Cancer will ferment carbon, cutting off one food source isn't going to kill it. You're going to harm yourself in the long term if you're not getting all proper nutrition. Dr. Robert Cathcart and Linus Pauling are two people that can help you. There are other options available if push comes to shove. edit: I should state that cutting out simple carbs is important is keeping the cancer down. But trying to starve it will force it into survival mode and it will spread.