We all know that the human body is very complex.
But even with all the recorded and available science, there are certain things about our bodies that continue to elude us, and medical experts can still get stumped about how the human form reacts unpredictably.
Curious to discover some of the mystifying yet unsettling truths about our anatomy, Redditor Hot_Banana_Ice-cream asked:
"What is a creepy fact about the human body?"
Now, observe this.
Visceral Reaction
"If you wear glasses which vertically inverts your vision long enough, your brain will correct it, and you'll see things normal. But when your take those glasses off, everything will look upside-down again until brain recalibrates again."
– shadow29warrior
Brain Assessment
"Our brain filters out a lot of what we see along with just straight making sh*t up based on extrapolation."
– AdmiralClover
The Experiment
"My favorite is the blind spot at the center of each eye, where the optic nerve is."
"A lot of people don't even know it exists, and even if they do, it is bigger than people often think."
"And it's also really easy to demonstrate to people if you know how. It's one of my favorite bar tricks - all you need is a pen and a napkin to draw a cross and a dot."
https://thebrain.mcgill.ca/flash/capsules/experience_jaune06.html
Alternate demo: https://faculty.washington.edu/chudler/chvision.html
"Edit: If it doesn't work, you're doing something wrong - not getting close enough, the image is too small on your phone, you're not closing the correct eye or not keeping your gaze fixed on the cross."
"It isn't because you don't have a blind spot. Unless you're a squid, you have a blind spot. All vertebrates have them."
– M0dusPwnens
The workings of our innards are out of this world.
The intestines are covered by a double "fleece" of peritoneum. See it like a blanket.
When your intestines get damaged for whatever reason, this blanket starts moving out of itself and crawling upwards towards the place which has the injury. It will stay there until the injury is recovered. And then move on again.
Maybe not the most creepy fact, but definitely interesting in my opinion.
Do Do That Doo-Doo
"We don't just have one anal sphincter. When poo comes along it passes another inner sphincter which isn't under voluntary control."
"Sensory cells can detect whether you're about to pass gas or solid. From toddler age on, you can decide to go or not to go. If the time isn't right (e.g. at a friend's house or no toilet nearby), the inner sphincter can push the poo back and store it there for later."
"That's why sometimes if you need to do a number two but don't go, the urge goes away after about 20 minutes later. (But seriously, go if you can. Constipation risk.)"
"Gas can't be pushed back so easily, so we sometimes toot by accident when moving or engaging the core."
– bmb00zld
The Same Lining
"The inside of your cheek and your rectum are lined by the same type of tissue."
– GasTsnk87
You don't always have control of your body.
Taste Of Curiosity
"The front of your tongue is curious, constantly patrolling, and autonomous. It chases the dentist around your mouth and you aren’t even aware of it. So embarrassing and weird/creepy."
– AdeleBerncastel
Licking Partner
"In dental school, I learned this fact when practicing taking impressions on each other. My buddy’s tongue kept licking my finger. I asked him to quit licking me, and he was like 'I can’t help it!' And then we switched places and my tongue wouldn’t leave him alone.And for those of you that don’t think your tongue does this: some of you are right. But the majority of you just think your tongue is behaving, but it is all over the place without you even knowing."
– recoveringcultmember
Dancing With The Dead
"Bodies will move as they’re coming out of rigor. I’ve been bumped by a few (I’m a coroner). Bodies can also make sounds as the remaining air/ gas leaves… 2am in the morgue and I thought I was in COD zombies."
– Jar-JarShotFirst69
Wonder of wonders.
The Only Way Out
"When you get laser tattoo removal the ink doesn’t disappear, you pee it out."
"Your body’s immune system breaks down the pigments of ink and it flows in your blood stream, gets processed through your kidneys, then you pee out the ink."
– Fine_wonderland
Our soul-containing vessel is a mysterious wonder unique to us.
We should do whatever it takes to take great care of it because it's the only one we've got.
If we don't, they might turn on us.
Gut feelings exist for a reason.
There may be no substantial evidence to back what people believe to be emphatically true, like, say, the afterlife or the existence of a higher power.
But who are we to deny them their faith in the existence of something?
Curious to hear what some of these beliefs might be, Redditor btsao1 asked:
"What is something you strongly believe in but don't have evidence for?"
