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“Your Internal Organs Itch”: 58 Facts About The Human Body That Might Keep You Up At Night
Even if you think you learned everything that you needed to know way back in biology class, everyone has knowledge gaps. And often you’re not even aware that they exist. There are tons of things we don’t know—or incorrectly assume we know—about how the human body works.
To shed some light on this topic, internet users shared some of the creepiest and coolest facts about the human body in an intriguing AskReddit thread. We collected the most interesting, spine-tingling ones to share with you, and you’ll find them below. Scroll down to learn something new that might just change how you see the world… and yourself.
This post may include affiliate links.
#1
The reason bleach feels “slippery” if it gets on your hand is because of saponification, it’s breaking down the fat in your skin and making it into soap. Always wear gloves when handling bleach. .
Emma London 6 days ago
When you eat lutefish, a traditional Norwegian Christmas dish, and tastes slippery 😬
George Costanza 6 days ago
It's not breaking down the fat "in" your skin. It's breaking down oils on the surface of your skin. The fat in your skin is below the keratin, the epidermis, and the dermis. Skin is a great natural barrier and no outside bleach is getting to that fat without soaking for hours and hours.
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#2
When you tilt your head to the side, your eyeballs rotate so that the "top" stays oriented.
Want to be freaked out? Go look in a mirror and watch some stationary part of your eye, like a blood vessel. Then tilt your head and see your eyeball turn like a steering wheel.
Stephanie A Mutti 6 days ago
This is truly interesting because the eyeball act as a gyroscope so the top stays top, BUT we perceive through our eyes that our head has tilted. The brain,,, AMAZING!!!!
A dude who likes to drum 6 days ago
I noticed this a few years ago while brushing my teeth and thought it was super cool!
Kelly Scott 6 days ago
Wait till you have an inner ear infection. Then look in a mirror and watch your eyeballs snap from side to side. In between throwing up, that is.
#3
About 5% of our brain activity is conscious, and 95% unconscious.
That's not the creepy part.
The creepy part is that studies have shown the unconscious part of our brain making a decision up to several seconds before the conscious part thinks it's made a choice, and then retroactively justifying "why" with our conscious thoughts about it.
Breadcrumb. 1 week ago
Listen, if it's reminding my stupid self to breathe with out me thinking about it, I'm on board.
Virgil Blue 6 days ago
Also, the part of your subconscious tasked with spotting danger can also glitch during trauma and create all kinds of fear related problems you can't even remember the origin of. It tries to help you avoid danger, but trauma of all kinds make it flag everything related to keep you safe. But that means triggering the fight and flight response as soon as it is reminded of anything it related to the trauma. So fear of small spaces is easy to explain, but you can also end up with an unreasonable fear of f.i the colour red or even sleeping. And the weirdest part is that if the trauma was too much to resolve it can order your brain to lock away the memories making you baffled about why you get scared of benign things. Luckily there are effective therapies.
Nikki Sevven 5 days ago
I don't think it's creepy. The unconscious is doing all the heavy lifting here, integrating data and formulating a conclusion. It's still you, you know.
SkippityBoppityBoo 5 days ago
Having had various MRIs? I definitely do have a brain and found out a lot about the functions, whether or not it actually works is a whole different matter 😁
Fungus John 1 week ago
I've been aware of this for a while and I can feel when it's already made the decision
One of the coolest biology-related things we’ve learned in recent years is that your brain gets ‘washed’ to flush out waste while you sleep. In a nutshell, based on research conducted by scientists at the Washington University School of Medicine in St. Louis, nerve cells coordinate to produce rhythmic waves, which then propel fluid through dense brain tissue, washing it.
“These neurons are miniature pumps. Synchronized neural activity powers fluid flow and removal of debris from the brain,” says the study’s first author, Li-Feng Jiang-Xie, PhD.
“If we can build on this process, there is the possibility of delaying or even preventing neurological diseases, including Alzheimer’s and Parkinson’s disease, in which excess waste—such as metabolic waste and junk proteins—accumulate in the brain and lead to neurodegeneration.”
#4
Some may find it creepy i guess; maybe more... disturbing. Tinnitus can often be neurological rather than from physical damage, meaning you can be completely deaf and still have the ringing/buzzing in your ears. As someone who has Tinnitus, I've learned to filter it in day to day life, but it's hard to impossible below a certain level of ambient noise. Id quickly go mad if it was the only sound I could actually hear....
Nikki Sevven 5 days ago
There I was, thinking it was silent. Then began the tintinnabulation of the bells, bells, bells...
