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So help me out here:  If IV vitamin C has been shown to prolong time to cancer relapse, aid in reducing tumor size, improve survival with chemotherapy, improve quality of life, improve physical function, reduce chemo side effects, improve energy, reduce nausea, aid insomnia, reduce constipation, and improve depression in cancer patient--then why does the author say that IV vitamin C is contentious?  Add that IV vitamin C has not been implicated in any deaths in cancer therapy.  Contrast that with chemotherapy.  Why again is this contentious?  Whom is best served by this being contentious?