Around the Niagara area, there are lots of ginseng farms. I spoke to a farmer who has north American Indian roots and claims his background is of herbalists - he says that Cancer is the revenge of animals.
I believe what he says has a lot of truth. Alas, I am a meat lover. I've been trying to eat less meat since, but it is darn difficult. Looking around, although not immune, vegetarians have far fewer cancer rates than meat eaters.