What is the most disturbing fact about the human body?

  1. Idk about the most disturbing but how bad human teeth are. We’d think it’s our sugary and processed diets these days that cause it, but even Otzi the iceman discovered in Italy was found to have terrible teeth, mouth diseases and cavities. It’s odd that even with the most basic of diets our teeth are so bad.

  2. If your brainstem (the part of the brain that mediates most motor control for all of the body) is damaged, you can get "locked-in" syndrome. That means you're fully conscious and aware of your surroundings but unable to move or speak. The only muscles that remain unaffected in most people are the muscles that move they eyes and the eyelids. You're essentially trapped within your own body with your only way of communication being blinking or moving your eyes

  3. My mom’s partner is like this. He had one stroke too many in January and lives in a hospital bed now. We didn’t think he’d make it a week, but it’s almost June now. She visits him 5 days a week. He’s been asked if he wants to stay alive and he’s always “eyed” yes so…woof. Not me, I think I’d rather die.

  4. Some people suffer from Exploding Head Syndrome, which causes them to hear a loud bang when they wake up.

  5. When I was younger I believe I experienced this a few times. Sounds I heard were: about a million people talking and laughing all at once, a train that irl would've been about a foot away from me based on the volume of the sound, and a door slamming loudly.

  6. I am one of these people and it's scary. I had no idea this happened to others until I read an article about it. People hear different loud sounds. Mine is a shotgun blast. Luckily it doesn't happen often. Freaky shit.

  7. Not sure if this is by design, but I totaled my car once, almost completely uninjured somehow. Then I looked down to my right hand which I remember jabbing into my dashboard at 55mph. Luckily (unluckily?) only my pinky took the blow. But instead of a floppy-udder full of bone-sand, my pinky was 0.5 inches long. Broke no bones, but instead perfectly stacked my phalanges, or finger bones, INTO my hand.

  8. I did this with my whole arm. I was jumping over a fence with one hand on the fence, swinging my legs over. My hand slipped off the fence and I landed palm down with my arm fully extended. I broke the distal end of my humorous and proximal end of both radius and ulna. The broken forearm bones then went past the humorous, shredded my biceps, and came out through the skin near my armpit. My hand ended up where my elbow was supposed to be. The doc said he hadn't seen an arm injury like that outside of a car accident or very high fall.

  9. If you have a surgery where they need to move your organs around they might not function for a day as the body assumes that they are dead.

  10. L&D nurse here. This is why we won’t let post-op c-section patients eat until they fart. That way we know the digestive system is back online. If you eat too soon after abdominal surgery, you can end up with a paralytic ileus, which is where all the food just sits there until it gets thrown back out the top end. If you think c-section pain is bad, try a c-section plus vomiting.

  11. I had to have a gastrojenuostomy bypass and they told me afterwards that I couldn't leave the hospital until I defecated. 5 days after surgery, I still hadn't gone number two but I was passing gas like nobody's business. They said that was good enough for me to go home. Fortunately the next morning I did my business.

  12. It is always making disgusting body noises. The only reason you are not aware of it is because the ambient noise kind of drowns it out because your ears focus on it.

  13. I sat in the quiet room for med student research. I would be the research subject while my wife was getting a doctorate. I lasted 7 minutes, it was when I could hear my eyes move. That did it for me. Heartbeat, stomach gurgling, blood moving through veins…. Nope, it was the splurchy sound of my eyes moving in my head.

  14. Your skin is your biggest, most complex, and least understood organ. Your skin is what most everyone considers their identity. Your skin has an amazing amount of specialized areas and functions. Elbow skin is very different than the skin covering your ears. Skin is an external organ. It’s an organ that is in contact constantly with the world around you. All of your visible body is skin, except for your eyes and hair and nails. Your skin requires more energy to sustain than any other part of your body. Skin is fuckin wild. The actual “you” is wrapped in a big sweaty blanket we call skin.

  15. I noticed this after my abdominal surgery. When I turned over in bed my guts seemed to fall from one side to the other. Mentioned to my doc and she confirmed it was my bowels rearranging themselves.

  16. Apparently the doctor just throws your intestines back in there higgeldy-piggeldy because there isn't a correct way to pack them neatly.

