Definition of health
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Evolving Definitions of Health: WHO, Medical, and Holistic Perspectives
The definition of health has changed over time and is still debated today. The World Health Organization (WHO) famously defined health as “a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity”Segre1997Segre1997Sowjanya2016+1 MORE. This definition is holistic, including not just the absence of illness but also overall well-being in several areas of lifeSowjanya2016Schramme2023. However, many experts criticize this definition for being unrealistic, as it suggests a state of “perfection” that is rarely attainableSegre1997Segre1997Schramme2023.
Criticisms and Limitations of Traditional Definitions
Several researchers argue that the WHO definition is outdated and too idealistic, as it does not account for the realities of chronic illness, aging, or individual differences in well-beingLeonardi2018Segre1997Segre1997+2 MORE. Critics also point out that the focus on “complete” well-being can be misinterpreted as requiring perfect health, which is not practical for most peopleSegre1997Segre1997Schramme2023. Additionally, some argue that health should not be defined only by external, objective measures, but should also consider subjective experiences and personal realitiesSegre1997Segre1997.
Alternative Approaches: Absence of Disease, Adaptation, and Well-Being
There are two main strategies for defining health. The first is the “oppositional” approach, which sees health as simply the absence of disease or illnessDugdale2020Brüssow2013Larson1999. This is the traditional medical model, which is still widely used in clinical practiceBrüssow2013Larson1999. The second is the “displacement” approach, which shifts the focus to related ideas like wellness, well-being, and quality of lifeDugdale2020Sowjanya2016Larson1999.
More recent definitions emphasize the ability to adapt and self-manage in the face of physical, social, and emotional challengesBrüssow2013Godlee2011. This view sees health as a dynamic process, not a fixed state, and highlights resilience and the capacity to cope with changeBrüssow2013Godlee2011. Some models also include environmental, emotional, spiritual, and social factors as important parts of healthSowjanya2016Larson1999.
Pluralism and Contextual Definitions
Many experts now believe that there is no single “best” definition of health. Instead, different definitions may be more useful in different contexts, such as clinical care, public health, or policy-makingLeonardi2018Larson1999. A pluralistic approach allows for multiple definitions that can be adapted to specific needs and populationsLeonardi2018Larson1999. For example, health for older adults or people with chronic conditions may focus more on functional ability and quality of life than on complete well-being.
Biological and Organizational Features of Health
Some researchers propose defining health by looking at the body’s ability to maintain balance (homeostasis), respond to stress, and repair itselfLópez-Otín2020Sowjanya2016. Health, in this sense, is about the body’s organizational and dynamic features that keep it functioning properly. Disruptions in these features can lead to disease or loss of health.
Conclusion
In summary, the definition of health has moved from a simple absence of disease to a more complex, holistic, and dynamic concept. While the WHO’s definition remains influential, it is widely debated and often seen as too idealistic. Newer approaches focus on adaptation, resilience, and the integration of physical, mental, social, and environmental factors. There is growing agreement that health should be defined in ways that are flexible and context-specific, reflecting the diverse needs and experiences of individuals and populationsLeonardi2018Dugdale2020Segre1997+7 MORE.
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