Why do people always say that I m black, I don t understand, and I m sad

You have your reasons, others have other people's reasons.

Han Tonglin, a researcher at the Institute of Geology of the Chinese Academy of Geological Sciences, believes that skin color is the protective color of human beings, and the different skin colors of different races are the result of human beings being in different regions for a long time.

He told reporters that in order to survive and develop in the natural world, human beings have a "special" for self-protection, that is, protective color. Different environments result in different skin tones. This unique environment is the result of the development of a pan-large ice sheet about three million years ago.

At that time, about 3 4 of the world's land mass was covered with a white expanse of snow and ice, and the ice sheet was more than a kilometer or two thick.

For a long time, many researchers believe that in East Asia, especially in the Loess Plateau in North China and Northwest China, when the pan-large ice sheet was formed, an arid climate was formed here. In the scorching loess environment, in order to survive, human beings gradually have a yellow protective color, that is, yellow skin color.

The Caucasian race is distributed in the northern European zone of the Mediterranean, which is just in the middle of the great ice sheet, and the Mediterranean Sea blocks their migration path, so human beings cannot continue to migrate south, so they live in the ice and snow for a long time, and it is difficult to reproduce. In order to adapt to the changing environment, their complexion also begins to turn whiter.

Black people are concentrated in tropical rainforests near the equator. In the rainforest, dimly lit, venomous snakes and beasts are frequented, and in order to seek their own development, they have formed black ** and strong limbs. This is good for climbing and running.

As for the brown people in Australia, it is due to the fact that during the period of the Panglacial Sheet, the surrounding mountains were covered with snow and ice, and the arid climate caused the widespread red iron ore in the basin to eventually form a red desert zone.

So, are differences in racial skin color related to DNA variation? Han Tonglin disagrees with this view. He believes that although there are some differences in skin color and morphology, there are no clear boundaries, but rather gradual transitions due to environmental reasons.

People of different skin colors should be biologically of the same race, i.e., of the same ancestor.

Wait! I'll get you the information.

Whether white is white or not depends mainly on the ability of melanocytes to synthesize melanin. Between the cells of the human epidermis, melanocytes are distributed, and the tyrosine amidine contained in it can oxidize tyrosine into polysaccharides, and then go through a series of metabolic processes in the middle to finally produce melanin. The more melanin is produced, the darker it is; On the contrary, the clearer it is.

Also, the most important thing to watch out for is sunlight. We know that sunlight can make ** dark, after going out, ** will become dark, whether it is cloudy or rainy, it will make ** black after a long time outside (in the open air), or because there are ultraviolet rays in the sun. On cloudy or rainy days, although the sunlight is blocked by the delayer, the ultraviolet rays are damaged by the A-segment (long-wave) line, so you should take protective measures when going out, such as wearing a hat, holding an umbrella, wearing sunglasses, or applying sunscreen.

There are many factors that will cause you to be black all the time, such as genetic factors, which you can't change, and acquired factors, such as your weak ability to carry the sun, even if you rarely bask in the sun, it will still turn dark! There are also your low levels of melatonin, and some are caused by some daily routines!

What is black afraid of. Black is the manifestation of Jiankang, as long as you are kind-hearted and loving, you can get all kinds of nutrients by eating vegetables and fruits. It has nothing to do with black, it may be genetic, these are not important, the important thing is that Jiankang is OK.

I'm sure you didn't inherently be black when you asked. There are many reasons to go dark. Please refer to the following points for analysis.

1 Ultraviolet burns Melanin.

2. Wind and sun exposure (if you live near a lake or a river, it is easy to be blown black, because the skin is weaker in front of these two).

3 Health problems lead to symptoms such as dull skin, spots, and yellowing (such as endocrine disorders, uneven life conditioning, anemia, etc.) Sometimes when you look at **, it is not dark, but just dull and yellow, so try to remedy it. For example, conditioning physiology, adjusting diet, etc., can improve this symptom. I hope you are beautiful and healthy

Then you have a black complexion, black looks healthy, and some people also have genetic problems with their parents, black is black! As long as it's healthy.

Genes are hard to change.

My cousin is very dark, and she has been like this since she was a child. Even if the people in the family don't pay attention to skin care every day, they won't be black like that, not to mention that she is a little girl who stays at home every day and doesn't bask in the sun, but she just can't cover it.

The complexion of black spots looks healthy, especially for boys, it is not good to be too white, white people are generally afraid of heat, and it is easy to be red when it is hot, and black spots are not visible. So skin color is not a big problem, health is good.

The main thing is genetics, which you can't change if you want to, and then the face is always sunburned, there is a lot of melanin, the metabolism is slow, and then there is irregular work and rest, etc......

What's so bad about black? Black is a healthy complexion, and black spots are more masculine. If Bai looks frail and sickly, he doesn't have a man's masculinity!

Genetically inherited, some people are born black. Some people are born white. You see Liu Yifei is very white.

Exceptionally beautiful. Jike Junyi's complexion is black. No way.

But they're all excellent. If you want to make yourself white. Can be used within skincare products.

But I feel like it's all on the outside, as long as you're good enough. Let the rest take its course. Don't push yourself.

It's good to protect more in the future.

Do a good job of sun protection, reasonable work and rest routine.

Skin tone is related to diet, drink more milk and rice, eat more fruits and vegetables, skin tone should improve.

Gene. My brother is like this, you have this kind of thing in your bones, it's not up to you, but when you grow up, you show it. Hydrate yourself with plenty of milk. Wash your hands often, touch the water when you have nothing to do, and you can also steam it, which may be a little better.

Don't always play with your mobile phone, drink plenty of water and milk, eat more fruits and vegetables, and take a milk bath often.

Don't stay up late, it should be too much melanin production, and it is also possible that the hidden gene is activated, so it is revealed, see if there is something black in your family, maybe it is genetic inheritance.

This is the innate gene, inherited from the parents, it doesn't matter if it's black or not, as long as it's healthy.

Genetics or possibly**sun exposure is prone to darkening of the skin.

Some people are born with ** dark, as long as they are healthy.

Didn't find the right reference!! Come, let's compare, and you'll be white.

As long as you're healthy, it's okay to be dark.