  17. I had a similar sensation after I gave birth. I could feel some of my organs almost "dropping". It was weirder than my child trying to kick her way out of my stomach.

  18. The brain chemistry is stable enough to last thousands of years if not diseased, it's the rest of the body that kills us

  19. There’s an episode in Supernatural where there’s a doctor who just keeps replacing his organs when they fail so he lives eternally. I wonder if it’s actually possible 🤔

  20. Which is also why we salivate excessively shortly before vomiting. It's our body's self defense mechanism to reduce the acid damaging the esophagus.

  21. I have a nausea/vomiting disease that where I can't stop throwing up on my own. The longest was 19 hours straight vomiting and after the first couple I forgot to wipe my face down and the bile ate right through my skin. It only got worse from there so I have to factor that part in when preparing to go to the hospital

  22. There are a vast number of ways that your body can malfunction and kill you with little or no warning. An aneurysm can go undetected until it bursts and kills you. Getting hit in the chest just the right way can stop your heart. You can encounter an allergen that never previously provoked an immune response that freaks out your body so badly that you die.

  23. They can come at any age too. My (then) 11 month old son suffered a ruptured brain aneurysm 18 months ago. No symptoms leading up to it and the surgeons told us there was no way to see it coming. The exact words were 'unbelievably shitty luck'. Without a very fortunate, specific chain of events, we'd have lost him.

  24. This is the scariest thing to me right now. I’ve been having scares of health issues lately and everytime it’s something that can suddenly strike or even forewarn you days or months in advance. I have no idea how everyone is supposed to live without fear that something could just strike you and end everything one day.

  25. A third to a half of all fertilized ovum do not result in a viable pregnancy. They are expelled as a “heavy period” instead. Most women don’t even realize that they miscarried.

  26. Just experienced a chemical pregnancy a few weeks ago. At home pregnancy tests and ovulation calendar apps are great but you’re hyper-aware of what’s going on. Had 3 positive pregnancy tests and then two days later the heaviest period of my life

  27. Excessive prostaglandins is also why some people get really nauseated or experience the aptly named "period poops" right before/at the start of their period.

  28. Oh and that nonsense sets off the infamous period shits. It's like your body thinks it's funny to make it feel like you're being turned inside out.

  29. Add a little endometriosis and you are bleeding into your abdominal cavity as well, causing inflammation and bruise like pain. If enough gets on (or grows on) your pelvic floor muscles you can get spasms and cramps in places you've never imagined.

  30. I had cramps so bad as a teenager that a nurse thought I was in some form of early labour and was “hiding my teen pregnancy from my mother” when I denied it. Kept trying to take me aside away from my mum to make me confess. I hadn’t so much as held hands with a boy, but my cramps were so strong and I was passing out and vomiting pretty much every half hour.

  31. The tiniest injury to your brain can change your entire life. Depending on the part of the brain that gets hurt, you can lose your special/general senses, control over your own body, the ability to produce and/or comprehend language, your memories, your personality, etc. Remember to wear a helmet everyone!

  32. You don’t even need to get hit in the head. PTSD has been shown to completely rewire your brain and essentially turn you into a different person prior to the trauma based on your new brain make up.

  33. I had a stroke — that I was completely unaware of for about a year after it happened — I became a complete raging psychopath after it happened to the point that my family could pinpoint what day it likely occurred.

  34. My old boss died from an AAA (aortic aneurysm). His wife said he stood up from the table at the restaurant they were at, he stretched his arms and said his back hurt and collapsed. Supposedly he was dead by the time he hit the ground. :-(

  35. To actually hit that requires a fuck of a lot of force and you're not going to be retrieving that knife easily.

  36. The prescription acne medication Acutane turns your bones green. I learned this working in a bone & tissue donor center where sometimes you'd get kids (or adults) who'd been on the stuff and their bones were either bright green or a darker forest green depending on how long ago / how many treatments they had.

  37. Fuck I guess I’m a green boy now. Still gotta hand it to ol accutane since it cleared me right up and never had an issue afterwards

  38. You have about 2 inches of penis length that is "below the surface" but no amount of tugging will get it out.

  39. An estimated 60% of cancers arise from non-modifiable risk factors. In other words, they are not due to any lifestyle choices and they are not preventable.

