Cancer is by far more serious disease to rely on
juice protocols, herbs/supplements ONLY.
On the other hand, fasting and juice can seriously help unblock your own energy sources and make cancer presence
much more difficult.
The easiest way to make cancer uncomfortable is to raise general Yang in body, as main cancer's energy is Yin=Cold, by switching to 70% Yang meals, the list of them in Macrobiotic books.
In fact, one doesn't need to follow the macrobiotics cooking,
simple choice of products is quite enough, though in very serious cases the full Macrobiotic approach will additionally help.