Jan 3, 2024 · Variations in human skin color are adaptive traits that correlate closely with geography and the sun’s ultraviolet (UV) radiation. As early humans moved into hot, open environments in search of …

Differences in skin color among individuals is caused by variation in pigmentation, which is largely the result of genetics (inherited from one's biological parents), and in adults in particular, due to exposure …

6 days ago · Describes the geographic distribution, physiology, and evolution of human skin color

In this review, we discuss what is currently known about the genetics of skin color variation. We enumerated several cases of skin color adaptation in global modern humans and archaic hominins, …

There are many possible causes of skin discoloration, though, from a sunburn to an infection. Changes may also happen during pregnancy or by an underlying health condition that needs medical attention.

Oct 23, 2025 · Skin damage from acne, blisters, cuts, sun exposure, genetic factors, and autoimmune conditions are all possible causes for changes in melanin and, thus, skin pigmentation. This article …

Jun 1, 2024 · Human skin contains a diverse range of pigments, primarily melanin (eumelanin and pheomelanin) and carotene. Melanin serves as the primary determinant of skin color, while its …

In The Biology of Skin Color, Penn State University anthropologist Dr. Nina Jablonski walks us through the evidence that the different shades of human skin color are evolutionary adaptations to the …

Colour differences are due solely to the amount of melanin produced and the nature of the pigment granules. When the skin becomes tanned on exposure to sunlight, the melanocytes do not increase …

Aug 5, 2021 · This current review aimed to assess the influence of skin color variations in skin structure and functions as well as difference in dermatological disease patterns.