The cure, preventative & treatment to stop the malignant process that is crab cancer has been known & extraordinarily well-documented since the publishing in 1902 of Edinburgh University embryologist John Beard's "Trophoblastic Thesis on Cancer." There's one scurvy & there's one cure. Its cure is vitamin C. There's one pellagra & there's one cure. Its cure is vitamin B3 (niacin). There's one cancer & there's one cure. Its cure is vitamin B17 (amygdalin).