Vitamin C 'reduces benefits' of cancer drugs: study "The use of vitamin C supplements could have the potential to reduce the ability of patients to respond to therapy," said Mark Heaney, an Associate Attending Physician at Memorial Sloan-Kettering Cancer Center, and lead author of the study. Past studies have suggested vitamin C could be beneficial to cancer patients because it is an antioxidant. In August, a study showed that injected high does of vitamin C reduced the size of tumors and slowed cancerous growths by about 50 percent in laboratory mice. The new research shows that a number of chemotherapy drugs produce "oxygen free radicals." According to the study's theory, vitamin C could "sop up the radicals,"... ...
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