“In 2019, there was a document about internet predators. The filmmakers hired three young-looking actresses and let them pose as 12yo girls on social media for 10 days. They received 2458 messages. Only one of them actually wanted to chat, the rest were sexual predators.” - the_mudskipper https://www.reddit.com/r/AskReddit/comments/nwbbm3/what_are_some_deeply_unsettling_facts_that_you/

“Within three days of death, the enzymes from your digestive system begin to digest your body.” - Smidvard_

“Mutineers on ships were hung by their nails. Or if they did something really bad they would get a rope tied around their neck and dragged under the ship to be killed. The ship was covered in barnacles and other marine life that would cut up the unfortunate man. It's called keelhauling (kielhalen in Dutch) and it combines a bunch of terrible fears of mine. Like drowning and open wounds.” - martijnfromholland

“If a hamster manages to get it’s hands on your body if you are dead, it will use chunks of your skin, hair and other stuff to make a nest. Leaving a very bloody and messy scene behind” - Indistrol

“People that are good at murder do actually get away with it.” - randamm

“In 1933, a doctor named Carl Tanzler raided the tomb of a female patient with whom he'd become obsessed and stole her body. He lived with the corpse for seven years. As the body fell apart, he attached the corpse's bones together with wire and coat hangers, and fitted the face with glass eyes. He was only caught when someone saw him dancing with the corpse in front of an open window.” - Platonus44

“21 year old girl from South Carolina had a psychotic episode after using meth... pulled both of her eyes out and crushed them in her hands because she thought she needed to in order to save the world. I believe people saw it happen.” - Thrwawy819

“All whales eventually lose the energy to surface for oxygen, so they basically just sink and drown” - mahindra27

“After the bombing of Hiroshima, "black rain" that contained radioactive material fell, and many didn't realize it until it was too late. Also, according to my Japanese professor, they didn't even have a word for the atomic bomb at the time. I unfortunately can't remember what she said they called it instead.” - Flying_Ninja_Bunny

“Paradoxical undressing. it happens during the last stages of hypothermia. as your nerves are damaged, the person removes all of their clothing in freezing temperatures because they feel irrationally hot.” - shadowinc

“Cadmium poisoning is so horrible the name in Japanese (イタイイタイ病) literally translates to it hurt it hurts. Cadmium poisoning can cause your bones to literally soften; also it can cause kidney/lung disease, chills, muscle aches, hair loss, and fever.” - rando-calrisan

“Tumors can grow teeth” - NoLiferBg

“Veteran criminals in the gulags would recruit naïve prisoners for their escape attempts called "cows" for the sole purpose of eating them when they ran out of food in the Siberian wilderness.” - Jaquivleon

“In the Battle Of Verdun, over a million artillery shells were fired onto a 19 mile wide stretch of land in the first 12 hours. If you were lucky enough to survive until then, the sound alone was enough to drive you insane.” - AldoBooth

“The little girl who voiced Ducky in the Land Before Time movies was murdered by her father when she was 11, in part, because he was jealous of her success.” - Forsaken_Cookies

“Japan did some horrible experiments on people during WW2 (Unit 731). Vivisection, shattering people’s frost bitten limbs, biological warfare, etc. It’s all quite horrific and don’t recommend anyone without a stomach for horror to read about it. Also, after the war, the people who ran it were never tried as war criminals because the US decided to keep them and their research under wraps so that they could get a hand up on the Soviets.” - RedSkyGhost

“The astonishing fatality rates that can be found in so many battles in the First World War weren’t accidents or unfortunate byproducts of the technology - they were factored into the battle plans. By the nature of attritional warfare it was calculated how many men would be lost every week and commanders drew up enough reinforcements to replace them. This was called “Normal Wastage” - Medafets

“Mortgage means "death pledge" - GoneInSixtyFrames

“https://en.m.wikipedia.org/wiki/Mummy_brown Mummy brown is a paint hue partially made up of ground up Egyptian mummies. There are paintings made of dead people.” - Pxireland

“In extreme cases of scurvy, your scars break down and old wounds re-open. Collagen keeps scars together and that collagen maintains itself throughout our lives. But without vitamin C, that process begins to halt and the collagen breaks down. Eat your fruits and veggies folks.” - Spectre06

“The world's most prolific living serial killer is a man called Pedro Lopez. He was convicted of the killing of 110 girls. But he claims he has raped and murdered over 300. His current whereabouts are unknown. https://en.m.wikipedia.org/wiki/Pedro_L%C3%B3pez_(serial_killer)” - DavosLostFingers

“In the 1800s a LOT of dentures were made using the teeth of dead soldiers.” - SnooDoughnuts3368

“That the U.S. is not, as we are frequently told, a democracy. It is a republic, in fact, run by a few wealthy oligarchs.” - icnoevil

“The symptoms for a heart attack can be a lot milder than what is shown in movies or TV shows. I have seen people coming in with some discomfort and then passing due to a massive infarction when we did the angiogram.” - OneNOnly007

“Terminal lucidity is the return of mental clarity or memory or consciousness shortly before death. This happens to around 10% of people with dementia.” - Final-Procedure-8235