1.放疗与营养的关系放疗是使用X射线、γ射线和电子射线的能量来杀死或损伤肿瘤细胞,是治疗恶性肿瘤的主要手段之一。据统计,有65%~75%的恶性肿瘤患者在整个病程中会接受放射治疗。接受放疗前,放疗医师会仔细准确定位肿瘤所在位置,但即使这样,肿瘤周围的一些正常细胞仍会不可避免地被锁定在放疗区域内,导致一系列不良反应。放疗患者饮食相关不良反应的严重程度取 1. The relationship between radiotherapy and nutrition Radiotherapy is the use of X-ray, γ-ray and electron beam energy to kill or damage tumor cells, is one of the main means of treatment of malignant tumors. According to statistics, 65% to 75% of patients with malignant tumors will receive radiation therapy throughout the course of their illness. Before receiving the radiotherapy, the radiologist will carefully and precisely locate the tumor, but even so, some normal cells around the tumor will still be inevitably locked in the radiotherapy area, resulting in a series of adverse reactions. Radiotherapy patients with diet-related adverse reactions take the severity