CA Cancer J Clin. 1993 Sep-Oct;43(5):309-19. doi: 10.3322/canjclin.43.5.309.
Although dietary measures may be helpful in preventing certain cancers, there is no scientific evidence that any nutritionally related regimen is appropriate as a primary treatment for cancer. This paper focuses on seven questionable modalities: vitamin C, pau d'arco tea, the Gerson diet, Hoxsey herbal therapy, the macrobiotic diet, Manner metabolic therapy, and Kelley metabolic therapy. Some of these approaches involve a diet that is nutritionally inadequate. Some involve potentially toxic doses of vitamins and/or other substances. Some are quite expensive. All pose the risk that patients who use them will abandon effective treatment. The American Cancer Society therefore recommends that "nutritional cancer cures" be avoided.
尽管饮食措施可能有助于预防某些癌症，但没有科学证据表明任何与营养相关的养生法适合作为癌症的主要治疗方法。本文重点关注七种有问题的方法：维生素C、托芳茶、格森疗法、霍克西草药疗法、生机饮食法、曼纳代谢疗法和凯利代谢疗法。其中一些方法涉及营养不足的饮食。一些涉及潜在有毒剂量的维生素和/或其他物质。一些费用相当昂贵。所有这些都存在使用它们的患者会放弃有效治疗的风险。因此，美国癌症协会建议避免“营养抗癌疗法”。