How well do you know your relatives? These people had gut instincts they couldn't shake off.
Grandpa's Double Life
"My grandpa had a second family. I never knew him as he died before I was born, but my mom would talk about how he'd occasionally disappear for up to a month at a time and my grandma never once asked why because he said it wasn't her business (this was like the 50s and 60s). My mom told me that she'd occasionally have this dream where he had a second family and I think it's because deep down she suspected it."
– Fournote
It Can Never Be Revealed
"My wife's cousin's husband is an undercover CIA agent."
– tecg
Family History
"Kind of related but my mum thought she wasn’t related to her brothers as she didn’t look anything like them. Obviously my grandparents told her she was just paranoid."
"Years later we find out that my gran had an affair (my grandpa knew) and my mother was the result. This came out many years after my grandpa and grandma had died and that my mother and my siblings all had another family, her dad had died but we were living 10 doors away from one of her new siblings."
– ItchyPlatypus
People propose the idea of living creatures still out there among us.
They're Out There Somewhere
"That the Tasmanian Tiger is not extinct. Great swathes of Tasmania are largely uninhabited and still heavily forested . People wander a few metres off a track and are never seen again so dense is the bush. So my old romantic heart hopes that Tigers are still out there."
– 1999falcon
How We Came To Imagine Dragons
"I'm convinced that the myth of dragons in the middle ages originates from early findings of dinosaur fossils. It simply seems like a logical explanation to me, but I have not the slightest evidence for this theory."
– Mission-Access6314 ·
Otherworldly Beings
"That there's aliens out there. There's millions of galaxies, planet and we only discovered 1 and not even fully with the oceans being 10% or something. Even if we are the only ones (super unlikely) that would be even scarier if its just us. I wouldnt doubt advanced aliens would avoid the ghetto planet or be able to disguise perfectly as a human (and human eyes are limited there could be layers of life forms that isnt visable to our eyes)."
– AccomplishedCandy325
The Fungus Among Us
"That mushrooms are fully conscious. They help forests, they can communicate, they take over bugs brains and have them walk to a place the fungus wants and then kill it, they are older than any other plants/animals, and not to mention the insane effects of psilocybin!"
– chazmosaur
Dopplegangers
"There are clones, specifically human clones, alive right now. With the advances we made in that field in the 90’s with dolly the sheep and all that stuff there’s no way that some group of people didn’t take it a step further and create a clone human."
– Tornlinftw
If you know, you know.
The Sense Of Void
"I had an identical twin who never made it to be visible on ultrasounds. There's no evidence, just the subjective experience of the hole in the world where someone isn't."
– vewltage
We're All In This Together
"Everyone is delusional, some people just to a higher degree."
– coastermarioguy
For Good
"Being a good person is worth the trouble."
– DiarrheaButtSauce
Every Jekyll Has Their Hyde
"i believe that every single person in existence is capable of doing unspeakable things even if they don’t know it themselves and even if they never actually do."
– liteAvvikande
Graduation Theory
"that U.S universities lie about their graduation rates (the percentage of students that actually finish and graduate with a degree)"
– wayne8827
What We Eat
"Cambell’s Chunky brand soups and stews are really just dog food with extra spices."
– OrchidBest
I believe in ghosts. I believe that the departed exist on another plane.
But as much as I believe in the fact that there are apparitions and spooky specters out there, I really hope I never see evidence of their existence.
Because who has time for that?
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The world is a cool place. So much is happening at any one second here on our planet earth, that at any moment there are so many cool things happening that you don't even know about.
But when you do know about it, it makes life that much more rich and interesting, and sharing that fact with others can bring them into that fold.
Redditor Not_a_Replicant_ asked:
"What's a cool fact you think others should know?"
Here were some of those facts.
Blood In The Water
"Human's ability smell petrichor (smell of wet earth from rain) is greater than a Shark's ability to smell blood in water."-issaparadox
"Wiki says: The human nose is extremely sensitive to geosmin and is able to detect it at concentrations as low as 400 parts per trillion. Some scientists believe that humans appreciate the rain scent because ancestors may have relied on rainy weather for survival."-broxae
Your Anatomy Literally Doesn't Match
"Muscles do not develop the same in everyone and their exact origins/insertions can differ between people. In some the biceps have three or more heads, as opposed to the normal two."
