Everybody is born with cancer cells in there body... not the disease just cells. When they start multiplying is when they become deadly. And the smoke from MJ is 4 times as deadly as a cigarette... why nobody has died yet.... idk??? But im a 4.2 student... you can learn this in a 5th grade health class. And Datamatrix... before you say it is a stupid statement please look it up. If im wrong ill give you an OZ of weed but im not wrong.