Health

Defined negatively, health is the absence of illness, functionally, as the ability to cope with everyday activities, or positively, as fitness and well-being.

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In any organism, health is a form of homeostasis. This is a state of balance, with inputs and outputs of energy and matter in equilibrium (allowing for growth). Health also implies good prospects for continued survival. In sentient creatures such as humans, health is a broader concept.

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The World Health Organization defines health as "a state of complete physical, mental and social well-being, and does not consist only of the absence of disease or infirmity." Using the WHO definition classifies 70-95% of people as unhealthy. A deeper inquiry into the definition of "health" reveals that what makes a cell healthy is unique from what makes an organism healthy. Similarly, what makes an organism healthy is unique from what makes a population healthy. To illustrate this point, consider that Japan has the greatest life expectancy of any nation (2004 UN Human Development Report), despite having one of the highest smoking rates, especially among men (2004 UN Human Development Report).

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The most solid aspects of wellness that fit firmly in the realm of medicine are the environmental health, nutrition, disease prevention, and public health matters that can be investigated and assist in measuring well-being.

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Organism: In biology and ecology, an organism (in Greek organon = instrument) is an assembly of organs that influence each other in such a way that they function as a more or less stable whole and have properties of life....

Homeostasis: Homeostasis or homoeostasis is the property of an open system, especially living organisms, to regulate its internal environment so as to maintain a stable condition, by means of multiple dynamic equilibrium adjustments controlled by interrelated regulation mechanisms....

Energy: Energy is a fundamental quantity that every physical system possesses. Energy of physical system in a certain given state is defined as the amount of work W needed to change the state of the system from some initial state (called reference state or reference level) to the given state....

Health related Images and Photos (experimental)

Health Energy Potion	National Health, The (1973)	Mental Health Disorders Mood Swings Depression	Health to the Bride Published 1933
For Health and Good Cooking Carried Unanimously	Health Community at the Karlsbader Fountain 1810	Failure of National Health Insurance DVD	Drinking Their Health
Stripping Poisonous Wall Papers Dangers to Health: A Pictorial Guide to Domestic Sanitary Effects	90-Day Fitness Challenge : A Proven Program for Better Health and Lasting Weight Loss (Paperback)	Drink More Milk for Your Health	90-Day Fitness Challenge A Proven Program for Better Health and Lasting Weight Loss (Book)