Quality of life, the diploma to which an character is healthful, comfortable, and able to participate in or enjoy life events. The term fine of lifestyles is inherently ambiguous, as it is able to refer each to the revel in a man or woman has of his or her very own life and to the living conditions in which individuals discover themselves. Hence, the pleasant of lifestyles is relatively subjective. Whereas one character may additionally outline best of life in keeping with wealth or pride with life, another individual may define it in terms of capabilities (e.G., having the ability to live a great life in phrases of emotional and physical well-being). A disabled man or woman may record a high first-rate of life, whereas a healthy man or woman who these days misplaced a job may record a low first-class of existence. Within the area of fitness care, excellent of life is considered as multidimensional, encompassing emotional, bodily, material, and social well-being. Academic interest in great of existence grew after World War II, whilst there was increasing recognition and recognition of social inequalities. This furnished the impetus for social indicators studies and finally for research on subjective health and satisfactory of existence. The patient’s view of his or her own fitness had long played a few position in scientific consultation; however, in terms of the health care literature, researchers did not start amassing and reporting such facts systematically until the 1960s. The time period is used in a wide range of contexts, which include the fields of international development, healthcare, and politics. Quality of lifestyles should no longer be careworn with the idea of widespread of residing, which is based totally mainly on income. Instead, wellknown signs of the satisfactory of existence include not only wealth and employment however also the constructed environment, bodily and mental fitness, education, undertaking and amusement time, and social belonging. According to ecological economist Robert Costanza: "While Quality of Life (QOL) has long been an explicit or implicit policy goal, good enough definition and measurement were elusive. Diverse "objective" and "subjective" signs across a range of disciplines and scales, and recent paintings on subjective well being (SWB) surveys and the psychology of happiness have spurred renewed interest." Also regularly associated are concepts consisting of freedom, human rights, and happiness. However, seeing that happiness is subjective and hard to degree, other measures are usually given priority. It has additionally been shown that happiness, as tons as it may be measured, does no longer necessarily growth correspondingly with the comfort that consequences from growing income. As a result, trendy of dwelling should not be taken to be a measure of happiness. Also occasionally considered related is the idea of human security, although the latter can be considered at a greater primary level and for all people.