Authoritative Scale for Sub-health Assessment of the World Health Organization
With the development of medicine, the meaning of health has risen to the definition of World Health Organization (WHO) in 1984: health is not only a state without disease and weakness, but a complete state of physical, psychological and social adaptability. This narrows the extension of the original concept of health. In view of this concept, buchman, a scholar in the former Soviet Union, put forward the concept of "the third state" (between the "first state" of health and the "second state" of disease) through relevant research, and Chinese scholars named it sub-health. Sub-health means that although there is no definite disease diagnosis, the body shows increased fatigue and decreased vitality and adaptability. Sub-health means that people's body and mind are between disease and health.