Originally Posted by
badoc
That's a really interesting post. Thanks.
My understanding though is that skin cancers like melanoma are far more genetically determined than simple UV exposure, as migrants inherit their background risk, not the risk of the county they migrate to. SCC's and BCC's on the other hand (much more common and arguably easier to treat) are very closely related to UV exposure, explained in part due to the preponderance of them found on the head, neck, face and hands.
Your partly right, BCC/SCC are more common and UV exposure is their major risk factor. With MM, which has a greater mortality rate, has other risk factors such as pale skin, but UV exposure is still a major risk factor as demonstrated by the rising rates (when genetics hasn't changed), although there is some debate about the degree to which UV is a factor.
For those interested,
here is the World' Health Organization summary information.