Cellular senescence is a process in which cells stop dividing and enter a state of permanent growth arrest. This phenomenon plays a crucial role in aging and age-related diseases, as well as in normal development and tissue repair. Senescent cells secrete a variety of inflammatory molecules and growth factors, which can have both beneficial and detrimental effects on surrounding tissues. Research in this area focuses on understanding the molecular mechanisms underlying cellular senescence, as well as its impact on aging and disease processes. Scientists are also exploring potential therapeutic strategies to target and eliminate senescent cells, in order to promote healthy aging and alleviate age-related diseases.