  40. That’s actually very calming to me. Less pressure to do everything right. Im the youngest of my family so as long as I outlive my family so they don’t have to see me die, I’m ok with going when it’s my time.

  41. I’m so afraid to scroll this and inevitably see that god damn rabies copypasta and ruin my entire week

  42. Just last week someone in my town in upstate NY got rabies. They had a cat living in their basement, and a raccoon got in and fought with the cat. They were later bitten by the cat and it had to be put down so they could test it for rabies - positive.

  43. Your butthole and your mouth originate from the same cell grouping during development, but the butthole cells form first, then the mouth cells from them. That means your mouth is from your ass.

  44. Fun fact: organisms which form asshole-first are called deuterostomes, while organisms which form mouth-first are called protostomes.

  45. People that have sever epilepsy can get a procedure done to cut the corpus callosum which connects the two sides of the brain, and allows them to talk to each other. Once this happens your image identification side can’t talk to your words side, and causes issues if you aren’t able to look at an item with both eyes. Otherwise patients act mostly the same.

  46. My little sister was born without a corpus callosum it comes with some hearing, learning, and vision disabilities but it lets her do some weird shit too!

  47. People who are suffering from internal bleeding from like a crash or some other traumatic event also have an impending sense of doom. Some EMTS are trained to take people seriously when they say "I'm going to die" even if they outwardly look fine

  48. Sense of impending doom is a real symptom for a variety of often fatal conditions. For example, it can happen if you get a blood transfusion of the wrong type.

  49. Former EMT here. The term we used was angor animi, and it’s a very real thing. Critical patients, before they went unresponsive were known to say “please don’t let me die. Promise you won’t let me die.” It happens frequently enough that we have a pat response: You are in good hands, and we will do everything we can. We were told to never, ever tell a patient we weren’t going to let them die. Because if they were asking, they probably were going to die. They didn’t want any medic to have the burden of lying to someone right before they died. You’re in good hands, we’re doing everything we can. It would play in my head after a code that never got a pulse back, while I’m eating a shitty ER sandwich and slamming the third energy drink of the night. You’re in good hands, we’re doing everything we can.

  50. As strange as it sounds, I get this feeling for a split second occasionally when I breastfeed. It happened often enough for me to google it and it's more common than you'd think so I stopped worrying. It's a bizarre feeling. I'm a happy person normally. I can only describe it as feeling complete hopelessness, dread, emptiness. It happens during a let down and then as quickly as it comes it's gone within the second. It's definitely chemical.

  51. When we defibrillate someone who’s in an unsuitable rhythm, we’re basically just shutting off their heart and hoping it will turn back on by itself in a normal pattern. That’s why you don’t shock asystole, there’s nothing to turn off. Defibrillation is like hitting the reboot switch in the computer, hopefully the problem will solve itself when you turn it off and it’ll return to normal function

  52. When you think of the human body like a computer, there are a LOT of odd yet pretty applicable comparisons when thinking about certain ways the body functions. Kinda wigged me out the first time I really thought about it.

  53. Idk why it freaked me out but bones have holes in them for blood vessels called foramens. Also there is a tube from your ears to nose to oral cavity. And if they do a temporary craniotomy to remove pressure, they put the piece of skull in your stomach in the meantime

  54. It survives more trauma than people expect. People generally assume if your hurt badly that you die quickly, but most often you do not.

  55. Biology teaches us how much resilience is baked into the average human/animal. Chemistry and physics can teach you just how little that resilience means in the right conditions.

  56. I read a comment here once that said it’s not uncommon for paramedics and doctors to tell families that someone “died instantly” after an accident, when in actuality there was an extremely unpleasant bit of time where they were mangled but not yet dead.

  57. Fun fact: if you have surgery, when they put your guts back inside they just toss them in all willy-nilly and sew you back up then they figure themselves out

  58. Wounds and bone breaks are actively held together by your body: more specifically, the collagen it produces that acts like glue. If you don't eat enough vitamin C and get scurvy, you won't produce enough collagen—old wounds will reopen and long-healed bones could break apart again.

