A few months ago, I was diagnosed with prostate cancer. (Early stage, no metastasis.) My boss pointed out that the radioactive tracer FDG (fluorodeoxyglucose) is used to detect cancer cells because glucose derivatives are consumed more rapidly by cancer cells than by healthy cells. He suggested a low-sugar diet. My GP suggested teh same thing, but to lower my triglycerides and A1C. When I asked my radiation oncologist about it, he said that some cancers might have a positive response to a low-carb diet, it doesn't really apply to prostate cancer. He pointed out that, just like other cells, when glucose is unavailable cancer cells will eat whatever nutrients ARE around. I will be undergoing radiation treatments shortly, and, ironically, in order to avoid gas production which could interfere with the targeting, I'm now essentially on a high-carb, low-fiber diet. Mashed potatoes, pancakes, and oatmeal are fine, salads and uncooked vegetables are not. Also, because the radiation may affect my urethra, acids and spicy items are no-nos (so no orange juice or coffee in the morning). About the only things that are both low-carb and low-gas are grilled meats and fish.
One thing that really DOES promote prostate cancer, unfortunately, is testosterone, so I've been on a testosterone blocker for a couple of months now. My PSA has dropped to 1.1, which indicates that the cancer isn't growing. The bad news is that I'll have to remain on the blocker for up to two years after the radiation treatments.
The good news is that my oncologist is quite sanguine about my chances for eliminating the cancer.
George