20 True and Disturbing Facts That Will Shock You

Sometimes truth is way stranger than fiction. Sure, we’ve all heard some bizarre random facts before. But every now and then, you stumble across certain true tidbits that make you go “Wait…WHAT?!” 

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These aren’t your fun, trivial facts to impress people at parties. No, these 20 true facts are deeply unsettling in a way that sticks with you. From creepy historical anecdotes to shocking human behavior to just plain weird biology, this list is a deep dive into some of the most profoundly disturbing facts out there.

1. Zombie Fungus Takes Over Insect Hosts

One of the most terrifying examples of mind control in nature comes from the Cordyceps fungus. It releases spores that infect insects like ants, taking over the host’s mind and body.

The fungus compels the insect to leave its colony and find a cool, humid place to die – the ideal environment for spreading more deadly fungal spores. The fruiting body of the fungus then erupts from the dead bug’s body in a scene straight out of a horror movie.

2. Cruel Rat Experiments

In the 1960s, psychologists deliberately induced anxiety and depression in rats and mice through disturbing experiments meant to mimic human psychological trauma. The researchers subjected the animals to inescapable electrical shocks, loud noises, and other stressors. 

Eventually, the traumatized rodents gave up trying to escape, exhibiting symptoms and behaviors that mirrored clinical depression in humans in a haunting way.

3. Decapitated Head Transplant Experiments  

In the 1970s, a controversial surgeon named Robert White became obsessed with the idea of transplanting a human head onto another body. His ghoulish experiments began by successfully grafting the head of one monkey onto the body of another.

Though the procedure initially “worked” in that the head responded to stimuli for a short time, the two foreign bodies quickly rejected each other and the head died.

4. Rabies Makes You Hydrophobic

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The rabies virus is scary enough with its nearly 100% fatality rate once symptoms set in. But what makes it even more disturbing is a bizarre symptom it causes called hydrophobia.

In the later stages of infection, the virus creates an irrational panic and fear around water and liquids. This makes it impossible for the rabies-stricken person to drink, leading to a slow and agonizing death by dehydration.

5. Tarantula Hawk’s Sting

This insect’s nickname of “delirium tremens” is enough to send shivers down your spine. The searing sting of the tarantula hawk is ranked as one of the most excruciatingly painful insect stings in the world.

Its scientific name means “holding madly to one thing in the mind” – a reference to the traumatic effects of its venom. The sting causes an incapacitating burning sensation designed to paralyze and preserve insect prey.

6. Hair Eating Disorder

While trichotillomania (compulsive hair pulling) is a relatively well-known disorder, there’s an even more disturbing condition called trichophagia.

This psychological disorder causes people to compulsively eat their own hair, which can lead to severe intestinal obstructions and require surgery to remove the hair mass. 

7. Global Food Shortage

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During the years of World War II from 1944-1945, Nazi forces blocked all food supplies from reaching the western Netherlands.

This created such a severe famine among the Dutch population that a few million people began starving and had to resort to eating wood, grass, and even tulip bulbs to survive.

8. Brain-Eating Amoeba

While extremely rare, this microbe is one of the most disturbing infectious agents known. The heat-loving amoeba Naegleria fowleri can enter the body through the nose after swimming in warm fresh waters.

From there, it travels up into the brain where it causes a devastating condition called naegleriasis – destroying brain tissue and triggering brain swelling. It’s fatal in over 97% of cases.  

9. Self-Cannibalizing Mothers

Few acts seem to violate the natural order more than a mother inadvertently eating her own babies. Yet this gruesome act, known as matriphagy, occurs in certain insect species like the butterfly family Lepidoptera.

In some of these creatures, the newborn larvae or offspring quite literally eat their mother alive shortly after being born or hatching from their eggs.

10. Psychological Suicide Games

In the early 2000s, a disturbing and deadly phenomenon arose among teenagers and young people in parts of Russia, Ukraine, and other Eastern European countries.

