The human body is the most fascinating and strange machine there is. There is still so much we don’t know and the plethora of things we do know helps us understand our body and the amazing things it is capable of. Whether it’s its ability to avoid cavities with kisses or the fact that human hair is nearly indestructible, this list is a collection of the strangest facts about the human body.
1. Human Teeth Are As Powerful As Shark Teeth
It will surprise you, but it is totally true. Even though shark teeth are made of an even harder ore than human teeth, the two are extremely similar when it comes to potency.
This is because the enamel that surrounds and protects a shark’s teeth is almost comparable to that which protects human teeth.
2. When A Person Blushes, Their Stomach Blushes Too
If you blush often, the next time this happens to you, you will think about this article. In fact, when you blush, your stomach turns as red as your face!
It happens because the capillaries in your body widen whenever you feel a little uncomfortable because the blood flow increases. It is this influx that is responsible for the red coloring of your face and stomach.
4. Getting Your Heart Broken Could Cause Heart Problem
This really hurts my heart. It’s painful enough to have a broken heart like that, but in addition, you can develop a heart problem called “broken-heart syndrome”. It is just as painful of its kind.
Apparently, the chest pain, shortness of breath, and emotional stress one experiences during a heartache are similar to the symptoms of a heart attack, except that they pass quickly within a few days or weeks.
5. A Human Face Can Take 7000 Different Expressions
Men today have more facial muscles than any of our ancestors. Obviously, since we don’t have, or at least not as much, facial hair as our primate ancestors and cousins. As a result, our expressions are seen much more than before.
Researchers have looked at thousands of possible facial expressions and have noticed that they increase as we evolve.
This probably won’t be the biggest surprise on our list because we’ve all heard somewhere that human hair is incredibly resilient. They are so powerful that the only thing that can destroy them is fire.
Additionally, hair decays at an incredibly slow rate, and it can easily resist many types of acids and chemicals.
8. Some People Suffer From A Syndrome Where They Are Obsessed With Fine Dining
It is well understood that there is a plethora of conditions, syndromes and diseases that humans suffer from and sometimes it is difficult to understand them.
This particular syndrome is called gourmand syndrome and it is triggered when a person sustains an injury to the right anterior cerebral hemisphere of the brain. The person who suffers from it will want to eat fine cuisine for the rest of his life and will be obsessed with fine food.
9. Your Stomach Acid Might Make A Hole In Your Skin
Our bodies are so awesome that the list of amazing things they are capable of is endless. For example, people’s stomachs vary a lot in acidity from person to person, but often the acidity is incredibly potent.
The hydrochloric acid that our bodies produce is strong enough to break down food, but in many cases it is also strong enough to burn the skin to the point of leaving a hole in it.
10. By Putting Your Thumb In Front Of Your Mouth And Blowing On It, You Can Reduce Your Stress
Stress is one of the plagues of our modern society. Many of us suffer from it and it is sometimes very difficult to get rid of it. This is a trick that may seem strange to you, but you can try to blow on your thumb to reduce your stress.
This mechanism works because you actually cool your thumb and it calms your heart rate.
11. There are more germs and bacteria in your mouth than there are people living on earth.
There are billions and billions of bacteria present all over the world and it is difficult to estimate exactly how many. One of the places where they feel best is the human body which provides them with a warm and humid environment which they love.
Scientists have found that 615 different types of bacteria can be found in our bodies and in our mouths in particular. They are sometimes billions.
13. If All Your Blood Vessels Were Put End To End, They Would Be Twice That Of The Earth.
Our body contains an incredible number of blood vessels. There are veins, arteries, capillaries and many more. They are actually all around our organs and bowels. There is not a centimeter of our body that does not contain it.
If we put them all end to end, our blood vessels would stretch over a distance of between 95,000 and 160,000 km.
There are a lot of things that make up our body weight obviously, but it’s surprising to learn that our skin makes up 16% of our total weight. In an average adult body, this means that she weighs an average of 9 kilos.
If we could remove all of our skin and spread it on the ground, it would cover more than 2 square meters.