  59. I have neurodermatitis so skin wounds are nothing unusual for me. I was however really surprised when a damaged patch of skin on the inner side of my hand, that has completely healed and was practically gone for over 3 years, suddenly reappeared. Like, exactly as it used to look like. At that time, my wrist which I had stowed as a kid also began slightly hurting again when pressure was applied.

  60. Scurvy is literally my worst nightmare as someone who is really clumsy and struggled in the past with self harm. I’m like irrationally afraid of someday getting it, despite the risk being practically nonexistent

  61. If I remember correctly, and article discussing this experiment found that the bacterial combination in our belly buttons is almost as unique as our finger prints.

  62. Most of the bacteria that will decompose you when you die is already inside you and makes up a sizeable portion of your body mass. That’s why removing organs staves off decomposition of a body for longer.

  63. Your body will begin its inevitable decline DECADES before your mind does. You can mitigate it, but nothing can stop it.

  64. Or you might be one of the unlucky few whose brain goes first, and slowly lose your personality and understanding of the world around you.

  65. Adolescence. Most mammals hit adulthood in one clean break. Our kids hit a terrifying state of not being able to take care of themselves but capable of and hormonally hell-bent on reproducing. Like, what kind of messed-up series of horrors made THAT a biological advantage?

  66. I think the fact they we have ‘packs’ or ‘herds’ helps. I have more doubt this would be this way if humanity wasn’t like that. Older generations can help the new idiots keep their even newer idiot alive.

  67. More years of being reproductive the better the chances of making more, evolution is the blind idiot God, it's not about what's best, it about what's worked well enough they haven't died...yet

  68. My immune system is trying to kill me. It thinks that producing insulin is bad so it kills off insulin producing beta cells. Type 1 diabetes is a fucking hassle.

  69. My wife has it, it’s such a pain for her. She’s always been in shape and healthy, she just randomly got it when she turned 17. 32 now but there have been two times since I met her that I *luckily woke up and realized she was extremely low and unresponsive. First time I called the ambulance, second time we had the nose spray and it worked like a charm.

  70. Pregnant women if injured, the stem cells from the womb will go to damaged organs and rebuild them to protect the baby.

  71. On the other hand, if the woman isn't providing enough nutrition to the fetus, the body will actively take calcium from her bones and other nutrients from elsewhere in the body to feed the fetus.

  72. If I remember correctly they are not actively replaced but instead of scar tissue you produce bone so for example every pulled muscle turns to bone until something important can't move around anymore

  73. At any given moment, you are one little blood vessel wall away from not being alive anymore. A brain aneurysm can just wipe you out.

  74. I had a friend pretty much drop dead out of no where because of this sad thing is he just decided weeks earlier he wanted to live after almost commiting suicide.

  75. I always thought it was insane to see people performing crazy acts of strength that leaves people broken for a few months. I recall a story where a 100 pound women threw a car off of her baby. She clenched her teeth so hard she shattered all of them and was couldn’t move for days. I always wondered how we can trigger that response in people like strongmen to see the absolute limit of humanity’s strength. Or have a league of boxers where they openly take steroids and adrenaline before fights

  76. If you get electrocuted strongly enough, it can actually cause your nervous system to maximally fire all of the muscle fibers in your body at once, which produces enough force to launch your body a good distance without you even jumping. If you ever see footage of someone getting "blown back" by an electric shock, that's 100% their own muscles propelling them, electricity produces no direct mechanical force.

  77. There's an internal mental lock that prevents people from using 100% of their strength at any given time - that's why you can't, say, rip off your own finger (without some kind of outside assistance).

  78. That our immune system has cells specifically engineered to fight EVERY ILLNESS PHYSICALLY POSSIBLE, and other cells have the specific job of searching for them within our body when they are needed. Once they get activated once, they are active for the rest of your life, it’s why you can only get many diseases once, after that first time, your immune system can skip the start up phase of curing you and get right to the germ fighting.

  79. I think I read somewhere that everytime you get sick with a cold it's basically a different variation. So you never actually get the same disease, the symptoms are just always really similar, so people just say they have a cold.

  80. It may seem like we know a lot about the human brain, but our standard way of studying brain activity is an fMRI, where a single pixel contains over 3 million neurons. That is more than many vertebrate animals' entire brains. The truth is, we really have no idea how the brain gives rise to consciousness.