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Bored Sailor 6 days ago
Lucky people who can tune it out, have tried for over a decade now. Even headphones on I can still hear it but they do help.
Fire Singer 5 days ago
Sorry to hear that. :( I can tune it out during the day, and at night with a fan for white noise, but I can't wear earplugs to like block out my husbands snoring because then it's the only thing I hear and it makes me crazy.
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Frances Boyd 5 days ago
I am nauseous al the time but don't notice it until someone mentions it, same as with tinnitus,
#5
It's a classic but humans are born with their baby teeth and their adult teeth, the adult teeth just hang on behind the baby teeth until their time comes, which means that a toddler's face is like 50% teeth and the skull images you can find on google are very unsettling.
Zephyr343 1 week ago
And baby teeth apparently never come in. Our 7 month old has been trying to break her first teeth in for weeks
Stephanie A Mutti 6 days ago
Ours didn't get her first tooth until she was close to 12months... it will come, she'll be fine.
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#6
Finding out old scars reopen with scurvy haunts me.
GenuineJen 6 days ago
I don't have scurvy and my emotional scars open all the time.
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BoredPangolin 6 days ago
And yet, actual case of scurvy are on the rise in the US. 6% of the US population was deficient in Vitamin C in 2024. So, yeah. Gross.
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Meanwhile, the senior author on the paper, Jonathan Kipnis, PhD, stresses that it is “critical” for the brain to dispose of metabolic waste build-up.
“We knew that sleep is a time when the brain initiates a cleaning process to flush out waste and toxins it accumulates during wakefulness. But we didn’t know how that happens. These findings might be able to point us toward strategies and potential therapies to speed up the removal of damaging waste and to remove it before it can lead to dire consequences,” Kipnis said.
#7
Male and female genitals are made up of the same embryological components, just arranged differently, and with some bits growing bigger depending on hormone exposure.
WubiDubi 6 days ago
The clitoris is huge but mostly internal, look up a MRI scan of one. It's a real iceberg. It's a modified female p***s. The BP censor is going to run out of asterisks on my comment.
OhnoI’vebeencensored 6 days ago
Hey clitoris isn't censored? Heh, clitoris!
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#8
Your spinal cord is the same consistency as a banana.
Tyranamar Seuss 6 days ago
Says who? I've dissected spinal cords. They were not the texture of bananas. Nerves don't really feel like bananas.
#9
Everything in your house is completely covered by dead skin and is being eaten by something as we speak.
You also sleep in it :)
Sweet dreams.
OhnoI’vebeencensored 6 days ago
Not done me any harm, bar the occasional sneeze. I don't let stuff like this worry me.
UnclePanda 6 days ago
I'm more interested in the dust bunny ranch under the sofa. At night, they hold rodeos.
Giles McArdell 6 days ago
If you don't like this, you really don't want to watch the Mythbusters episode on p*o particles near toilets (Spoiler: they're not just near the loo!)
George Costanza 6 days ago
It's not the dead skin in your house you should worry about, that's natural. It's all the micro- and nanoplastics from all the synthetic clothes/fabrics/textiles/materials in your house that make up a huge percentage of the "dust", getting into your lungs, mouth, etc all day. THAT is the problem.
Blackmoon The Dragon 6 days ago
there are more cells of other organisms in yourself than your own cells.
What do you think, Pandas? Which of these facts impressed you the most? Which ones did you find the creepiest and why? Were there any that you already knew? What’s the most bizarre and impressive biology fact you know that wasn’t mentioned here?
Share your thoughts with all the other readers (and us!) in the comments at the bottom of this post.
#10
When you're in a plane at cruising altitude and lose cabin pressure, you have about 15 seconds of useful consciousness before hypoxia sets in. That's why they tell you to put your own oxygen mask on first - you'd pass out trying to help others.
I'm a pilot and this fact still gives me chills.
tom (bat/man) 1 week ago
yeah and the pilots are on a separate oxygen supply. the cabin has about 5 minutes supply so you can think about dying
Nikki Sevven 5 days ago
When you're instructing someone, it's incredibly fücking helpful in getting them to comply when you tell them the REASON for the instruction. I had this convo with one of my doctors prior to surgery when told not to eat or drink after midnight. The REASON is that you'll likely vomit under anesthesia, then aspirate the vomit into your lungs and bloody well dîe. I told him he should tell people why.
#11
When you sleep your brain gets power washed with spinal fluid!