Moths live in all places of the world, but they were not thought to live in human eyelashes. It makes it uncomfortable just to think about it and as if that weren’t enough, they love to live anywhere humans have hair or body hair.
This specific species of moth that lives in our eyelashes is called demodex. They are said to be responsible for a lot of our skin problems!
18. The Human Skeleton Regenerates Itself Every Ten Years
We all know that the bones of the human body regenerate quite easily in the event of a fracture, for example. This is because in reality they are constantly regenerating themselves so that we have a mixture of young and old bones in our body at times.
This process never stops, even with age, the process slows down just a little bit as we approach death.
19. Our Heart Is Powerful Enough To Protect Blood From 9 Meters Away
This is another fascinating fact about our body and it concerns our heart in particular. Our heart is one of the most powerful organs in our body. It serves as a pump for our entire blood system and has to withstand tremendous pressure.
This pressure is such that our heart has the ability to send a squirt of blood across a room.
22. Your Kidneys Filter Your Blood About 25 Times A Day
The kidneys are very powerful organs and they have such an important role for our body. The kidneys filter our blood about 25 times a day. This means that around 180 liters of blood are processed per day.
This filtration is crucial is essential for the blood to remain blood and for our body to function properly. A normal human body has around seven to eight liters of blood.
23. There Is A Specific Type Of Tumor That Grows Only On The Hair And Teeth
As if there wasn’t enough pain and trouble in the world, there is one particular tumor that grows only in people’s teeth or hair. Tumors are associated with the skin or other organs, but a cyst, the teratoma, is found in these unusual parts of the body.
The teratoma grows around the hair, teeth, bones and can be removed with a simple operation.
25. When You Go To Bed At Night, You Are Smaller Than In The Morning
It’s amazing, but your height is bigger when you wake up in the morning. As the day goes on, your spine becomes more and more compressed. The kind of gelatin located between our discs serves as a little cushion when the column settles.
When we sleep, it all moves and relaxes and we wake up taller in the morning.
27. After the Age of 30, You Lose Approximately 1.2cm Every Ten Years
That explains a lot of things. You might have wondered why older people look smaller in real life than in pictures of them young and here is the explanation. People get older and over time they get smaller.
The discs between our vertebrae tend to flatten over time, but at such a slow rate that we can hardly notice it.
Crazy knowing that our heartbeats can sync with our favorite song? Of course, it depends on the beat and tempo of the song of course, but your heart is able to slow down or speed up depending on the music.
Specifically the songs that go crescendos. Blood vessels constrict around the cardiovascular system.
29. After 60 Years, You Can Lose Up to 50% Of Taste
It’s really disappointing to learn that when we get older and reach the age of 60, half of our taste buds will start to disappear. Humans start life with 10,000 taste buds, but with age things start to get sour.
In fact, taste buds start to change after just ten days.
32. Humans are in fact made up of stardust dating back several billion years.
Over 97% of the atoms in a human body are the same in number as found in the Milky Way. Because of the supernovas, the stars eventually explode, and the stardust eventually becomes plants and one day, living things.
This means that about 97% of our bodies are stardust. It is hardly believable. The most skeptical will find it hard to swallow it, but scientists have confirmed it more than once.
Here’s another fact that sounds a lot like a lie, but it’s the truth: humans can glow in the dark. Apparently the human body is capable of bioluminescence. In other words, they can emit light in the dark.
The light is simply too dim for the human eye to see. Other species like fireflies and jellyfish have the same capacity, but at higher intensity than us.
35. Most People In The 1940s Dreamed In Black And White
It makes sense when you think about it actually. According to them, three-quarters of Americans in the 1940s did not dream in color. It is believed to be because they were exposed to the black and white movies and television of the time.
Nowadays, the number of people who say they dream in black and white is much lower.
36. Our Mouth Produces Between One To Two Liters Of Saliva Every Day
It’s not very tasty, but our mouths produce enough saliva every day to fill at least one bottle of water. A person’s salivary glands can be activated just by thinking about food, which further increases the production of saliva.