"Some muscles are entirely absent, such as the psoas minor (found in about 40% of humans) and the sternalis (only 7.8%)."-Ruffled_Ferret
Poisons In The Air
"Acacia trees were shown to send chemical signals to other trees that they were being overgrazed on, causing the other Acacia trees to increase the production of a specific chemical that would kill the animals overgrazing on them."-RustyCopal
"DMT is found in many different types of grass, even. It is found naturally occurring in way more places than people realize, but you'd need quite a bit of grass to extract enough for consumption lol"--Psychonautics
These facts may make you stop and reexamine more of the things you encounter on a day to day basis.
Feed The Dogs--Tuppence A Bag
"Dogs that are slightly underweight live an average of two years longer than dogs that are slightly overweight."-Holybull79
"Scientists also found that mice who were fed all their calories during a single feeding lived longer than those who were fed the same amount of calories but broken up throughout the day."-Lurkay1
Aeronautics
"I always find it amazing that the first flight and first moon landing essentially happened within 65-70 years of one another."
"Also a modern day iPhone has more processing power than the entire computer set up NASA has for that mission."-AmerisaurausRex
"Eugene Aldrin, the father of the famous moon landing astronaut Buzz Aldrin, not only witnessed the Wright brothers' first flight but also went to see his son land on the moon in his lifespan. We've been quick!"-cfitzi
Mr. Sandman-Send Me A Dream
"In the pineal gland in your brain, over time it will start to form tiny calcification, little mineral buildups. There is no known function for these but scientists named it corpora arenacea also known as dream sand."-jimbo-g
"René Decantes believed it was where our rational thought comes from. And possibly where our soul hangs out. (I think the second part is a pretty interesting thought)"-HalpOooos
Defeca Spacea
"There was a phantom poop on an Apollo mission. A poop, floating around, that none of the astronauts said was theirs."-chalk_in_boots
"I'm not in a position to look them up at the moment but the transcript of the conversation is amazing."-stierney49
"https://www.hq.nasa.gov/alsj/a410/AS10_CM.PDF page 416"-ACERVIDAE
Or they could simply come to mind one day and bring you a smile you've been needing.
Wrong Or Wright?
"They took a piece of the original Wright flyer to the moon with them on Apollo 11. Also, the picture taken of the Wright flyer during the famous first flight was taken by someone who had never seen a camera before that day."
"That was the first photo he had ever taken. The photographer's name was John T. Daniels. As others have said, all he did was press a button to activate the shutter."
"Having been his first time seeing a camera and his first time seeing an airplane flying, I still think that's pretty mind-blowing."
"Later that day, while retrieving the aircraft after the 4th flight, a gust of wind flipped the plane over. Daniels was caught in the crash but uninjured, while the plane was completely destroyed. Daniels would go on to brag about being the first man to survive a plane crash."
"Unfortunately, the Wrights would eventually experience the first fatal airplane crash too, on September 17, 1908. Thomas E. Selfridge was a US Army lieutenant who was flying with Orville Wright to look into potential military uses for aircraft."
"During the flight, one of the propellers broke apart, causing damage to nearby control structures on the aircraft. Orville did a commendable job controlling the aircraft, but it still crashed nose-first, killing Selfridge and severely injuring Orville."
"An airfield in Michigan was named after him, and you can see a piece of the broken propeller on display at the National Museum of the United States Air Force."
"If wikipedia links aren't enough for you, I highly recommend Birdmen: The Wright Brothers, Glenn Curtiss, and the Battle to Control the Skies, by Lawrence Goldstone."
"It goes much deeper into the Wright Brothers, their bitter rivalries with other aviation pioneers at the time, and the legal battles that would follow their success for decades to come."-dog_in_the_vent
One Fish, Two Fish
"The Devil's Hole Pupfish!!! It's a critically endangered fish, measuring about 1.2" (30mm) they live in an isolated body of water in the Devils Hole in Nevada. The water temperature is consistently 91 degrees (33*C), which is very warm for most fish."
"Devil's Hole is a water filled cavern stretching into a rocky hillside at an elevation of 2,400 ft, (730m) Devil's hole is over 430 feet deep (130m) and connected to a massive underground aquifer below that- but the Devil's Hole Pup Fish only occupy the upper 80ft of Devil's Hole. It gets much much smaller than that!"
