Immune aging is a research area that explores the changes that occur in the immune system as individuals age. The immune system plays a vital role in protecting the body from infections and diseases, but as people grow older, they may experience a decline in immune function, leading to increased susceptibility to infections, autoimmune diseases, and certain types of cancer. Researchers in the field of immune aging study how the aging process affects different aspects of the immune system, such as the production of immune cells, the response to vaccines, and the ability to remember past infections. Understanding immune aging can help in developing strategies to boost immune function in older adults and improve their overall health and well-being.