Light skin african american men naked

Most skin cancers are associated with ultraviolet UV radiation from the sun or tanning beds, and many people of color are less susceptible to UV damage thanks to the greater amounts of melanin the protective pigment that gives skin and eyes their color darker skin produces. Previous research on skin-color genes fit that picture. New or existing moles brown, pink, black, red, or flesh-colored spots that are asymmetric, have an irregular border, change in color, are larger than a pencil eraser, or change in any way may indicate melanoma. Perez is director of cosmetic dermatology at St. Researchers agree that our early australopithecine ancestors in Africa probably had light skin beneath hairy pelts. Such spots could signify ALM.

Previous research on skin-color genes fit that picture.

New gene variants reveal the evolution of human skin color

Science 21 December VolIssue Tropical Slice Personal Blog. The team proposes that the variants arose in Africa as early as 1 million years ago and spread later to Europeans and Asians. By Meredith Wadman Dec. Then, when humans migrated out of Africa and headed to the far north, they evolved lighter skin as an adaptation to limited sunlight. Most skin cancers are associated with ultraviolet UV radiation from the sun or tanning beds, and many people of color are less susceptible to UV damage thanks to the greater amounts of melanin the protective pigment that gives skin and eyes their color darker skin produces.