When aged, people become more and more inferior in resistance to various diseases, more vulnerable to influenza, pneumonia, heart hemal diseases, brain hemal diseases and tumorous diseases.
When aged, people become more and more inferior in resistance to various diseases, more vulnerable to influenza, pneumonia, heart hemal diseases, brain hemal diseases and tumorous diseases.
老年人对多种疾病抵抗力差，很容易患感冒、肺炎、心血管病、脑血管病、癌症等。