So-called “suicide games” started circulating online, escalating through anonymous forums with a series of progressively more harmful dares and instructions. The final challenge was taking one’s own life. These suicide pacts and challenges impacted hundreds of vulnerable youth.

11. Deadly Human Remain Ash Hazards

You may assume cremated ashes are harmless, but they actually pose serious health risks – especially if ingested or inhaled.

That’s because human ashes can contain all sorts of potentially toxic substances like radiation particles, carcinogenic compounds from medications or treatments, and heavy metals that have accumulated in the body.

12. Violent Human Mating  

Research has uncovered a disturbing possible biological basis for male violence and aggression. Studies found that male relatives of men with wider facial features were more likely to have been convicted of violent crimes.

13. Deaths From Drinking Too Much Water  

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We all know water is essential for life, but did you know drinking too much of it can be deadly? In rare instances, consuming excessive amounts of water too rapidly depletes the body’s sodium levels and causes hyponatremia.

This condition causes brain cells to swell dangerously, leading to seizures, coma, and potentially death from a phenomenon called water intoxication.

14. Mass Reindeer Suicide 

One of the most baffling and disturbing phenomena in the animal kingdom occurs among migrating herds of reindeer. For reasons still not fully understood, large groups of the hoofed animals will sometimes inexplicably begin running off of cliffs in a fatal stampede.

These so-called “reindeer crashes” or “suicide travel” events result in the bizarre deaths of hundreds of reindeer at a time.

15. Suffocating Blanket Babies

In an incredibly dark chapter of history, many babies in 18th and 19th century Germany were killed as part of a “rebirth ritual” soon after birth. The infants were tightly wrapped and bound in blankets, then placed in special boxes where they would slowly suffocate to death.

16. Fatal Familial Insomnia

One of the rarest and most terrifying medical conditions is called Fatal Familial Insomnia (FFI), caused by a genetic mutation that creates misshapen prion proteins. This disorder prevents the ability to sleep entirely, as neurons in the brainstem and thalamus degenerate.

17. Self-Cannibalism In The Womb

While the possibility of conjoined twins is relatively well known, there’s an extremely rare condition called “fetus in fetu” that’s far more disturbing. It occurs when one of a set of twins begins enveloping and absorbing all the cells and anatomy of the other during gestation.

The result is a single remaining baby that is born with parts of the “vanished” twin absorbed within its own body.

18. Serial Killer Urban Legends

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Many ubiquitous urban legends that get passed around as plausible seem too shocking to be true – like a hook-handed serial killer or killer with a degree in murderology.

While these specific stories are likely fabrications, the truly scary part is some criminal experts believe they may have been inspired or shaped by the real-life murderous acts of uncaught serial killers.

19. Tsunami Human Remains  

In 2011, the devastating 9.0 magnitude Tohoku earthquake off the coast of Japan triggered a massive tsunami. The incredibly powerful waves washed away entire towns – and dislodged contents from graveyards and human remains in a grisly phenomenon.

Ancient human skeletal fragments dating back around 6,000 years washed up along the Japanese and Russian coastlines.

20. Lobsters Cannibalize Their Young

You may have learned lobsters can live to extremely old ages, but their eternal youth comes with a dark secret – they are opportunistic cannibals willing to feast on their own kin. Studies on lobster populations in crowded aquaculture farms show adults will readily eat their own recently hatched young.

Conclusion

After reading through all those deeply disturbing facts, you might be feeling a bit unsettled – and that’s perfectly normal! The world can be a pretty messed up place sometimes, with plenty of true stories that are way darker and weirder than you’d expect.

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Mary Apurong

Mary Apurong is an experienced writer and editor who enjoys researching topics related to lifestyle and creating content on gardening, food, travel, crafts, and DIY. She spends her free time doing digital art and watching documentaries. Check out some of her works on Mastermind Quotes.