41+ Absolutely Amazing Brain Facts [2021 Update]

1. There’s 25% cholesterol in the brain.

(Aha)

When the doctor tells you to lower down your cholesterol, shock them with some facts about the human brain. 25% of the entire body cholesterol is located in the brain. Without it, the brain cells would die.

2. The brain of a 2-year-old is already 80% developed.

(Washington.edu)

There’s a reason why babies have such disproportionate heads compared to their bodies. The infant brain development facts show that it grows at a tremendous rate. By the age of two, it is almost fully grown.

3. Brain information’s speed is 268 miles per hour.

(Stanford)

Even though we can’t see it, scientists could measure it. One of the amazing facts about the brain is that the information travels within it at 268 miles per hour. It takes some time for the brain to send signals to your feet. 

For example, the speed of a standard jetliner in the sky is 560 mph. These facts about the brain and the nervous system tell us that it may not be the speed of light, but luckily for us, the feet are pretty close to our brain.

4. Our brain produces around 50,000 thoughts a day.

(PsychologyToday)

People are overthinking sometimes. In today’s episode of  “Interesting facts about psychology and the brain” – the brain produces 50.000 thoughts a day. People suffering from stress and anxiety have even more. 

5. Modern technology makes the human brain evolve.

(NCBI)

We like to say that we are multitasking but this is just brain myths and facts. The brain is not capable of doing two things at once. What it does is switching from one to the other very fast. It looks like multitasking to us, but facts about your brain say the opposite. So, with each generation, the brain gets smarter and more competent.

6. We use a full 100% of our brains.

(Hub) 

That fact that we use only 10% of our brains?

A lie. 

Medical facts about the brain show that we use all of it and even when we sleep, we use most of it.

7. The brain’s memory is like constructing a puzzle.

(ScienceDirect)

Every memory we produce is being stored somewhere in our brain. The human brain facts on memory say that when we need them at a certain moment, the brain pulls them from different places. Then, it makes a puzzle to create the whole picture.

8.The brain is soft and squishy.

(Smithsonian)

Another one of the cool facts about the brain – it is soft and can be pressed with a finger. Since there are no bones or anything hard, touching it can deform the brain.

9. Brains can’t feel pain.

(Brainline)

Even though it processes all feelings including pain, you won’t feel any if someone hits your brain with a stick. The interesting facts about the brain say that there are no receptors and because of this, the brain can’t feel pain. 

That’s why brain surgery facts say that operations can be done without any anesthesia. The center of the pain and the feeling of touch is in the brain stem. However, touching the stem is not going to do anything special. 

The facts about the brain stem point out that nerves take the information into it, but get no information out of it. So you won’t feel anything by touching your brain.

10. The brain is made of 73% water.

(NCBI)

A lot of people are not aware of this but it’s one of the most interesting facts about the human brain. Just 2% of its dehydration can lead to problems with memory, functioning, etc.

11. Our brain has 86 billion brain cells.

(Nature)

No one can count them precisely, of course, but the brain cells facts so far tell us that we have almost 100 billion of them. This means each of our brains is a mini power plant able to produce around 20 watts of energy.

12. Just 5 minutes without oxygen makes the brain severely damaged.

(MedlinePlus)

A lot of facts about brain injury point out that serious damage can occur because the brain was cut off from oxygen for just a few minutes. The brain, even though it takes only 2% of the entire body mass, uses around 20% of the total oxygen intake.

13. The brain keeps developing until the age of 25.

(University of Rochester)

The teenage brain development facts conclude that young people exiting puberty don’t yet have completely developed brains. This process ends at the age of 25. The teenage brain facts say that teens’ brains develop at the rate of 90% to 95% but it’s not complete yet.

14. Men’s brains are 10% bigger than women’s.

(PsychologyToday)

Sure, this doesn’t mean men are smarter. But the male brain vs female brain facts give men a slight advantage when it comes to this. It may be sexist, but this is a medical fact.

15. Constant stress makes your brain smaller.

(Yale)

Yale’s research about anxiety and the brain revealed facts that are not exactly good. Depression and chronic anxiety apparently make the brain smaller.

16. The left vs. right hemisphere theory is completely false.

(BeBrainFit)

You’ve probably heard about the theory that people are either left or right-brained. The latest human brain facts say that this is completely false. The latest MRI scans and research show that for people to do anything, the whole brain must be involved. 

