30 creepy and crazy facts about the human body (31 photos)

Humans are naturally curious creatures - we want to know everything and about everything, including, of course, our own body. However, some secrets would be better left as such. Reddit users have shared the strangest and creepiest facts about the human body, which prove that curiosity is punishable.





1. “Stomach acid is so strong that it would burn right through us if we didn’t produce mucus every few hours.”



2. “Every day you produce cancer cells, but the immune system deals with them. Correction: as a rule."





3. “About a third to half of all fertilized eggs do not become a viable pregnancy. Instead, they leave the body under the guise of “heavy menstruation.” Most women don't even know they're having a miscarriage."



4. “The brain will always protect itself, even if it results in suffering or death for you. Do you inhale smoke while in a burning house? The brain will make you stop breathing and lose consciousness. Stuck somewhere in the cold? You will fall asleep so as not to waste energy, and you will never wake up again. Does the brain need more oxygen? You'll pass out while driving in the middle of the road. Did a bear tear off your leg? Here's some adrenaline so you can save your brain, even if there is a huge risk of infection or new injury. Is your brain under too much stress? He will make you resort to alcohol or drugs. Most of the time you and your brain work together, but in a critical situation it will sacrifice you.”



5. “Your body contains enough copper to fill a pair of headphones.”



6. “I noticed this after I had abdominal surgery. When I turned over in bed, my intestines seemed to roll over from one side to the other. I told my doctor about this and she confirmed that my bowels were indeed changing.”



7. “The body makes nasty noises all the time. You don't notice it only because the surrounding noise seems to drown them out, because your ears focus on it. A very unique way to get to know your body is to go to one of these super quiet rooms that completely absorb all sound.”



8. “Women are born with all the eggs they will release from their ovaries in their lifetime. Therefore, a pregnant woman carrying a female child is also carrying eggs that will become her grandchildren.”



9. “This week, a local girl in her twenties died of toothache. Over the weekend, she posted on Facebook that she needed to see the dentist, but she would wait until Monday, and by Sunday morning she was gone. The infection has entered her brain."



10. “The anus and mouth develop from the same group of cells, but the cells of the anal region are formed first, and then the cells of the mouth are formed from them. It means your mouth is made of your ass.”



11. “If the brainstem (the part of the brain that controls motor control throughout the body) is damaged, locked-in syndrome may develop.” That is, the person is fully conscious and aware of their surroundings, but cannot move or speak. The only muscles that remain unaffected in most people are the muscles that move the eyes and eyelids. You are essentially trapped in your own body, and the only way to communicate is by blinking or moving your eyes. This can be caused by toxins, blockage of the basilar artery, which is the main artery of the brain stem, or other damage to the brain stem.”



12. “An estimated 60% of cancers are due to uncontrollable risk factors. In other words, it is not lifestyle-related and cannot be prevented.”



13. “The head can be turned about three and a half times before it comes off.”



14. “There are no muscles in the fingers and toes. All the muscles that control them through tendons are found in the forearms/hands and legs/feet. Your fingers are like puppets on strings. Sweet dreams"



15. “There are tumors with hair, teeth and even eyes. They are called teratomas."



16. “Even the slightest brain injury can change your entire life. Depending on what part of the brain is affected, you may lose special/basic senses, control over your own body, the ability to use and/or understand language, memories, personality, etc. Remember to wear a helmet, people!”



17. “Menstrual cramps are essentially the result of the uterus suffocating itself. To remove the mucous layer from the uterus during menstruation, the uterus must contract. Sometimes, as contractions become stronger, the uterus compresses the blood vessels so tightly that oxygen cannot reach them, sending pain signals to the brain. But wait, there's more - this process increases the production of chemicals called prostaglandins, which cause stronger contractions in the uterus. That’s the truth, no mercy.”



18. “Once upon a time, scientists took a swab from an American’s navel to study the bacteria living there. They discovered bacteria previously known only in Japan. This person has never traveled outside the United States, so who knows what bacteria from what countries you are carrying in your belly button.”



19. “Your body can malfunction and kill you with little to no warning in so many different ways. An aneurysm can go undetected until it bursts and kills you. A “successful” blow to the chest can stop the heart. You may be exposed to an allergen that has never previously provoked an immune response, but it will scare your body so much that you will die. You literally just don’t know when your body is just going to… die.”



20. “You secrete and swallow 1 to 2 liters of saliva. Every. Day".



21. “You can die from a broken heart. A person with a broken heart can become so ill that the body goes into survival mode and shuts down basic functions.”



22. “If a pregnant woman is injured, stem cells from her uterus travel to the damaged organs and repair them to protect the baby.”



23. “People are deuterostomes. That is, the first thing that develops in the embryo is the opening that will eventually become the anus. So at some point you were just an ass.”



24. “Your spine and support system are designed to support movement on all fours. To put it bluntly, we all have bad backs.”



25. “Your bones are wet.”



26. “Ticks live and feed on your face.”



27. “There are about 1000 species of parasites that can live in the human body. Tests can only detect 50-60 of them.”



28. “Brain chemistry is stable enough to last for thousands of years unless a person is sick. The rest of the body is killing us.”



29. “Our own immune system can kill us by essentially blowing itself up in defense of intruders.”



30. “Your immune system has no idea your eyes exist, otherwise it would attack them and leave you blind.”