Findings from W.B. Grant et al in cancer reported.

According to a study from the United States, "Long-term smoking appears to be inversely correlated with development of melanoma. Chronic ultraviolet (UV) irradiance also reduces and/or delays the development of melanoma."

"Thus, a common process is indicated. To examine the link between smoking and melanoma, articles reporting the relation between incidence of lung cancer and melanoma for individuals were sought. A very strong inverse correlation (r=-0.96) was found between the standardized incidence ratios for lung cancer and melanoma, passing through the value of I for each with a slope of -0.74. Smoking increases skin aging or elastosis in a manner similar to that …