17. The brain never stops developing in certain segments, brain facts say.

(Plos)

Even though we said the age of 25 is the end of brain development, this is not completely true.  This is only about physical growth. When it comes to inner development, the aging brain facts say that some parts grow old very fast and others climax at a very late age. Moreover, vocabulary skills improvement ends at around the age of 70.

18. The brain has 125-150ml of liquid around it at all times.

(Deranged Physiology)

To protect itself, the brain has created and maintains cerebrospinal fluid (CSF). Brain injury facts claim that lots of more serious injuries were avoided because of it. Humans normally have 125-150ml of CSF. About 20-24ml of it is produced per hour.

19. The brain is a master of prediction.

(Cambridge)

Long-time ago, the brain had to adapt to the surroundings and protect itself from predators. Today, as one of the most amazing facts about the human brain is that we can use this skill to read sentences even if the letters are not in the right order. According to these cool brain facts, the brain sees the word as a whole and doesn’t pay too much attention to letters. 

20. There’s a special barrier that protects the brain from viruses coming through the blood.

(NCBI)

There’s a liter of blood going through the brain every minute, facts about the brain show. This amount of blood might get all kinds of stuff into the bloodstream. In order to avoid problems, it invented a barrier that stops unwanted stuff from getting into the brain.

However, the brain health facts explain that this barrier isn’t on top of its game every time. So actually lots of things can impact the brain through the blood.

21. Every brain cell needs constant fueling with glucose.

(PennState)

Brain cells’ fuel is glucose. They need constant feeding with it according to the facts about the brain cell. If for any reason this stops, the liver comes to the rescue. It breaks down the body fat to offer a substitute food for them until the real deal comes back.

22. There are 700,000 Americans with brain tumors. 

(BrainTumor)

At this moment, the brain tumor facts say that there are around 700,000 people living with tumors in the USA.

23. Every year around 87,000 Americans are diagnosed with a brain tumor.

(BrainTumor)

Facts about brain cancer tell us that each year the rate of people being diagnosed with a brain tumor is enormous. Almost 90,000 thousand new brain tumor patients will get into the disease’s statistics next year.

24. More than 50,000 people die because of brain injuries every year.

(CDC)

The traumatic brain injury facts say that yearly in the US there are over 2.5 million patients looking for help because of TBI. In 2014, 56.800 people died because of it.

25. Around 6.5 million people in the States have brain aneurysms.

(Bafound)

The most common reason for brain stroke is aneurysm. The brain aneurysm facts say that every 50th person has an unruptured aneurysm that may cause severe damage at any moment.

26. 30,000 people experience aneurysm rupture every year.

(Bafound)

The brain aneurysm statistics and facts show that this is one of the most serious brain problems. In the USA every 18 minutes someone suffers from it.

27. Gamma brain waves are the reason you’re capable of learning.

(MindValley)

Gamma brain waves’ facts aren’t quite as popular as they should be if you ask us. These waves are being produced in the thalamus and go from the back of the brain to the front. The brain’s frontal lobe can go back and forward up to 40 times per second.

The gamma waves are associated with many important cognitive skills, like emotions, language, sexual behavior and so on. Some interesting facts about the brain and learning show that the faster these waves move, the higher the ability to learn people have.

28. Good music nurtures the brain.

(Soulful Soundwaves)

All facts about how music affects the brain shows us that it’s good in every sense. Music helps the brain produce dopamine, endorphins, and reduces the level of cortisol.

Dopamine makes us feel happy, endorphine creates a feeling of euphoria, and cortisol is responsible for stress. These facts about music and the brain should be just enough to convince you to turn up the volume.

29. 90 minutes of sweating makes the brain temporarily age for a year.

(Daily Mail)

This is one of the fun facts about the brain. It turns out that exercise and heavy sweating for 90 minutes makes our brain shrink as it would if it worked for a year.

What a great excuse to skip gym today! 

30. Exercise is the best food for the brain.

(BrainHQ)

About the connection between brain and exercise – facts say is the best one you can build for helping your brain. By exercising, your heart rate becomes faster and it pumps more blood. That way more oxygen is delivered to the brain. The exercise and the brain facts show us that this is the best way to “feed” your brain and keep it healthy.