营养和癌症可在不同环节上互相作用。癌本身对营养有极大影响。肿瘤组织通常比正常组织能更有效地耐受营养缺乏。营养在癌的治疗中颇为重要。有几种食物的摄入与癌的发生有关。例如,脂肪过多、纤维过少的食谱与高危地区结肠癌的发生有关。脂肪摄入量增加曾被认为与乳腺癌及前列腺癌的发生有关。食品中的硝酸盐及其转化物亚硝酸盐被认为与胃癌发生有关。经流行病学和实验证明,某些微量元素和维生素的缺乏与某些癌症有关联。这些特定食 Nutrition and cancer can interact at different stages. Cancer itself has a great impact on nutrition. Tumor tissues are generally more tolerant to nutritional deficiencies than normal tissues. Nutrition is important in the treatment of cancer. There are several kinds of food intake and cancer incidence. For example, too much fat, too little fiber diet and high-risk area of ​​colon cancer. Increased fat intake has been considered associated with the occurrence of breast cancer and prostate cancer. Nitrates in food and their nitrites are thought to be involved in gastric carcinogenesis. Epidemiology and experiments have shown that the lack of certain trace elements and vitamins associated with certain cancers. These specific foods