Senescent cells are damaged or aging cells that have stopped dividing but remain metabolically active. They can accumulate in tissues over time, contributing to various age-related diseases and conditions. These cells often release harmful substances that can affect nearby healthy cells, leading to inflammation and tissue dysfunction. Research on senescent cells is important for understanding the aging process and developing potential therapies. Scientists are exploring ways to remove or rejuvenate these cells, which may help improve health and longevity. This area of study is linked to broader topics like aging, regenerative medicine, and cellular biology.