"They primarily eat, live and spawn on a small shelf measuring just 11x16 ft (3.5x5m) with a total area of 176sqft (17.5 m). They have been living in this shelf, as an isolated species for up to 60,000 years!?!"
"They were discovered in 1930, and since then have faced many trials, agriculture trying to drain the water, vandalism, and outright attacks. They are now surrounded by protective fences and surveillance."
"Since 1972 (200 fish) the population spiked at 550 in 1995, but then saw a slow decline- at its lowest count in 2013 it was down to only 35 individuals."
"Thankfully it's back up as of 2019 to 136 individuals. There have been multiple attempts at conversation even going so far as to build an exact replica of the Devils Hole 22ft deep! (6.7m) and have raised many fish there."
"They have a very fascinating history, and remain largely a mystery. For such a tiny fish- millions have been spent on conversation efforts and protections, legal battles and defense."
"I think it's all completely worth it, they are the single most endangered fish on the planet and are completely unique to the Devil's Hole."-umamifiend
Saved From The 'Bies
"Opossums generally cannot get rabies. Their body temperature is too low for the virus."
"Also the stomach acid of a vulture is so highly acidic it kills rabies virus and most bacteria, which is why they can eat dead disgusting rotting things."
"To clarify, I mean vultures stomachs are crazy super powerful and destroy just about anything that gets in contact with the stomach acid, where we would get very sick from eating a rotting racoon."
"Also so happy to see all the interest in opossums and vultures. They are very interesting creatures that are gravely misunderstood and get a pretty bad rep."
"Opossums are master tick destroyers that generally want nothing to do with humans or are pretty chill about us. Vultures are a critical clean up crew that prevent the spread of disease in the environment that rotting carcasses could spread, such as rabies.""-ginpanda
The world is just so cool, that no matter how many facts you do learn, you can always learn more.
So much is going on beneath the surface on our world, and it's up to us to uncover and share each and every very fascinating fact to keep everybody's mind expanding.
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They say knowledge is power, and the more you know, the better off you are.
But to what extent is that much true if the nuggets of information you just acquired are things that gave you nightmares?
For me, the knowledge that we all have spiders crawling around our faces keeps me up at night. Yes, we all have face mites.
I cannot go on with the rest of my life being aware of the phenomena without sharing this with you all lovely readers. So, you're welcome.
Curious to hear about other dreadful information from strangers, Redditor jo_exotic asked:
"What is a disturbing fact you wish you could un-learn?"
Natural Phenomenon
Let's face it, organisms are downright creepy...or gross
Constant Nibbling
"There's a type of crayfish that farms sea stars by cutting all their water legs off and eating it's arms all the way to the center, but leaving the center intact. it then feeds the sea star with kelp to keep it alive so it regenerates, and then repeats the process."
When Comes A Parasite
"In most cases when a parasite gets into the brain, they don't remove it. They just kill it with some sort of acid or something with a similar effect, then just let the body calcify it. It's weird cause you'd think that the parasite could still do something."
Mouth To Toilet Paper
"If you have an intestinal blockage you can burp up farts and have fecal vomit which is basically just throwing up your poop."
In Your Blood
"My biology teacher had a Q&A session before Christmas and one student asked if its possible to be allergic to your own blood. Unfortunately you can. Just imagine your own immune system destroying your red blood cells, constant hemorrhaging, constantly feeling cold and out of breath. When we got back from winter break we saw a new face in class, a former student of my bio teacher who just so happened to have this disease and we spent the whole class asking questions. I feel so bad for the guy but thankfully the medicine available to suppress the immune system has made his life bearable."
Horrific Facts
The following are more disturbing than fiction.
Cause Of Death
"When the Challenger exploded in 1986, the astronauts didn't die from the explosion. Nor did they die from depressurisation as NASA has initially claimed. (There is some evidence they turned on their personal oxygen supply.) They died from impact when they hit the surface of the Atlantic Ocean."
"They were in free fall for two and a half minutes."
"Jeffrey Dahmer drilled a hole into some victims' skulls and tried pouring different toxic liquids into the hole. He was trying to make a sex slave that could eat and drink but could in no way fight back or escape. The worst fact is that victims might survive the first hole with all brain function intact and live long enough to be fully aware they were going to get a second or third hole drilled."
