What is immunity?
Disease description:
Hello doctor, I recently went to the hospital for a checkup and was told by the doctor that my immunity is low. I've never heard of immunity before and would like to ask—what exactly is immunity?
Doctor's answer (1)
Dr. Liu Aihua
Immunity refers to the body's ability to defend against harmful agents such as bacteria, viruses, parasites, and tumor cells by mounting appropriate immune responses to protect itself from disease. Each person's immune system is unique, and immunity tends to decline with age. Reduced immunity may increase susceptibility to viral and bacterial infections, leading to illness. Immunity is a complex system influenced by both genetic factors and environmental conditions.
Normal immune function can effectively resist viral infections and thus help prevent the occurrence of infectious diseases. Therefore, maintaining strong immunity is crucial. Immunity can be enhanced through a balanced diet, regular physical activity, and sufficient sleep. Additionally, receiving vaccinations on a regular basis can further protect individuals from various diseases.
