1. I quote the medical text "Ultra violet light ( mainly from Sun) is the most important and commonest cause of skin cancer."
2. Surah Alkafiroon verse 6 has stated my answer. Bro Sadiq has reminded me of my mistake and apologize for being critical of your Diety.
Say: “O Disbelievers! I shall not worship that which you worship. Nor will you ever worship that which I worship. Nor did I worship that which you worshipped. Nor did you ever worship that which I have been worshipping. (1-5)
To you your religion and to me mine. (6)