A good portion of spiders shed their exoskeletons occasionally so when you happen to come across a "dead" spider, there's a good chance that it's just an empty husk and there is another, slightly bigger spider nearby.

Chiropractors kill more people per year than sharks

Most laugh tracks were recorded in the 1950's. You are hearing dead people laugh.

An aneurysm can happen at any time to anyone for any reason

**Someone you love will probably get dementia, and it will f*****g suck.** The human brain is a machine, and like any machine it inevitably breaks down. Imagine a person you love. Imagine their mind starts dying before their body. They cease to be the person you knew, a little bit at a time. They lose their memories - the cherished and the mundane. Then they start looking at their loved ones in terror because nothing makes sense and everyone seems like a stranger. It's nature at its most cruel. F**k dementia.

Human a******s can stretch out to 7 inches without tearing and a raccoon can fit in a hole as tight as 4 inches. You’re welcome

With enough stressors you can trigger a psychotic episode and never be mentally healthy again.

You have walked past someone who was spending their last day alive.

Lake Superior has dead bodies from the 1920s. With freezing temperatures and a lack of oxygen, bodies don't decompose at the rate they would under normal conditions. Sure, they don't look as "fresh" as the day they died (in fact they're covered in bodily fat from saponification), but they can be recognized as human remains. In fact, there's been this ongoing debate because of the ship SS Edmund Fitzgerald that sank in the 70s, because scuba divers wanted to explore it but the families of the deceased were upset because this is basically a mass grave. There's a YouTube channel called Ask a Mortician that just did an episode on this, and I really recommend it. She goes a lot more in-depth about the facts, and even went out there to talk with a surviving Fitzgerald relative.

You've probably walked past a murderer

You may already be dying, many fatal diseases have no symptoms until it's too late. You're welcome.

By you winning the lottery you increase your chances of being murdered by a family member or any other person close to you.

How much do you know about your great grandparents? Because in 50-100 years, that will be how much the world knows about you. Edit: for those of you stating that information storage and accessibility will allow everyone to easily look back into the past, I challenge you to run a game designed for Windows 95. Point being, information storage is not a ubiquitous system and as the architecture of software and hardware changes there is certainly a possibility that some systems will require specialised tools and equipment to acess. Furthermore, social media is the highlight reel of history, not the story. Very few people show their true selves in their twitter or Facebook feed. Also a number

Your body produces a cancerous cell about once every thirty minutes. Your immune system is usually very, very efficient at finding and immediately neutralizing them. But it's very possible that thirty minutes from now will be the time your immune system slips up and allows it to reproduce.

Komodo Dragon's poison their victims and then follow them for hours on end. Then once the victim is thoroughly exhausted and poisoned, it tears it to shreds and eats it alive.

Sleep helps your immune system fight off those cancer cells, just think of that when you're up at 4AM.

Kiwis and pineapples eat your mouth...

According to some research a human head may remain conscious for up to 30 seconds after decapitation. Most notably, a man named Dr. Beaurieux did a series of experiments in the early 1900’s where he yelled at recently decapitated criminal’s heads and saw a response.

You never stop watching with your eyes, even when you close them.

You can have a heart attack and die at any second because of a heart problem you never knew about. There's one called Brugada syndrome which has no physical evidence and most people aren't diagnosed with it until they drop down dead and testing is done on immediate family members (it's genetic) and one of THEM is diagnosed with it. Happened to my father. We found out because I'm the one tested who has it, my uncle and brother got the all clear, chances are my grandad has it too (4 heart attacks since he was in his mid 40s)

If you begin to display [severe] symptoms of rabies you will go crazy and die. There's no cure.

Bed bugs can survive for up to a year without feeding under the correct temperatures. As adults the females can lay 300 eggs in their lifetimes. You could be spending thousands of dollars and eventually just get infested again. And bed bugs are making a comeback after almost being eradicated.

If you’re murdered there's a very high chance you knew your killer.

When someone dies, the last thing the dying person senses is the sense of hearing, then touch, smell, and taste. The first sense that is usually gone is sight.

