May 4, 2025
Science

Why did our skin color evolve as black and white, instead of a single color? It’s because of something we’re exposed to now!

  • July 25, 2024
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The evolution of skin color to dark and light; as a result of environmental, genetic and adaptive factors popped up. Especially those who have been exposed during the

The evolution of skin color to dark and light; as a result of environmental, genetic and adaptive factors popped up.

Especially those who have been exposed during the evolutionary process UV rays and vitamin D play a serious role. Let us explain how.

Sunlight has an effect.

UV rays in particular play a major role in the evolution of our skin color. Ultraviolet, Promotes the production of vitamin D (It is worth remembering that overexposure also has harmful effects.).

“So what does vitamin D have to do with skin color?” If you say; Dark skin color arose because people in tropical and equatorial regions were exposed to more UV radiation high melanin (Prevents skin cancer through DNA damage) and protects against ultraviolet.

As we move to higher latitudes where sunlight is less, DNA synthesis becomes difficult and skin color becomes lighter with less melanin It increases vitamin D production.

So the first people in Africa were black.

Our earliest ancestors in Africa had dark/black skin because they were more exposed to UV radiation due to the region they lived in. Of course they did not stay fixed in one region to latitudes where there is less sunlight They began to disperse.

When people with this black skin color left Africa and migrated to different parts of the world, genetic diversification to adapt to different climatic conditions happened.

A white/light skin emerged.

Compared to their previous generations, especially those that spread and settled in areas with less sunlight They started getting lighter skin tones.

Moreover, skin color is different in some societies. Because he is a cultural figure, he can influence sexual selection. In this way, a certain skin color is more common in a population.

Sources: NCBI, Penn State University

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