Significant ultraviolet radiation damage to skin can still occur hours after its exposure to sunlight, scientific researchers have determined. Exposure to sunlight or tanning lamps can damage DNA in melanocytes, the cells that pigment skin by producing melanin which gives skin its color, and that damage can occur not just during exposure but after, according to a study in the latest edition of the journal Science, published Friday. Such DNA degradation is a major cause of skin cancer, the most common form of cancer in America. Until now, scientists believed melanin largely protects the skin by blocking the sun's ultraviolet rays.
via Health News Headlines - Yahoo News http://ift.tt/1EyG75V
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