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This is an accepted version of this page This is the latest accepted revision, reviewed on 14 January 2025. "Skin pigmentation" redirects here. For animal skin pigmentation, see Biological pigment. Extended Coloured family from South Africa showing some spectrum of human skin coloration Human skin color ranges from the darkest brown to the lightest hues. Differences in skin color among ...
If your skin has had years of exposure to UV rays, it will produce melanin that’s clumped, or will make melanin in extra-high concentrations, according to Mayo Clinic — and this in turn ...
Skin cancer is the most commonly diagnosed form of cancer in humans. [11] [12] [13] There are three main types of skin cancers: basal-cell skin cancer (BCC), squamous-cell skin cancer (SCC) and melanoma. [1] The first two, along with a number of less common skin cancers, are known as nonmelanoma skin cancer (NMSC).
Basal-cell carcinoma (BCC), also known as basal-cell cancer, basalioma [7] or rodent ulcer, [8] is the most common type of skin cancer. [2] It often appears as a painless raised area of skin, which may be shiny with small blood vessels running over it. [1] It may also present as a raised area with ulceration. [1]
Because of this property, eumelanin is thought to protect skin cells from sunlight's Ultraviolet A (UVA) and Ultraviolet B (UVB) radiation damage, reducing the risk of skin tissue folate depletion, preventing premature skin aging and reducing the risks of sunburn and skin cancer. [50] Melanin inhibits UVB-powered vitamin D synthesis in the skin.
Melanoma is a type of skin cancer that is often caused by exposure to ultraviolet light, which can be found in sunlight as well as tanning lamps and beds, according to Mayo Clinic. Skin on the ...
Exposing the skin to light from UVB lamps is the most common treatment for vitiligo. The treatments can be done at home with a UVB lamp or in a clinic. The exposure time is managed so that the skin does not suffer overexposure. Treatment can take a few weeks if the spots are on the neck and face and if they existed not more than 3 years.
Many recent, large, well-conducted studies have shown no benefits in reducing fracture risk, cardiovascular disease, cancer prevention, or death from vitamin D supplementation,” Cutler said.