There is a theory in quantum cosmology. It is the hypothesis that our universe is actually a 'false vacuum', meaning that it isn't in its most stable possible configuration. Think of a ball rolling on a surface having several local minima (dents in the surface) but there is only one global minima (the dent which is the deepest). The ball may be in one of the dents which is not the deepest one. So, it is stable for now, but, given the chance it will slide to the deepest dent, which is the lowest energy configuration possible, the so-called 'true vacuum'. Now the interesting part. If our universe is, indeed, in a false vacuum, due to something called 'quantum tunneling', it may 'tunnel' into the true vacuum, creating a bubble of lower energy. Once this lower energy bubble is formed, it expands, engulfing the entire universe, destroying everything we know as is, and creating new laws of physics. The speed of expanding is the speed of light, so we would have no information whatsoever about it before it hits us. We will literally never see it coming. The really scary and really useless part? There is absolutely nothing we can do about it.

I dunno how useless this is but; You are never 100% safe. Think about it, no matter what scenario you put yourself in, there will always be some sort of counter measure. Let's say you built a concrete room that is 10 inches wide with no doors and windows underground, an earthquake could happen, a sinkhole could open up, a ravine could open up, etc. No matter how safe a situation sounds, it can NEVER be 100% safe.

Your body can kill itself just to get rid of a foreign organism.

the paris climate accord relies on technologies that do not yet exist, and might never exist, to pull carbon dioxide from the air by future generations. if we reach the paris climate accord goals, including using technologies that do not exist yet, there is at least an 50% chance of staying under the predicted catastrophic temperature rise. Literally coinflipping humanity. why is this a useless scary fact? because there literally is jack s**t you can do about it in our current societies, beyond voting.

Alright I collected some of my favourite scary facts from an app I really like called Thunder Dungeon. They have all types of memes and facts and stuff so it was all written in pictures I had to manually write them down. 1. There's an episode of sesame street that had to be pulled off the air in 76' cause it was so scary, parents complained their children are screaming in horror at the TV. 2. There's a disease nicknamed Ondine's Curse, which causes suffers to die if they fall asleep. 3. On August 26th 1968, every TV in America shut down for 25 seconds, there was a murmuring sound coming from the TV and people reported hearing a demon. 4. In 1994 a man was arrested for dressing as the grim reaper and standing outside old people's homes. 5. It only takes about 7 pounds of pressure to rip off an ear. 6. There is an island in Italy that is supposedly so haunted that the government forbids the public from visiting it. 7. There's a syndrome called Charles Bonnet Syndrome that have been called "a window into a parallel universe". People who has it are prone to seeing bright lights, weird shapes and scary faces. The thing about this syndrome is that all those who suffer from it are almost exclusively blind or vision impaired. 8. When a bear attacks you, he will most likely start eating you alive rather than killing you first. 9. At any possible moment, Earth could be hit be a Gamma Ray Burst which will extinguish most if not all life on the planet. 10. A woman in St.Louis was watching a TV documentary about a serial killer who tortured and killed women, when she realized she was living in his former apartment. 11. There's a Caterpillar so poisonous, just brushing your finger on to it can cause internal bleeding in your brain. 12. In 1942, a man known as the phantom barber would break into people's house while they were sleeping to steal a lock from their hair. He was never identified. 13. There's a fish called a Stone Fish, it's so venomous that if you step on it you could die in 20 minutes. 14. According to a recent study, 1 in 5 CEOs demonstrated psychopathic traits. Another population with similar proportions of psychopaths is the prison population. 15. There was a guy from New York who owned a car with the license plate 5V 1732. He died on May 17, 1932. That's all folks!

There’s such a thing as “hair splinters.” Hairdressers deal with it all the time after cutting particularly coarse hair, the small pieces can stick in you like a splinter and pose risk of mega infections if you’re unable to get them out. I’ve seen a stylist friend of mine lose a whole finger due to one tiny sliver of hair.

Your kitchen sink has more bacteria per square inch than your toilet seat.