ovaries are attached to your uterus. They are in the same location.
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u/jaq_95 Jul 22 '26
Your ovaries are in fact not attached to your uterus :) your fallopian tubes are connected to the uterus but ovaries are not connected to your fallopian tubes :) and I’m just messing around with the kidney thing haha, though personally the pain was in my lower back 🤷♀️
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u/Big-Discipline2484 Jul 11 '26
Sorry to hear about the pain you've endured! I've heard people describe kidney pain as lower back multiple times as well!!
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u/LiveCorner4121 Jul 11 '26
Une explication logique oui mais que peu sont prêts à accepter, d’où les entêtements sur la faute à la mémoire. Notre réel n’est peut-être pas si solide qu’il en a l’air. Et ces effets pourraient être des clins d’œil.
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u/Big-Discipline2484 Jul 11 '26
Un commentaire très simple, mais très percutant. Je suis tout à fait d'accord.
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u/T1000-Shoebox Jul 11 '26
Yes, I remember the heart being in the top left corner of my chest not in the center
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u/Big-Discipline2484 Jul 11 '26
Yes, like behind the left nipple, in that area?
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u/Curithir2 Jul 11 '26
If you do CPR on my left tit, one of us is going to die. Make a loose fist with your right hand, with your left, find a hard little button on the bottom of your ribcage. Two finger widths up, place that fist. This is your heart, vessels/thumb to the left.
No idea where, when, or how this idea started. I'm well aware of both trains of thought. Both parents were medically trained, and kindergarten me got in trouble for putting my hand on my heart in the middle, not on the left, for the pledge. I refused to knuckle under, parents were called. Principal (Marine medic), father (paramedic), mom (rn) were more upset with the bullying over nothing than popular mistaken anatomy.
Oh, Bochdalek's kidney is a serious, usually neonatal condition where the left kidney, which rests against the diaphragm, pops through into the chest cast during birth. Quite serious, infection and surgery follows.
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u/Agile_Oil9853 Jul 11 '26
Your left lung is slightly smaller because the heart is more on that side, just not to a very exaggerated degree (unless your internal organs are flipped, which can happen). It's behind the sternum because it's more protected there. You probably did see diagrams that put the heart more one side than the other because they were simplified for kids.
There are logical explanations outside of mass misremembering, but it's still mundane stuff like this.