Just going by the recommended limitation I see in Block's Life over Cancer. And the fact that advanced glioma and hormone refractory prostate cancer patients have had documented improvements on
carbohydrate restricted diets. Seems to be something to it. I wouldn't think sweet potatoes would be advisable either. Maybe not so bad if strategically combined with foods that counteract/prevent the glycemic boost and resultant insulin release. The noted monotherapy benefit of
Metformin in triple negative makes me think that without Her2, ER or Pr, the cancer relies more heavily on glycolysis/glucose...maybe explaining the increased benefit in that group. Cancer stem cells are thought to be hypoxic and more reliant on glycolysis too...again offering a partial explanation of Metformin's benefit there. Perhaps some limitation, strategic combining and use of intelligent supplementation might make the most sense once dealing with active cancer.
Eh...food for thought.