Journal
INTERNATIONAL JOURNAL OF CANCER
Volume 143, Issue 6, Pages 1305-1314Publisher
WILEY
DOI: 10.1002/ijc.31527
Keywords
cancer incidence; melanoma; global; UV radiation; population attributable fraction
Categories
Funding
- National Health and Medical Research Council of Australia [APP1058522]
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Ultraviolet radiation (UVR) is a strong and ubiquitous risk factor for cutaneous melanoma, emitted naturally by the sun but also artificial sources. To shed light on the potential impact of interventions seeking to reduce exposure to UVR in both high and low risk populations, we quantified the number of cutaneous melanomas attributable to UVR worldwide. Population attributable fractions and numbers of new melanoma cases in adults due to ambient UVR were calculated by age and sex for 153 countries by comparing the current melanoma burden with historical data, i.e., the melanoma burden observed in a population with minimal exposure to UVR. Secondary analyses were performed using contemporary melanoma incidence rates in dark-skinned African populations with low UVR susceptibility as reference. Globally, an estimated 168,000 new melanoma cases were attributable to excess UVR in 2012, corresponding to 75.7% of all new melanoma cases and 1.2% of all new cancer cases. This burden was concentrated in very highly developed countries with 149,000 attributable cases and was most pronounced in Oceania, where 96% of all melanomas (representing 9.3% of the total cancer burden) were attributable to excess UVR. There would be approximately 151,000 fewer melanoma cases worldwide were incidence rates in every population equivalent to those observed in selected low-risk (dark-skinned, heavily pigmented) reference populations. These findings underline the need for public health action, an increasing awareness of melanoma and its risk factors, and the need to promote changes in behavior that decrease sun exposure at all ages.
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