It's a difficult and very scientific book, but it goes out to make a point much unknown in the current world. Once you see the evidence, you realize the cause of cancer is very unlikely to be genetics (the current mainstream dogma), but rather metabolism.

Cancer is very dependent on one's metabolism and way of eating, and this should be used as the first step of any prevention or treatment, and definitely used in conjunction with all compatible conventional treatments. The effectiveness has been demonstrated. Why is it not done worldwide?