"Fasting for two days protects healthy cells against chemotherapy, according to a study appearing online the week of Mar. 31 in PNAS Early Edition. Mice given a high dose of chemotherapy after fasting continued to thrive. The same dose killed half the normally fed mice and caused lasting weight and energy loss in the survivors." http://www.physorg.com/news126202490.html
OK, only a mouse study, but it is consistent with the idea that cancer seems to get an inordinate survival benefit from high blood glucose levels, and is more sensitive to the action of insuling and insulin like growth factor than are normal tissues. If this is one of the cancer cell's main competitive advantages, we may be 'evening the playing field' such that our normal cells can out duel the cancer.
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