Tewnty Year Incidence of Melanoma

Note the Red is highest incidence, Light blue is lowest, and white is inadequate data. The highest incidence of melanoma indicates some aspect of workspace, life style, or other environmental feature with a chronic exposure of a mutagen. This heterogeneity is the first clue for an investigation to identify the environmental hazard. Notice the "sunbelt" of cancer for whites. However, notice the highly localized sites for nonwhite femles in nothern Georgia and in northern Mississippi along the Mississippi River. If the cause was genetic diversity between males and females, or whites and nonwhites, the incidence would be uniform.