#12
Not too happy with the fact that there’s a bunch of hollow tunnels filled with mucus exactly just right behind my face.
#13
It takes up to a year for all the organs to go back in the right place after being pregnant. Also, during a c-section, they kind of just mush everything back inside and it all eventually goes back to where its suppose to on its own!
CP 6 days ago
I watched my ex get a C-section and it is wild. My first got stuck coming out so the baby wasn't in the normal C-section spot. They cut her open, pulled out the organs and set them on a table, and finally they pulled my pride and joy out. Even crazier was she was awake the entire time. She doesn't remember a thing, but I was talking to her. They just put the organs back in a sewed her up. It seemed easy for the doctors. It was 2 am and a team of people showed up out of nowhere to do this. Doctors are typically awesome!
Laura MG 6 days ago
I had a C-section, doc asked me if wanted the curtain dropped when he delivered my daughter which got a resounding NO. Later asked my husband how he handled the procedure and he said "no worse than gutting out a deer" 🫤
Load More Replies... WubiDubi 6 days ago
C sections are becoming more common because they are less risky. But the woman's body loses the normal 'you;ve given birth' oxytocin signals and the baby bypasses good bacteria exposure in the mother's birth canal. Hah, v****a. Is the BP censor awake?
CloPotato 4 days ago
Isn't it common practice everywhere now, to rub a q-tip in the grand entrance hall and then on the baby's lips to get these bacteria transmitted?
Load More Replies... #14
Babies grow and shed hair in the amniotic sac, which by the end of pregnancy is filled with.. old hair.
Funderthuck 6 days ago
my son was born bald and didn't really grow hair until he was a year old, does this still apply?
Purple Gurl 6 days ago
Probably where the theory of being born cursed as a werebeast came from
#15
Pretty much all the different fluids your body can leak. My wife got a poorly placed epidural (2 natural births and finally caved on #3 and it got messed up and was awful) and was leaking spinal fluid. Read a story about a guy who had a runny nose, but it was brain fluid! So now I feel like I'm an old truck and I'm just going to start waking up with random leaks under me :D.
Emma London 6 days ago (edited)
My friend started to leak brain fluid from her nose after having a cold, it turned out that she had a hole between the brain and nasal cavity. And she only went to a doctor because she couldn't sleep due the fluid ending up her throat and lungs when she was laying down.
Fire Singer 5 days ago
Holy cow! Can that cause damage at all? I can't even fathom leaking brain fluid.
Load More Replies... #16
Your brain can’t actually feel pain.That’s why surgeons can perform brain surgery on awake patients. You can feel pain in your skin, skull, and meninges but the organ that interprets pain itself feels none. It’s unsettling to realize the thing that screams “OUCH” can’t experience it at all.
#17
When were in an unfamiliar environment, we sleep with half our brain at a time kinda like sharks and that's why we wake up easier.
Zephyr343 1 week ago
I know some people that are awake with zero brains. Amazing they walk amongst us
Greymom 1 week ago
And lots of them are “ leading “ our country and running our highest court!
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Courtney Laws 5 days ago
That's true for me...I don't sleep well the first night in a strange place.
David Paterson 1 week ago
That needs checking. I do know that hearing doesn't stop when we sleep. An unfamiliar noise will quickly wake us up.
#18
Some women can actually feel pain when they ovulate. It’s called mittelschmerz, a German word that means “pain in the middle.
Min 6 days ago
My wife was. She doesn't experience it and thought I was nuts until I showed her proof online that it's not just me.
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WubiDubi 6 days ago
Unlike the brain, the cervix can feel pain. Despite the medical organisations (when they were all men) saying different for centuries.
George Costanza 6 days ago
The cervix isn't involved in ovulation. That's the ovaries.
Load More Replies... Bad Alchemy 6 days ago
Gotta hand it to the Germans. They have specific words for things that only exist as lengthy descriptions in other languages.
George Costanza 6 days ago
It's the actual rupture of part of the surface of the ovary so it makes sense.
Words From Infinity 1 week ago
“Some women feel,” according to some man. Thank you for mansplaining our bodies to us. So helpful.
#19
When having an operation doctors move your organs around to get to where they need to go. Once they are finished they dont put them back. They return back all on there own. Same with being pregnant. If you have a baby in there it moves your organs out of the way to make room. Once you give birth they start to realign back into place on there own. Like they remembered where they were.
Emma London 6 days ago
I'm sure the doctors put them back. Not in their original positions, but still back! And even stich you closed afterwards!
