Introduction
As we grow older, the human body undergoes many natural changes. One of the most important is the change that affects the immune system. These changes may make older adults more vulnerable to infections, less responsive to vaccines, and more likely to develop chronic conditions such as diabetes, heart disease, and even certain types of cancer.
What is "Immunosenescence"?
Doctors call this phenomenon immunosenescence, which refers to the gradual decline in the efficiency of the immune system with age
 Some immune cells (such as T cells) decrease in number.
 The response against bacteria and viruses becomes slower and weaker.
 The body produces fewer strong antibodies after vaccination.
Health Consequences of These Changes
1. Infections: The risk of illnesses such as pneumonia and influenza increases in older adults.
2. Vaccines: Vaccine effectiveness may be lower compared to younger people, which is why older adults sometimes need booster doses or specially designed vaccines.
3. Chronic diseases: A weaker immune system increases the likelihood of conditions such as heart disease and cancer.
How to Keep the Immune System Strong with Age
Healthy diet: Eat vegetables, fruits, lean protein, and limit processed foods.
Physical activity: Engage in regular exercise such as walking or swimming.
Adequate sleep: Good sleep helps renew immune cells.
Vaccinations: Stay up to date with influenza, COVID-19, and pneumonia vaccines as recommended by a physician.