A great video of Dr. Eugene Fine discussing the insulin and cancer connection. Another from Ancestral Health Symposium 2012 (AHS12).
Eugene Fine, M.D.—Dietary Insulin Inhibition as a Metabolic Therapy in Advanced Cancer (AHS12) from Ancestral Health Society on Vimeo.
Your video of Dr Fine describing his treatment of terminal cancer patients with an insulin- restricting diet (aka a ketogenic diet) is right on, except that the diet should be started the day the cancer is discovered, not after it is terminal. Cancer cells do prefer glucose as an energy source, so anything that can be done to deprive them of energy can only retard their progress.
The penchant for glucose makes cancer cells even more vulnerable to destruction by vitamin C (ascorbic acid). In brief, when ascorbic acid enters the oxidizing environment of a cancer cell, it is oxidized to dehydroascorbic acid. Because of structural similarity between dehydroascorbic acid and glucose, cancer cells cannot distinguish between them. Thus, when dehydroascorbic acid is present in high concentrations it competes effectively with glucose for active transport into cancer cells by glucose pumps. Once inside, dehydroascorbic acid generates large amounts of hydrogen peroxide that the cancer cells cannot counter (cancer cells lack catalase). The very high levels of hydrogen peroxide cause either apoptosis or necrosis of cancer cells. (Normal cells are not affected – they do not oxidize vitamin C and they kill peroxide with catalase.)
A great discussion of the defenses and weaknesses of cancer cells can be found in Cancer: Nutrition and Survival, 2005, by Steve Hickey and Hilary Roberts.