#20
Your internal organs itch; your brain chooses to ignore the sensation!
George Costanza 6 days ago
I think you just mean that organs have nerve endings (true) which the brain mostly ignores the signals from unless there is significant damage to warrant warning you about. Itching is a specific sensation we feel. Organs don't "itch".
Penelope Orange 6 days ago
I'm curious to know how this is a known thing. Is an itch, especially on an internal organ, something that can be identified? I may end up in a rabbit hole with this one.
Earonn - 6 days ago
I guess some poor guy has a brain that doesn't filter out the itch....
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#21
You can be internally decapitated. The neck breaks and your head literally is only connected by soft tissue.
Chich the witch 1 week ago
Currently watching an episode of Bones where this was the cause of death.
#22
Some people are walking around with 3 or more kidneys because when you get a transplant, unless medically necessary, they leave the old ones in there.
Lazy Panda 2 6 days ago
I'm trying to work out of I have more or fewer than the average number of kidneys in a human.
#23
There are tiny mites that live in your eyelashes all the time.
George Costanza 6 days ago
Not just your eyelashes. All over your facial skin. They eat the sebum from your hair follicles. Their little butts stick out onto your face. I see them in skin biopsies all the time.
Laura Gillette 6 days ago
Aren't they beneficial? They eat excess sebum and dead skin cells. No?
#24
Young children can fully regenerate the the tip of a finger if it is severed or amputated.
Apparently the younger they are, the more active stem cells the have to promote this process which we adults lack.
Stephanie Did It 1 week ago
A young relative, about 4 years old, picked up an electrical cord plugged into an extension cord and put the joined plugs in his mouth. He somehow survived the shock, but his entire lower lip was burned off. It took a year, but that lip grew back 100%.
Nea 6 days ago
This comment is the hardest thing on this post which is supposed to shock me.
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Stardust she/her 6 days ago
One of my friends chopped off her finger when she was a year old, it was able to grow back completely along with a bit of surgical help
Eileen Gormly 4 days ago
Or a toe! That happened to me. Lost the tip end of my little toe in an accident and a few years later me and my family were all "what, which foot?" and couldn't remember and couldn't figure it out as I had all my toes in full. Doctor had to tell us about this.
#25
There's a fun little thing called Prions, which are a incorrectly folded protein. It has given us some fun diseases, like the Mad Cow Disease, Zombie Deer Disease, Kuru, and FFI (Fatal Familiar Insomnia). While these diseases are either genetic or spread by eating tainted meat, FFI has a fun little cousin called SFI, or Sudden Fatal Insomnia.
While extremely rare (only 3-5 known cases world wide, AFAIK), it can happen to anyone. Suddenly, in your late 30's, you start to lose the ability to sleep. Sleeping pills and such work in the beginning, but over time they no longer do the trick. Once you can no longer sleep (which can take anything from a few months to a few years), you only have a few weeks to live before your body breaks down.
Fire Singer 5 days ago
What about in your 40's? I've been blaming perimenopause but now...feeling a bit like a hypochondriac after reading this list!
Norma P 4 days ago
I was working in a neuro ward as care taker, we had a case of FFI, the guy was literally playing tennis in his bed while in light sleep phase. He stayed 3 months with and unfortunately died of exhaustion, he was emaciated and his brain couldn't function for simple bases actions like swallowing food or water. His young adults kids had 50/50 chances to develop the pathology during their lives, they could have been genetically tested but all 3:of them had refuse. The staff was particularly emotional about this patient and his family when he died. I ll never forget him.
WubiDubi 6 days ago
They just discovered how to make (and self banned themselves) from making mirror proteins. They are extremely dangerous as humans animals and most smaller living things are not evolved nor designed to deal with them and they could mess up simple biological processes and cells. This is not molecules which have cis and trans mirror versions. Mirror bacteria are even scarier.
#26
The feeling in your stomach when you go down on a roller coaster is your organs lagging behind your body.
Woof Yo 1 week ago
Your organs are "shifting", but still inside your body. "The rush on a roller coaster comes from a mix of your body's fight-or-flight response (adrenaline surge, pounding heart, faster breathing), G-forces creating sensations of weightlessness or heaviness, and psychological excitement from the illusion of danger in a safe setting, all of which stimulate your nervous system and trigger neurochemical releases like dopamine. The famous "stomach drop" is your organs shifting due to rapid changes in acceleration, especially during negative Gs (weightlessness)"
#27
If you’ve ever worked in an OR, the smell of cauterization is similar to cooking steak/pork. We’re all literally walking meat sacks made of electrical signals.
