February 18, 2020: Melanoma cases in the United States increased 2% annually between 2005 and 2015, and are likely to increase from 96,000 cases in 2019 to 151,000 cases in 2030 if the trend continues, according to a new study.
The researchers noted that most cases of melanoma, the deadliest type of skin cancer, in the United States are related to exposure to ultraviolet radiation by "excessive sun exposure and indoor tanning." CNN reported.
UV exposure accounted for 91% of all cases of melanoma diagnosed in the United States between 2011 and 2015, and 94% of cases of melanoma occurred in non-Hispanic whites, according to the study.
"The high prevalence of indoor tanning among teenage girls in the late 1990s is probably a contributing factor" to the increase in the number of melanoma cases, said study author Dr. Farhad Islami, a cancer epidemiologist of the American Cancer Society, CNN reported.
The states with the highest incidence rates attributable to UV rays among all residents were: Utah, 36.3 cases per 100,000; Vermont, 31.1 per 100,000; Delaware, 28.2 per 100,000; Minnesota, 27.6 per 100,000; New Hampshire, 27.2 per 100,000; Oregon, 25.5 per 100,000; Idaho, 25.4 per 100,000; Georgia, 24.2 per 100,000; Washington, 23.9 per 100,000; Montana, 23.9 per 100,000.
"These variations probably reflect a combination of state differences in the intensity of UV solar radiation, regular or intermittent participation in outdoor activities [even intermittent sun exposure increases melanoma risk], sun protection, indoor tanning and early detection activities, "the authors wrote, CNN reported.