It’s rare, but you can die at any moment for literally no reason at all. Your body just stops working.

Parasites can live anywhere inside of you, for years unnoticed. A simple migraine could be a tapeworm crawling in your brain, causing damage. Your eyes begin to blur frequently and you don't know why and it's not getting better. Losing weight and having diarrhea but it's not a stomach bug. Well, I guess it is... You are having a difficult time catching your breath and your chest doesn't feel right. It could just be some parasite hanging out, using you.

Your brain literally creates your own reality and your senses and body just go along with it.

If you believe strongly enough that you have been cursed, your brain can shut itself off entirely in severe cases. The psychological term for it is "Voodoo Death Syndrome." It's just the fact you can literally think yourself to death that unsettles me so.

The first AI that can successfully pass the Turing test would be able to pretend that it couldn't.

That as the permafrost melts, a lot of locked up methane will be released, and microorganisms there will "wake up" and do their jobs, breaking down organic matter, and release more methane and greenhouse gases.

The brain can play tricks on you: When you look at a clock and the second hand seems to freeze for a moment, your brain is actually generating a false memory - and your perception of time stretches slightly backward. This effect is called chronostasis.

The sudden urge to jump off of a very high height. You can be physically and mentally stable to the greatest degree and still have this feeling when at such a high height.

Obligate siblicide. In some species of animals, multiple offspring are born but only one is actually raised by the mother. The others are born only as backup in case the first-born doesn't survive. When the first-born is fine, which is the typical case, it kills the others.

After being decapitated there’s still few seconds of brain activity that happen before you snuff out.

The mantis shrimp can see colors that our eyes aren't capable of perceiving. Think about that. What else are we just not capable of sensing?

Sea stars eject their stomachs to cover edible parts of their prey, begin digesting it externally, and then pull the partially digested prey into digestive glands to finish the job.

When the Titanic sank non of the shoes decomposed so there’s tone of shoes at the bottom of the ocean.

Honestly nothing is more creepy than how deep sea anglerfish mate. The deep sea is dark, and the anglerfish are spread very thinly. Therefore, when an anglerfish meets another anglerfish, it’s incredibly important they get the chance to mate over and over again. The evolutionary strategy that deep sea anglerfish devised is extra creepy. The male latches onto the female, biting her and never letting go. That way he can inseminate the eggs she drops. Not that bad so far right? But wait, how does he eat if he’s latched on his mate? Well, the circulatory systems fuse and the female provides nutrients for the male through this fused circulatory system. The true horror starts here. The organs of male start to wither and atrophy, being absorbed into the female. Eventually, the male is reduced to a lump of testicles the females use to fertilize their eggs. Females are often covered in bumps of several males that have melted into the female, becoming a literal body horror lump of meat on the female.

There is more microorganisms on your body than people on earth.

A doctor once told me, on average every human has three anomalies. Not all are visible.

When a president declares a national state of emergency the law prohibiting medical experiments on unwilling human subjects is suspended.

Caterpillars turn completely into goo in their cocoon, and then become a butterfly.

A gamma ray burst could wipe out all life on earth instantly with no warning.

You get and cure cancer in your own body thousands of times a day.....

I could be drinking the same water that my extremely far relative drank back in like the 1800s

If you rub garlic on your feet you can taste it.

That 99% of all life that has ever existed has gone extinct.

The fact that bacteria in your gut can be more harmful than any flesh eating virus.

We know more about the moon than we do our own oceans.