Stardust she/her 6 days ago
I’ve had a few wounds cauterised, I’ve never been able to be near meat being cooked without remembering that awful smell
Auntriarch 6 days ago
So true! They tried to tell me it was the machine ionising.... Nah it was my eyeball frying
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#28
Your body produces cancer cells all the time.
WubiDubi 6 days ago
The body is perfectly equipped to k**l them before they spread much, until it isn't. You need a healthy body so your immune system has everything it needs and less inflammation so excessive cancers do not occur. Good luck with that now that shops mainly sell ultra processed foods.
Load More Replies... #29
I work in an emergency room. The sheer amount of patients that come in with literal maggot infestations is, well, disturbing.
Norfolk and good 6 days ago
Maggot therapy is still used today to clean some wounds. They are very effective at removing dead tissue and cleaning wounds.
Emma London 6 days ago
Many alcoholics, diabetics' and d*ug users' nerve endings have died, so they don't feel their wounds. They also can have so stressful life situations that checking their limbs isn't a priority. Add unhygienic surroundings and voila, maggots.
#30
Your BRAIN is what makes your skin prune in water, your skin does NOT do it automatically.
Words From Infinity 1 week ago
I’ve noticed that I don’t prune anymore, no matter how long I soak. What’s is all mean, jelly bean?
David Paterson 1 week ago
That doesn't make sense? I've heard that it's the skin swelling up when wet (osmotic pressure) which makes the skin to big for the organs beneath, hence the wrinkles.
Ace 1 week ago
From webmd: "When you soak in water, your nervous system sends a message to your blood vessels to shrink. Your body responds by sending blood away from the area, and the loss of blood volume makes your vessels thinner. The skin folds in over them, and this causes wrinkles. It’s not fully clear why this happens, but scientists believe this process evolved so you can have a better grip when your hands are wet."
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Saltypepper 6 days ago
Maybe that's why the brain looks strangely like ppl having coites
Load More Replies... #31
Your intestines and other organs are always squirming and moving around but your brain ignores it.
#32
Probably posted already but there are a few people born with all organ asymmetries on the opposite side (pancreas, liver, aorta position, etc.). This isn’t creepy until you try to diagnose appendicitis .
Joshua David 6 days ago (edited)
Remember when Angelinas character (girl, interrupted)grabs a nurse and threatens to stab the aorta in the neck. Lol
#33
The ovaries aren’t physically connected to the fallopian tubes. The eggs shoot out into the fallopian tubes. This also means that certain other things (👀) that may go into the fallopian tubes ultimately just swim out the ends and end up floating around in the abdominal cavity.
#34
Evolution hasnt fully ironed out the whole walking upright thing. Its literally bad for your hips and back.
CloPotato 4 days ago
I studied paleontology before going for another degree, and I am regularly pissed about this. We're going too fast and have been so for a while, permanent bipedy is stupid. Yes I have knee, hips, ankles, back problems and yes being upright permanently plays a part in stuff getting too low (if you have hemorroids, you know what I mean). We're chimps and bonobos' arrogant c*******d cousin.
Anyone-for-tea? 1 week ago
If that’s true, why doesn’t chemo they say sitting is so bad for us?
#35
That you can live without basically half of your organs. By that I mean 1 kidney, half a spleen, 1 lung, etcetera. Not going to be a great life but you can live.
Kelly Scott 6 days ago
Look at Trump. Less than half a brain and he still walks and talks. Unfortunately.
Remi (He/Him) 6 days ago
And you can cut away half of your liver and it grows back, but only once
Emma London 6 days ago
You can also live with only half a brain, if your brain stem is intact.
#36
The “baby smell” that young babies have generally fades around two years of age. Coincidentally this is also around the time that babies skull finishes fusing together to get rid of the soft spot, leaving scientist to believe that what you’re actually smelling is baby’s brain.
Geobugi🇰🇷🇰🇭 6 days ago
I would like to meet the scientist who came up with that 💩. The smell is caused by hormones, underdeveloped glands and skin. Has zero to do with the soft spot
#37
After the placenta is delivered you have a dinner-plate sized wound in your uterus.
#38
Unborn babies can cry inside your womb if you are pregnant.
patricia patricia 6 days ago
If there's an unborn baby inside your womb you are definitely pregnant.
CP 6 days ago
I love it when people unnecessarily add superfluous information to stories.