Likewise, when we eat, the glands are working even harder than usual.
37. Our Body Triggers An “Immersion Reflex” When You Are Underwater
Our bodies are able to do amazing things automatically. One of these is called the “submersion reflex” which is triggered when we are underwater. In fact, the body shuts down certain systems in particular to conserve as much energy as possible for later.
There are also psychological changes that take place when we are submerged which makes researchers think humans had aquatic life in the past.
38. If You Decide To Twist All Your DNA, It Would Be Long Enough To Pass Through The Solar System More Than Once
DNA is a molecule present in all living beings which houses all the information and characteristics of it, even the smallest. It is made up of long coils that are linked to each other and carry the genetic instructions for the functioning, development, reproduction and growth of each organism.
If it could be untwisted, DNA would stretch a round trip distance from Earth to Pluto.
Apparently, the cornea of the eye is the only part of the human body that does not receive blood. Why, then ? Because she just doesn’t need it. It is the only organ that functions all our life like this.
The organ finds its oxygen in tears and nutrients in the aqueous humor of the anterior chamber behind it.
44. A Human Fetus Develops Its Fingerprints After Three Months
One of the most interesting things to discover during pregnancy is to follow the different stages of the development of the fetus. After 17 weeks of pregnancy, the fingerprints of the fetus are formed.
From that moment on, they will never change again until that person dies. Each person has unique fingerprints.
45. A Quarter Of The Bones In Our Body Are In Our Foot
In every human foot and ankle, there is a mind-boggling total of 26 bones. It is hardly believable. These small parts of our body are also home to 33 joints and nearly 100 tendons, ligaments and muscles.
It’s one of the most complex parts of our skeleton and if you think about it, maybe that’s why they have so many injuries.
48. If You Are Starving, Your Brain May Start To Eat On Itself
There is so much that can happen to our body when it is deprived of food and especially to the brain. When the brain realizes that its body is starving, it can begin to consume itself in order to survive.
This happens when you are starving, but also in people who are on too draconian diets. The scientific term is called autophagy.
49. Your Brain Can Survive Five To Ten Minutes Without Oxygen
We all know that our brain is one of the most powerful organs in our brain, but did you know that it can survive without any oxygen for five to ten minutes?
In other words, a man will pass out after a minute or two without oxygen, but his brain will continue to function for a few more minutes after that. Even if your heart stops, your brain will continue to live for a few more minutes.
53. If We Could Lay A Human Brain Fully Flat, It Could Fully Cover A Pillow An
It’s pretty nasty to imagine, but the point is that our extended brains would be about the size of a pillow.
A human head is quite small, and the brain takes up the largest space in it, even bigger than people imagine. To understand how the brain actually size, one would have to be able to lay it out entirely on a flat surface.
Our fingerprints aren’t the only completely unique things about our bodies. It seems that our languages are also unique.
The possibility of taking people’s tongue prints someday is pretty low, but it’s still incredibly cool to know. To really realize this, it would be necessary to be able to make a 3D image of the language on the other hand.
As noted earlier, adults blink about ten times per minute. Babies, on the other hand, blink much less than we do. They only blink once or twice a minute and very rarely close their eyes when they are awake.
This is because we blink to keep our eyes well lubricated, but babies don’t need as much lubrication as adults.
59. Each Human Body Has About 1.3-2.3 Kilograms Of Bacteria
Here we are again on the subject of bacteria. It’s safe to say that human bodies are huge receptacles for bacteria, even if you don’t notice them. According to scientists, an average human body is home to between 1.3 and 2.3 kilograms of bacteria at all times.
Bacteria make up roughly one to two percent of our total body weight.
60. The Highest Temperature Ever Recorded Was 46 °
It’s hard to imagine a person having a temperature of 46 ° C, but it is indeed the highest temperature of a man ever measured. Besides, the person who reached this temperature survived!
So that we realize the situation, remember that the normal temperature of a man is 37 °. One should be concerned if the temperature rises above 38 ° and in most people the organs start to suffer from insufficiency from 41.5 °.