Senescence is the biological process of aging, characterized by a gradual decline in physiological function and increased vulnerability to disease and death. It is a complex and multifaceted phenomenon that is influenced by a combination of genetic, environmental, and lifestyle factors. Research in the field of senescence focuses on understanding the underlying mechanisms of aging, identifying risk factors for age-related diseases, and developing interventions to promote healthy aging and extend lifespan. This area of research has implications for a wide range of fields, including medicine, biology, and public health.