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Harry Gondalf 6 days ago
They also cough, sneeze, urinate and sometimes m@sturbate. Or appear to-- playing with g3nit@ls, having s reflex spasm after doing so for a while... I saw an ultrasound video of all these behaviors. Or.... maybe it was AI.
Pandemonium 1 week ago
So I've been "taking care of my own needs" since before I was born? Industrious!
Load More Replies... #39
Brain matter smell is hella gross. Source: I'm a paramedic.
George Costanza 6 days ago
Every organ has a smell. Fresh brains (I've done many autopsies) never smelled particularly bad to me. Worst is the colon when ruptured (obviously). Otherwise the liver and kidneys have distinctive smells (just like animal ones). Most things smell like the blood they're often covered in, sort of a sicky-sweet metallic smell. Certainly doesn't make me crave organ meat for dinner, though.
Robert Trebor 1 week ago (edited)
I'm told it looks like oatmeal when it gets scattered, by say, a shötgün blast. I do not want to ever see this for myself.
Chich the witch 1 week ago
if your head gets hit with enough force it can crack like an egg. I don't find gore in horror movies very frightening any more.
Bad Alchemy 6 days ago
Generally speaking, most creatures smell better on the outside than they do on the inside, even the very smelly ones.
Nea 6 days ago
I am a vegetarian but my family enjoys cooked lamb and goat brains. I never experienced any bad smell in kitchen though.
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#40
When you gain body fat, as much grows internally as externally.
George Costanza 6 days ago
It can depend on the person, each person carries body fat differently. Apple-shaped folks (beer bellies) often carry more internally, pear-shaped folks more externally. Extremely obese will simply have massive amounts of both.
#41
When a bone saw cuts into a preserved human skull it smells frighteningly similar to cool ranch Doritos.
Yes, I still eat cool ranch Doritos.
GenuineJen 6 days ago
Now I wonder if the person who developed cool ranch Doritos flavor was inspired by preserved human skull smell? Chicken or the egg?
Tyranamar Seuss 6 days ago
People just make this s**t up. Again, been around a skull being sawed. Does not smell like Doritos.
Saltypepper 6 days ago
Well I'm never eating cool ranch Doritos again.i may have to even rethink ranch dressing..
#42
Human bones stay wet for a very long time when left to dry naturally. (I worked in an osteology lab in college).
GenuineJen 6 days ago
I try to lick all of my bones on a regular basis to keep them from drying out.
Nikki Sevven 5 days ago
Pro Tip: When you're done licking, occlude the moisture with a light coating of extra virgin olive oil.
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#43
Bones aren’t naturally white. They can be cream, yellow, brown, red, or even black depending on minerals, medical conditions, or environment. There’s a real case where a woman’s bones were black, and it was only discovered after an accident during surgery. Most people never know their bone color unless bones are exposed. So you can have black bones for all you know 🤷♀️.
Greymom 1 week ago
Seen and participated in tons of orthopedic surgeries. Cream is the “ go to “ color. Can’t say those other colors don’t ever happen but in nearly 2 decades I’ve never seen it.
George Costanza 6 days ago
Never seen any other color than cream/off-white, sorry. And i've seen lots of human bones.
#44
That when you twist your wrist, your forearm bones overlap. It's biomechanically normal, but it's kinda gross to see in simulation.
#45
Look at anything around you. Your tongue knows what it would feel like to lick it.
Nikki Sevven 5 days ago
Having just looked at my lampshade, mousepad, and computer screen and instantly knowing what they would feel like to lick, I'm baffled as to how this is possible when I have never licked any of the three. Why would my brain know this? I wonder if there's an evolutionary reason. I mean, of course there is, but what is it?
CloPotato 4 days ago
My guess is that it can be useful to know this, could have played a part in identifying food (including from afar) at some point and avoid the ones that seemed to have gone bad, or avoid enthusiastically biting stones. Maybe it's also a layer of security: better be able to imagine what it feels like to lick a boar, than to meet a ridiculous demise.
Load More Replies... #46
Your stomach is full of warm vomit.
You can thank another reditor from last week traumatizing me with that one...
Val 1 week ago
Mine is acid, until the reflux happens and it turns into vomit.
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#47
Your skeleton isn't inside of you. You are inside your skeleton, since your brain is inside of your skull.
Chich the witch 1 week ago (edited)
We are essentially a blob of fat driving around in a meat powered wet skeleton
UnclePanda 6 days ago
I think of my body as my pudgy spaceship for navigating this particular space time continuum.
