癌症的流行病学、病因学及肿瘤生物学研究表明,80％以上患者的癌症是直接或间接地由环境和不良生活方式等因素引起的。因此,癌症也同其它疾病一样,可通过消除病因或阻断致癌途径及致癌过程来防止其发生或复发。 对于术后已控制或经足量放疗、化疗后癌细胞已失去繁殖能力的癌症患者,因其免疫力、抗癌体质等方 Epidemiology, etiology, and tumor biology studies of cancer have shown that more than 80% of patients’ cancers are directly or indirectly caused by factors such as the environment and unhealthy lifestyles. Therefore, cancer, like other diseases, can prevent its occurrence or recurrence by eliminating the causes or blocking carcinogenic and carcinogenic processes. For cancer patients whose cancer cells have lost their reproductive ability after they have been controlled or have undergone adequate radiation therapy and chemotherapy, because of their immunity, anti-cancer physique, etc.