Quality of life refers to an individual’s overall well-being, encompassing physical, psychological, and social aspects of health. In medical contexts, it is used to evaluate how a disease, treatment, or condition affects a person’s daily functioning, comfort, and emotional state. Quality of life assessments help guide treatment decisions, especially in chronic or serious illnesses, by considering factors such as pain levels, mobility, mental health, and the ability to perform everyday activities. It is a key measure in patient-centered care and clinical outcomes.