Why are so many people afraid of dark?

Experts say that people develop fear of the dark because of evolution.

Through evolution, the trend of fear of darkness gradually formed.

In prehistoric times, our ancestors were at high risk of being attacked by predators or predators at night. Therefore, through evolution, the trend of fear of darkness gradually formed .

Also, in the dark we can't see everything clearly, this creates anxiety that makes us imagine the worst results possible. So, we are not afraid of the dark but are afraid of things that lurk in there.

Besides, when we see other people afraid of something or being told about a scary thing, we tend to accept those things as scary. So if we had been warned by our parents about the darkness or watched a horror movie where the ghost appeared from the night, the brain would remember, think about it and start to fear the dark.