Other Free Encyclopedias » 21st Century Webster's Family Encyclopedia » 21st Century Webster's Family Encyclopedia - Haeckel, Ernst von to Health Insurance, National


Health, according to the World Health Organization, “a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity.”

The practices that help a person to maintain health —including proper nutrition, exercise, and cleanliness— are called hygiene.

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