Africans developed dark skin over millions of years as an evolutionary adaptation to intense ultraviolet (UV) radiation near the equator. As early human ancestors lost their body hair to help with cooling, increased melanin production acted as natural sunscreen, protecting against skin damage and folate depletion, which is essential for reproduction.
The evolution of dark skin is believed to have begun around 1.2 million years ago, in light-skinned early hominid species after they moved from the equatorial rainforest to the sunny savannas.
Numerous communities of dark-skinned peoples are present in North Africa, some dating from prehistoric communities. Others descend from migrants via the historical trans-Saharan trade or, after the Arab invasions of North Africa in the 7th century, from slaves from the trans-Saharan slave trade in North Africa.
Theory held that darker skin had evolved in order to afford early humans—who had recently lost the cover of fur—a protection against skin cancer under the tropical sun.
Human skin color is determined by the composition, abundance and distribution of melanin pigments, which are biopolymers derived from tyrosine (29). Melanins come in multiple forms: black-brown eumelanin and yellow-red pheomelanin.
THE ORIGIN OF BLACK PEOPLE ACCORDING TO THE BIBLE!
Did all humans start as black?
Dark skin. All modern humans share a common ancestor who lived around 200,000 years ago in Africa. Comparisons between known skin pigmentation genes in chimpanzees and modern Africans show that dark skin evolved along with the loss of body hair about 1.2 million years ago and that this common ancestor had dark skin.
Skin barrier function is reportedly stronger in darker skin tones (the stratum corneum is the skin barrier). Asian skin is reported to have similarities with Caucasian skin in terms of water loss and has the weakest barrier function.
Humans living at latitudes far from the equator developed light skin in order to help absorb more vitamin D. People with light (type II) skin can produce previtamin D3 in their skin at rates 5–10 times faster than dark-skinned (type V) people.
Albinism is a rare genetic condition caused by mutations, or changes, of certain genes that affect the amount of melanin your body produces. Melanin controls the pigmentation (color) of your skin, eyes and hair. People with albinism have extremely pale skin, eyes and hair.
Surprisingly, the Oakhurst study found that the oldest genomes were genetically similar to the San and Khoekhoe groups living in the same region today, UCT said in a statement.
Within these limitations the great divisions of mankind inhabiting Africa, its " primary" races from the standpoint of the distinctness of each from the others and their importance, are as follows: (1) Hamites) (2) Semites (3) Negroes. these have a common origin. (4) Bushmen (4a) Hottentots (5) Negritos.
Around 160,000 years ago, early modern humans (Homo sapiens) in Africa displayed physical traits adapted to their environment. They likely had dark skin, providing natural protection against intense ultraviolet (UV) radiation.
The evidence makes it clear that the first Europeans were dark skinned. Olalde et al. (2014) provides conclusive genetic evidence that hunter gatherers in Mesolithic Europe were dark skinned or highly pigmented with light (blue) eyes.
A variant in another gene, SLC24A5, which is associated with lighter skin pigmentation, seemed to have been introduced from the Middle East into East Africa. In other genes linked with skin color, the researchers discovered that they play roles in albinism and melanoma risk.
There's no single "most attractive" eye color, as it's subjective, but surveys often rank green as highly attractive due to its rarity, while other studies favor blue or hazel, with preferences often shifting by gender or cultural ideals. Rarity, uniqueness (like green, gray, or amber), and personal associations (like eye color similar to parents, known as sexual imprinting) play significant roles in attraction, alongside the contrast with hair and skin tone.
🇸🇸 South Sudanese people are known for having some of the darkest skin tones in the world, a natural adaptation that offers powerful protection against the intense equatorial sun.
Green eyes are truly special — a rare result of low melanin and unique light scattering that give them their enchanting hues. Though genetically recessive to brown, the green eye colour carries its own fascinating inheritance story.
In general, the farther north you go, the lighter the skin of the indigenous peoples. The Inuit and Yupik are exceptions, they've retained their dark skin, despite getting hardly any sun at all, because they get all the vitamin D they need from their fish diet.
According to geneticist David Reich, blond hair has ancient roots in Asia. The derived allele responsible for blond hair in Europeans likely evolved first among the Ancient North Eurasians. The earliest known individual with this allele is a Siberian fossil from Afontova Gora, in south-central Siberia.
Concentrating on skin health to improve appearance, Europeans tend to start taking care of their skin early and to focus on products that maintain their skin barrier, such as gentle cleansers, hydrating moisturizers, and protective SPF.
In general, Caucasian skin develops wrinkles sooner than African American skin. Although this is true of most of the face, African Americans develop wrinkles around the eyes at about the same rate as Caucasians.
Anthropologist Joseph Deniker said in 1901 that the very hirsute peoples are the Ainus, Uyghurs, Iranians, Aboriginal Australians (Arnhem Land being less hairy), Toda, Dravidians and Melanesians, while the most glabrous peoples are the Indigenous Americans, Bushmen, and East Asians, who include Chinese, Koreans, ...
Caucasian skin tends to be lighter and thinner compared to East Asian skin. It also has fewer melanocytes, the cells responsible for producing melanin, which gives skin its color. As a result, Caucasian skin is more susceptible to sun damage and the formation of age spots, fine lines, and wrinkles.
