Might it be that a a lack of vitamins contribute to cancer?

Your question has: Lingered because no one wants to offendhomeopathic folks and physicians who hold to the vitamin theory of illness, but if there is contribution, it is small. Linus pauling advised high doses of vitamin c, which is water soluble and cannot hurt. The risk is with fat soluble vitamins a, d, e & k. One trial tested retinoic acid in removed lung cancer, and the outlook was worse with the vit a/retinoid.