If you have a big forehead, you are smart? Is there any scientific basis for these superstitions?

Do you have such people around you? They check their horoscopes every day, every week, and every month, trying to "avoid bad luck and seek good fortune"; mirrors in the bedroom cannot be placed like this; the head of the bed cannot face west... People usually think that the reason for superstition is insufficient education and lack of scientific literacy, so they believe in pseudo-scientific phenomena. Today, let's talk about several common superstitions and whether they have any scientific basis!

Left eye twitching means good fortune, right eye twitching means disaster?

The repetitive, involuntary twitching of your eyelids is called eyelid twitching, and it can be caused by one of three things: being tired, being stressed, or consuming too much caffeine. Occasional eyelid twitching is normal, painless, harmless, and usually goes away on its own.

Image source: pexels

But whether it is the left or right eyelid, if it twitches for several days, weeks, or even longer, it may be a "bad omen". It indicates that you may have eye-related diseases, such as eyelid inflammation, dry eyes, facial nerve or other nerve abnormalities. At this time, it is recommended not to seek help from a fortune teller, but to go directly to the "ophthalmology" or "neurology" department.

Apricots are prosperous in the house, but people are not.

The almonds on the tree at home have produced fruits. We can’t not eat them, right? After eating the flesh, the almonds can’t be wasted, right?

However, if you only eat 20 to 30 bitter almonds, your family will indeed be less prosperous. The amygdalin in 100g of bitter almonds can decompose and release 100 to 250mg of hydrocyanic acid (60mg of hydrocyanic acid can be lethal).

Image source: Pixabay

Most people in rural areas don’t know this, especially some children. Adults may have life experience, but children are completely unaware of this and may be poisoned by eating too many apricots when they are ripe.

Don't plant "ghost clapping" in your yard

The so-called "ghost clapping hands" is the poplar tree, also known as the clapping hands. When the wind blows at night, the wind blows the leaves of the poplar tree, making a rustling sound, which makes people feel fearful and covers up other sounds outside, such as some bad sounds such as thieves.

Also, what is that rustling sound? It's noise! ​​The hazards of noise:

Damage to hearing

Research shows

Noise can cause noise-induced hearing loss

(Photo source: 39 Health Network)

In a moving vehicle (including the subway)

The ambient noise is as high as 80-90 decibels

·Affects sleep

Finally I feel sleepy

The result was also disturbed by noise

No one can be happy

Can't sleep

The mind will be tense and the breathing will be rapid.

Even the pulse beats faster

If this continues for a long time, you will suffer from neurasthenia.

High noise levels are defined as sounds above 65 decibels, with a passing diesel truck producing about 85 decibels and a motorcycle about 100 decibels. The researchers studied 23,000 residents aged 18 to 70 in central Amsterdam over a four-year period, measuring noise levels around the clock and asking volunteers to complete questionnaires multiple times to detect signs of depression.

The results showed that people who were regularly exposed to noise above 70 decibels had a 65% higher risk of depression than those who were only exposed to 45-54 decibels. The findings were published in the International Journal of Environmental Research and Public Health.

People with big foreheads are smarter

There is a saying that IQ is positively correlated to a child's total brain capacity to a certain extent, and a large brain capacity is linked to the size of the head. So it seems that praising people with big foreheads for being smart does make sense.

Image source: Pixabay

But! Brain capacity is not only determined by the size of the head, just like rich people need bigger wallets, but people with big wallets are not necessarily rich.

By the way, people with a high hairline will also have a bigger forehead.

Source: Chongqing Tianji Network Co., Ltd.

This article is compiled from Tencent Medical Dictionary, 39 Health Network, Curious Doctor, and the Internet

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