癌症又称为恶性肿瘤,其发病机理多样而复杂,既受外界环境因素(如环境污染、化学污染、电离辐射等)影响,又有人体自身内在因素(如人体免疫功能下降、精神状态、心理压力等)的作用。癌症的发病率呈逐年上升的趋势,日益引起全世界医 Cancer is also called malignant tumor. Its pathogenesis is diverse and complex. It is affected not only by external environmental factors (such as environmental pollution, chemical pollution, ionizing radiation, etc.), but also by the body’s own internal factors (such as the decline of human immune function, mental state, and psychology. The role of stress, etc.) The incidence of cancer is increasing year by year and increasingly causes worldwide