I don't at all. I believe you get skin cancer by already having a faulty immune system and then getting ionizing radiation on top of it that causes cellular oncogene transcription. Take a look at this very recent study out of Australia. It's in Neurology.2011:76;540-549. February 8 2011. Direct sun exposure and high levels of vitamin D REDUCE the risk of MS.....great news for us docs that use D and the sun to heal patients