Campbell T Colin
Division of Nutritional Sciences, Cornell University, Ithaca, NY 14850, USA.
J Nat Sci. 2017 Oct;3(10).
Cancer is traditionally considered a genetic disease. It starts with a gene mutation, often caused by environmental carcinogens that are enzymatically activated to metabolites that covalently bind to DNA. If these now-damaged carcinogen-DNA adducts are not repaired before the cell replicates, they result in a mutation, which is inherited by daughter cells and their subsequent progeny. Still more mutations are added that are thought to advance cellular independence, metastasis, and drug resistance, among other characteristics typically observed for advanced cancer. The stages of initiation, promotion and progression of cancer by mutations infer irreversibility because back mutations are exceedingly rare. Thus, treatment protocols typically are designed to remove or kill cancer cells by surgery, chemotherapy, immunotherapy and/or radiotherapy. However, empirical evidence has existed to show a fundamentally different treatment option. For example, the promotion of cancer growth and development in laboratory animals initiated by a powerful mutagen/carcinogen can be repetitively turned on and off by non-mutagenic mechanisms, even completely, by modifying the consumption of protein at relevant levels of intake. Similar but less substantiated evidence also exists for other nutrients and other cancer types. This suggests that ultimate cancer development is primarily a nutrition-responsive disease rather than a genetic disease, with the understanding that nutrition is a comprehensive, wholistic biological effect that reflects the natural contents of nutrients and related substances in whole, intact food. This perspective sharply contrasts with the contemporary inference that nutrition is the summation of individual nutrients acting independently. The spelling of 'holism' with the 'w' is meant to emphasize the empirical basis for this function. The proposition that wholistic nutrition controls and even reverses disease development suggests that cancer may be treated by nutritional intervention.
传统上,癌症被认为是一种基因疾病。它始于基因突变,通常由环境致癌物引发,这些致癌物经酶激活后成为与DNA共价结合的代谢产物。如果这些已受损的致癌物 - DNA加合物在细胞复制前未得到修复,就会导致突变,该突变会被子细胞及其后代继承。随后还会出现更多突变,这些突变被认为会促进细胞自主性、转移和耐药性等晚期癌症常见的其他特征。突变引发癌症的起始、促进和进展阶段意味着不可逆性,因为回复突变极为罕见。因此,治疗方案通常旨在通过手术、化疗、免疫疗法和/或放疗来清除或杀死癌细胞。然而,已有经验证据表明存在一种截然不同的治疗选择。例如,在实验动物中,由强诱变剂/致癌物引发的癌症生长和发展可以通过非诱变机制反复开启和关闭,甚至通过在相关摄入水平上改变蛋白质摄入量完全逆转。对于其他营养素和其他癌症类型也存在类似但证据不太充分的情况。这表明癌症的最终发展主要是一种对营养有反应的疾病,而非基因疾病,要明白营养是一种全面、整体的生物学效应,反映了完整食物中营养素和相关物质的天然含量。这种观点与当代认为营养是独立作用的单一营养素总和的推断形成鲜明对比。“holism”(整体论)中“w”的拼写旨在强调这一功能的经验基础。整体营养控制甚至逆转疾病发展这一观点表明,癌症或许可以通过营养干预来治疗。