According to the Revici Method sugar is anabolic. If your cancer is due to an anabolic environment (similar to acidic) in your body then sugar is not suitable. However if your body is catabolic (similar to alkaline) then sugar is fine because it acts to counteract the catabolic state.
Sugar for Chemo-Induced Hiccups
Please be careful with sugar, cancer loves sugar, I read it's like throwing gas on a fire.