Tweedyshaw, I am so sorry to hear that.

I am at great risk for breast cancer and I've been researching it for some time now, I really don't want to die at 46 like my mother did. A quick summary of what I've read goes like this: sugar feeds cancer, yes, but giving a cancer patient a high sugar diet so as to avoid or delay wasting by cachexia is just the wrong way to do it since the cancer feeds not only on sugar but also needs fats and proteins to build new cancer cells, eventually depriving the healthy cells of protein and fat and resulting in cachexia. Furthermore, most [healthy] cells in your body don't need carbs for energy, cancer cells do. If fat is the primary energy source the healthy cells will have what they need to work and cancer cells will be starved.
Many good wishes to you and your DH.