Why do some people keep seeing blood fainting? This is an unexpected explanation from science!

Read it right away to see that this bloody phenomenon has appeared right from the age of . stone.

Not everyone of us is strong enough to witness violence, full of blood, even in movies or in real life.

And not many people just see the blood fainted.

About 3.5% of the world's population suffers from a syndrome of fear of blood damage.

It is estimated that about 3.5% of the world's population suffer from blood -injection (injury phobia) syndrome . This is a condition that causes the sufferer to have an excruciating fear with blood and other types of invasive action.

Worse, when these people are in extreme fear when they see blood, the vasovagal syncope (vasovagal syncope) is completely possible.

And this condition will cause them to lose consciousness temporarily due to sudden heart rate and blood pressure drop, when the vagus nerve is stimulated by the fear of blood.

There are many people who see blood fainting.

So why do humans encounter this irony?

According to a study from John Hopkins University, the syndrome of blood damage is the only obsession that causes a reduction in heart rate , instead of increasing as other forms of fear.

In addition, the researchers found that this fear came from the Middle Paleolithic when people were still in the hunting and gathering phase.

At this time, men are responsible for a series of heavy and dangerous jobs (such as hunting, fighting for territory). Therefore, they have a "stronger" mentality than women and children when they must see bloody scenes.

This fear originated in the old Middle Ages.

On the other hand, due to less collisions with violence, the defense mechanism when encountering the danger of these two objects will make their subconscious appear a new way of survival.

It's a fake death if you see any life-threatening situation, especially with regard to blood.

This pretense move causes the body to gradually form a subconscious reaction mechanism. Over time, although the threat of personal life is not as much as the past, some people still have this natural mechanism without knowing it.

Therefore, you should not worry too much when you yourself like "want to faint" when you see blood, because this is just a way of defending people from . stone .