This document discusses frailty and its impact on treatment outcomes. It begins by defining frailty as a lack of physiological reserve to withstand stressor events, and describes common frailty manifestations like falls and delirium. It notes that frailty can help predict short-term outcomes for COVID-19 patients and is associated with higher mortality and institutional discharge from critical care. However, it also acknowledges limitations in assessing frailty and cautions against rationing care solely based on frailty scores, given frailty is influenced by socioeconomic factors. The document concludes that frailty assessments can guide shared decision-making if used appropriately, but have the potential to reinforce inequality if not considered holistically.