A great example of research being taken out of context. Look up the research- much of noise about vitamin D deficiency it is based on populations from Sweden and Denmark, high-latitude countries where vitamin D deficiency is going to be a widespread problem. Very different from the US and even much of Europe.
A quick look at the comparison between sun exposure and melanoma survival is interesting though. Still, NOT developing melanomas in the first place would be much more important. Anyone got any links to research showing an inverse correlation between high UV exposure and melanomas?