Government nutrition researcher [Dr. Mark Levine] has published new evidence that suggests vitamin C can work like chemotherapy - only better. But so far, he hasn't been able to interest cancer experts in conducting the kind of conclusive studies that, one way or the other, would advance treatment. If vitamin C is useful in cancer treatment, that's wonderful. If it's not, or if it's harmful, that's fine, too," said Levine, a Harvard-educated physician at the National Institute of Diabetes and Digestive and Kidney Diseases. The distinction between oral and intravenous is crucial. The body automatically gets rid of extra C through urine. Levine's lab has shown that, at high concentrations, the vitamin is toxic to many types of cancer cells in lab dishes. But to get that much C into the body before it's eliminated, it must be put directly into the blood. Five out of nine types of cancer cells that were put in simulated body-cavity fluid died when concentrated ascorbate or peroxide was added to the dish. And the best part: This same lethal marinade had no effect on healthy cells. "Interest is definitely growing," said Kenneth Bock, physician and president of the American College for Advancement in Medicine, an alternative-medicine society that teaches ascorbate infusion protocols. The American Cancer Society and the American Association of Clinical Oncologists warn patients against high-dose C, as do leading cancer centers such as the University of Pennsylvania's and Memorial Sloan-Kettering.