Animals
If you could get inside the mind of an animal, you might want to make an immediate about-face after discovering the following:
Deep Bond
"Parrots often bond with a keeper, from their perspective, as a lifelong romantic partner. If the person dies, or the parrot is displaced, they can go into massive depression and pluck out their own feathers."
Pecked To Death
"I learned on Reddit that a woodpecker will tap enough to break into a baby bird's skull and slurp up their brains."
Shriek Of Terror
"The fact that dogs like squeaky toys because it sounds like their prey crying out in pain."
Most of us have a thirst for knowledge out of genuine curiosity about how things work or why certain events occurred in history.
But Google searches will inevitably lead you down the proverbial rabbit hole where you uncover a lot more than you could ever bargain for.
This is exactly what happened to me when I looked up what might be the cause of my face itching. I may not have found the most accurate information about my ailment, but that was when I was introduced to the existence of Demodex or eyelash mites.
They're basically arachnids that spend most of the time burrowed in your hair follicles and come crawling out on the skin's surface while you're asleep at night to mate and head back to lay eggs.
Did you just feel something on the side of your nose? It's probably nothing.
You were "today years old" when you learned....what?
You learn something new every day, even if you don't think you do--but when you're aware that you learned something that you really should have known, boy, you are really aware.
At the same time, you're like...how did nobody ever tell me this? Was I supposed to divine this from thin air on my own?
u/Lawvamat asked:
What did you just recently learn that "everybody knows"?
Here were some of those answers.
Hoodwinked
I went to Venice with my school and a group of girls told me that they eat their tampons after they are done with them. It was for some stupid reason like to regain their iron or something. I believed it and even the teachers played alone. I went back home to the UK and for about 6 months after the trip I still believed this lie. It wasn't until I asked my mum whether she ate her tampon.
She was HORRIFIED. Then she burst out laughing. I can't believe my whole class tricked me for so long.
A Nest Is Not At Home
Birds don't live in their nests.
My wife is never going to let me forget that this was a mind-blowing revelation for me.
Earth To Stars
The North Star isn't unique because of its brightness, it's unique because it doesn't move, always stays north, while the others rotate around it.
For extra trippage: the north star changes over time. The ancients had a different one from us. The point in the sky that north points to moves over time, making a complete circle every 26,000 years.
To Extend Where No Pencil Extended Before
I don't think everybody knows but I just discovered pencil extenders are a thing. I was just complaining on social media that I had a bunch of unusable pencils worn down to 2 inches, and just as I pressed send, I thought "there's probably something for that." I'm 41 and I've drawn all my life, never knew they existed.
Just Dandy
Dandelions (the yellow flowered weed) and Dandelions (the fluffy white weed) are the same plant.
I'm 29 and my dumb @$$ didn't connect that they have the same name.
Not A Bent Arrow
Oh man, for the longest time I thought the phrase "straight and narrow" was "straightened arrow" e.g. a person goes through a rough patch but now is on the 'straightened arrow' because you know, a straightened arrow flies straight and true while a warped one is all wild an erratic. Oof.
Don't get me started on my misunderstanding for an alternative word for crossing.
Bones In Your Face
That babies are born with a full set of baby and adult teeth already in their heads. Their teeth don't form when it's time for them to get them, they just push down out of their gums because they were always there.
It Was Really A Farm
When I was a kid, we had a huge dog that attacked a girl (because she was throwing rocks at him), so we had to get rid of him. My parents told me that they took him to a farm, where he would be happy and free, thinking he was dead.
Six months later, a farmer showed up at our house asking to give the dog back because he ate the cab of the farmer's truck.
Be S-Pacific
Not me but a friend of mine graduated high school and that same summer we discovered he didn't know which ocean was the Atlantic or Pacific
How Is Candle Work?
I learned this a few months ago and shared it on Reddit, which was apparently the first time many people learned this.
The wax in a candle actually fuels the flame. The heat from the flame melts the wax around it. The wick then draws the liquid wax up towards the flame. As the wax gets closer to the guy and therefore is warmed up even more, it goes from liquid to gas, and then the vapors burn to sustain the flame. Everyone seemed to think that the wax was just there to keep the wick vertical, but no, the wax actually feeds the flame.