World Health Organization (WHO) 1948
Health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.
Advantages: aim is high, ideal and innovative
Limitations: vague, excessively broad, not measurable and impractical
World Health Organization (WHO) Revised 1984
The extent to which an individual or group is able to realize aspirations and satisfy needs, and to change or cope with the environment.
Advantages: emphasized individualism, perceived health as an individual asset
Limitations: did not seem to be aware of the collective dimension, resulting in less attention paid to primary prevention programmes
The main challenge will be to carry out health care through collective efforts of the society.