  81. I have been thinking about this a lot lately. I have mental illness, and I take several medications for it. They took me off of one of them because of side effects, and the withdrawal symptoms I've been having from it are bizarre. Every time I move quickly or hear a loud sound, it feels like I'm being electrocuted. I have never felt anything so strange in my life. It made me consider how we don't know how the brain works, and we don't actually know how the medicine works either. We just know by observation that it does. Who knows what's happening in my brain.

  82. I’m sure you know this, but there are lots of resources available to help with anxiety. You don’t have to repeatedly suffer the absolute hell of panic attacks. Mine are finally under control.

  83. My fucking immune system is quite aware and tries to gobble them up whenever it can. I have to take medication to make my body not destroy my eyes.

  84. Shaving your butt, and then trying to make a quiet fart makes you realize just how useful butt hair is 😁 like a clap of thunder.

  85. I liked how you described the relation between your consciousness and your brain as two living things living in the same body

  86. You can die of a broken heart. you can have your heart broken and become ill to where your body goes into survival mode and can shut down major functions.

  87. It’s takotsubo cardiomyopathy. Clean coronaries but their EF is in the toilet. See it a lot with patients fighting with family members or losing a loved one.

  88. Pretty rare to die of it without some serious comorbidities. Takotsubo Cardiomyopathy is one of the few forms of heart failure that typically resolve.

  89. Humans are deuterostomes. Meaning as embryos the first thing to develop is an opening that will eventually become the anus. So at one point you were nothing but an asshole

  90. That the placebo effect is way stronger than most people think. In Vsauce's video on the subject, a kid suffering from constant seizures stopped having the seizures, I'm pretty sure entirely. And all because they put him in a machine that they said "healed him" when in reality it did nothing.

  91. I recall reading (long ago so I have no source) that the placebo effect still works even if you KNOW it’s a placebo. Basically you somehow just trick your body into not being sick by… brain magic? Idk. R/wowthanksimcured

  92. Heartstrings are a real thing. The proper name is chordae tendineae. If you thought 'pulling on the heartstrings' was just an expression with no basis in anatomy, it does actually relate to a real kind of tendon in the body.

  93. if you need to take a shit, you can feel it on the left side of your stomach just about near your hip bone, it will feel like a harder lump than on the other side...as you have your bowel "movement" you can feel the lump moving along through your lower intestine and the "lump" goes away

  94. Allergies and intolerances can just come and go as they please with no explanation Was lactose intolerant from age 13 to 22

  95. I was lactose intolerant until I got pregnant with my first kid, I am not any longer. But after my second I am now allergic to melon.

  96. It can die really easily sometimes. A scratch on your hand could cause sepsis and you die. You could die from shock. You could just have an aneurysm or a stroke and die. Any one of us could die without any real warning, and if you live alone, you might not be found for a long time.

  97. you I'd be surprised but bacteria steals our DNA, and from each other and other organisms it comes into contact with. some bacteria have specialised conjunction "tubes" to steal genetic information from other bacteria

  98. The symptoms of heart attacks are different from men and women. There is more research on men than women as well. I've heard of multiple people who have died from a heart attack because they went in and the doctors didn't recognize it because it's not the normal symptoms seen from a male.

  99. Our brains create false memories way more often than we think. False memories occur pretty easily as well. Going along with that, the more "vivid" a memory seems the more likely it is that it's fabricated. On top of that, the more we recall a memory, the more susceptible to change it becomes and then the modifications that have been made seem more real because us recalling and then consolidating it further cements it in our memory to be "true".

  100. We have the ability to recognize faces where their seemingly are none. In clouds. In shapes on our walls. In shadows dancing on the ground. But it begs the question. What caused us to evolve this survival trait to recognize a face we otherwise would not have noticed begin with?

  101. When someone diets and loses weight, that fat isn't pooped out. Most of what you poop comes from something in your digestive track you consumed. Fat burned is exhaled out as carbon dioxide.

  102. It’s like time stands still forever, and then starts shaking around on you like some crazy ol’ hooker on meth.

  103. A female is born with every egg they'll ever release from the ovaries. Therefore, a pregnant woman who is carrying a female child is also carrying the eggs of her grandchildren.

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