#48
I have three:)
1.Ribs can regrow. It’s a problem they have to watch for if ribs are being removed for medical reasons. The tiny bud left behind on the rib cage starts a new bone.
2.Humans typically have one spleen, located in the upper left abdomen, but it's relatively common (around 10-20% of people) to have extra, smaller spleens (accessory spleens or splenunculi) due to developmental variations or the body's natural ability to regenerate spleen tissue after injury, a process called splenosis. I’ve read cases of people having six. Unless you have surgery near them, they rarely cause issues and you are unlikely to ever know they are there.
3.Children under a certain age do not have knee caps.
Ace 1 week ago
1. Ribs will not regrow into ribs. Normal bone healing process can create unwanted growth. 3. Yes, they do. A baby is born with knee-caps made of cartilage, which turns into bone as the chid grow, normally by age 10-12.
Facefullopubes 5 days ago
My kneecaps never completely formed, my left especially. I have a little gap in the middle which opens and closes as I bend my knee.
Load More Replies... UnclePanda 6 days ago
If you play words like that in Scrabble, everybody else will quit.
Load More Replies... #49
We almost all have eyelash mites that are a type of arachnid. Spiders live in your eyes.
Voidified 1 week ago (edited)
An arachnid is not always a spider, scorpions are arachnids and scorpions aren't spiders
Alex Fountain 6 days ago
… so you’re saying I have scorpions in my eyelashes?? I’m pretty sure that’s worse, not better (/jk)
Load More Replies... #50
That if the chemicals expressed by the pancreas are blocked from the digestive tract (by gall stones) those chemicals just eat the pancreas itself.
Savannah greenleaf 1 week ago
Wouldn't gall stones block the gallbladder not the pancreas? I imagine it could be blocked but not by that.
GenuineJen 6 days ago
Gallstones are made in the gallbladder and can travel and get lodged in the pancreatic duct (gallstone pancreatitis).
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Mary Kelly 6 days ago
a few things...bile behaves like a detergent and helps in the digestion/absorption of fats...bile is produced in the liver, stored in the gallbladder, and released into the digestive tract when a fatty or spicy meal is eaten...gallstones form for a variety of reasons...when they do, they are quite painful and often require a cholecystectomy (removal of the gall bladder)...the gall bladder and pancreas share a common duct for releasing chemicals into the digestive tract, if a gall stone gets lodged in that duct (the common bile duct), the chemicals produced by pancreas, like bile, will be unable to pass through this duct into the digestive tract..this leads to inflammation of the pancreas, called pancreatitus...gallstones are only one cause of pancreatitis...IMPORTANTLY, THE CHEMICALS PRODUCED BY THE PANCREAS DO NOT EAT THE PANCREAS...the immune response can cause scarring, infection can set in, etc.
Nikki Sevven 5 days ago
The gall bladder makes a difference too. My daughter had her gall bladder removed at 19yo, and she really has to watch how much fat she eats in one meal to avoid gastric distress.
Load More Replies... #51
Well its not really about a living human body, but like literally a body.
Apparently a decomposing human body emits a "sweet scent", the type of overwhelmingly sweet scent that makes you instantly nauseous, even tjose that have often smelled it get nauseous by it, many thta smell it for the first time often throw up.
Thing like eating way too much sugand and getting a stomach ache, but then all that sugar is a scent in the standing air.
Oxford Ranch 6 days ago
The smell of “death”is one that you won’t soon forget. Used to own an auto wrecking yard. Some of the things people did to commit their own death always amazed me.
CloPotato 4 days ago
The post got me curious, is the scent actually sweet? I did not imagine it that way.
Load More Replies... #52
I'm always amused that the colour purple doesn't exist, our brains invented it.
Purple is not violet as purple is a mixture of red and blue where as violet has a definite range of wavelengths.
When our brains see blue and red, which are at opposite ends of the spectrum, it sort of joins these opposite ends together and invents what we see as purple.
BarfyCat 6 days ago
How we perceive color is also cultural. I learned this while teaching English to immigrants. My Nepali students could not differentiate between purple and brown.
Nikki Sevven 5 days ago
I recall seeing a video on how the perception of color developed differently in different cultures. It was fascinating. Link in next comment.
Load More Replies... David Paterson 1 week ago (edited)
As a red-green colourblind person, I claim that there is no such colour as "purple". What to most people appears purple, appears to me as "dirty blue". The closest real colours to this fictitious purple are "hot pink" and "magenta".
Val 1 week ago
My BIL is exactly like you. I will have to ask him how he sees "purple."
