Measuring the health status of a population is also straightforward and involves no more than counting individuals who, on examination, show definite signs of disease and comparing their numbers with those who do not. The WHO defines health as a state of "complete physical, mental and social well-being and not merely the absence of disease or infirmity". In my view, they need to consider how each of us, their patients and consumers, define health and find ways to help us achieve it. The World Health Organisation (WHO) defines health as "a state of complete mental, physical and social well-being and not merely the absence of disease or infirmity".
The third definition states that health is a state of equilibrium, a balance that an individual has established within himself and between himself and his social and physical environment. Both definitions would lead to recommendations for improved treatment of disease and the elimination of risk factors that can cause disease, such as sedentary lifestyles, smoking, poor dietary habits and insufficient application of hygienic measures such as washing hands before eating. The World Health Organisation (WHO) defines health as "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity". Illness should always be taken seriously, but it is not always the defining feature of a person's overall health.
In 1984, the WHO revised the definition of health and defined it as the extent to which an individual or group is able to realise their aspirations and meet their needs, as well as to change or cope with their environment. Some of these individuals will also escape the second type of definition of health because they function as well as expected in their age and sex group in the general population. It is more difficult to define mental health than physical health because many psychological diagnoses depend on the individual's perception of their experience. A definition of "complete health as the absence of illness leaves little room for people with chronic illnesses and for managing them in new ways".