In this essay various definitions of health will explained ,the value of epidemiological studies and causes of illness will be evaluated.
One can define health negatively, as the absence of illness ,or positively as fitness and well-being. Health also implies good prospects for continued survival. According to the World Health Organization ,health is a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.
The definition of health varies in various institutes such as the National Wellness institute which defines health as an active process of becoming aware of and making choices toward a more successful existence. Whereas for the Alliance Institute for integrative Medicine views health as much more than just a state of physical health but also encompasses emotional stability, clear thinking, the ability to love,create,embrace change, exercise intuition and experience a continuing sense of spirituality.
According to the Arizon State University (ASU) ,health is an active ,lifelong process of becoming aware of choices and making decisions toward a more balanced and fulfilling life while Webster's 1913 Dictionary of Health defines it as a state of being hale,sound,or whole in body,mind,or soul; especially ,the state being of being free from physical disease or pain.
In conclusion, in the new global health policy, the role of WHO is made explicit. WHO, as a representative body of its 191 Members States throughout the world, recognizes that it has a unique mandate and responsibility to guide all partners involved in global governance of health towards the attainment of health for all. lt will do so by promoting international collective action that benefits all countries, and by responding to global threats to health. Furthermore, it will provide technical cooperation to support health development in countries and to protect the health of vulnerable and poor communities and