Load More Replies... #53
Human cheekbones evolved to be thicker to withstand punches to the face better.
Mary Kelly 6 days ago
Hey LaMarck, evolution doesn't cause traits to be developed...mutations do....the natural selection then determines whether those mutations are advantageous, neutral, or disadvantageous in a given environment...and the only advantages and disadvantages that matter are those involved in reproduction and getting your offspring to reproduction...
Slapdash1 5 days ago
Stronger bones in the face would increase fitness and give and individual an advantage.
Load More Replies... #54
Our bodies replaces most of its cells over time, yet our fears nd trauma can stay unchanged.
Stardust she/her 6 days ago
Well the braincells cannot die or be replaced as easily so you are still the same you just with a different meat exterior
#55
Your bladder is connected to your bellybutton. There's a condition that can cause your bellybutton to "open" and leak pee.
George Costanza 6 days ago
Urachus. If persistent after fetal development it's a urachal tract or cyst.
Saltypepper 6 days ago
Oh now i get it that's why it feels like a string 🧵 is being pulled from my belly button sometimes when i pee
#56
Galen (c.129–c.216 CE) would dissect piglets live , and their screams bothered him . He found that by running his knife along both sides of the wind pipe he could sever a nerve that made the screams stop. I mean the pigs were still screaming , but their vocal cords made no noise .
And that's how we learned about the recurrent laryngeal nerve and its function.
Scarlett O'Hara's Ghost 1 week ago
You think? As awful as this sounds, and it is awful, science advanced by doing it helping us to understand the human body
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CP 6 days ago (edited)
Yes! Punish them forever! Theists are bloodthirsty!
Load More Replies... #57
The fact your eyes are invisible to your brain and if they ever found out they existed they’d destroy them!! Can happen if you get a strong enough eye infection and you can say goodbye to your sight forever!! 😳.
Kirsten Kerkhof 1 week ago (edited)
I have herpes virus in my eyes (like the canker sores people get around their mouth, but mine are IN my eyes). Every 6 months or so, when my immune system dips a bit, it flares up and I need strong Prednison eye drops to suppress the infection. It started some 20 years ago, and by all means I ought to have been blind for years. Thank God for modern medicine.
Ace 1 week ago
These get worse the further down the list we go, as usual. This is just so wrong, the eyes have a kind of immune system separate from the rest of the body, is all. The idea that the one could somehow "find out" about the other as if they're intelligent thinking things is just stupid.
UnclePanda 6 days ago (edited)
The downvotes apply a titration effect that (sometimes) represents the level of disbelief among the posters, pushing those entries down over time.
Load More Replies... Mary Kelly 6 days ago
oh boy....so many things wrong with this...your eyes and your brain regularly communicate...your brain is very aware of your eyes...and the brain doesn't destroy anything...in the case of infection, either the infectious agent or the body's immune system will damage the eye...but, the brain plays no role in either case
George Costanza 6 days ago
Not invisible to your brain, invisible to your immune system, which your brain doesn't control in any way.
Anyone-for-tea? 1 week ago
It’s the same with your heart I think? I’m sure my cardiologist told me that my immune system has malfunction due to a virus and that’s why my body keeps attacking it daily unless I inject a d**g to stop it. I don’t know about the lungs, as they’re also affected, maybe I’ll ask next time I go!
#58
Every time you smell someone else's fart, you are literally inhaling bits of their fecal matter.
Ace 1 week ago
Rubbish. It's a combination of gases, not some sort of miasma of suspended solids particles.
CP 6 days ago
I remember people not understanding masks during Covid saying the same thing.
Load More Replies... George Costanza 6 days ago
This isn't true. You're smelling gases like H2S, not solid material.
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What do you think ?
Norfolk and good 6 days ago
I've got one. It's possible for faecal matter to be vomited. If the bowels become obstructed then the faecal matter will come back the way it came.
patricia patricia 6 days ago
People, if you don't know what they are and you want to be able to sleep at night, DON'T look it up. You've been warned.
Load More Replies... Tyranamar Seuss 6 days ago
Once again we have a list of "facts" that have not been fact checked. So useless.
Norfolk and good 6 days ago
I've got one. It's possible for faecal matter to be vomited. If the bowels become obstructed then the faecal matter will come back the way it came.
patricia patricia 6 days ago
People, if you don't know what they are and you want to be able to sleep at night, DON'T look it up. You've been warned.
Load More Replies... Tyranamar Seuss 6 days ago
Once again we have a list of "facts" that have not been fact checked. So useless.
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