It’s not just the sun’s fault
Australasia has the world’s highest incidence of melanoma. This is attributed to the impact of high levels of solar radiation on a predominantly fair-skinned population of Anglo-Saxon origin.
This is supported by comparisons with similar populations who remained in the UK.
There is however abundant evidence that other factors also play a significant role. For example, many melanomas occur on non-sun-damaged skin, and persons with similar levels of sun-exposure have different incidences of melanoma.
The link between melanoma and some other malignancies (particularly breast cancer) cannot be explained by UV radiation.
In a recent study on 28,848 male healthcare professionals in the US, it was found that ever having used, or recent use of, sildenafil increased melanoma risk by a factor of 1.92 and 1.84 respectively. 1
The risk remained after adjusting for factors including erectile